I acquired a 4-12x40 Leupold VX-R in 2015, and after determining the clicks were accurate and repeatable, decided that it was time I tested a CDS dial. Round Nose. How do I calculate the ballistic coefficient? Discussion in ' Rifles, Bullets, Barrels & Ballistics ' started by Troutslayer , May 13, 2005. Then you could divide that time into 1 ft and come up with the number of feet per second. Combining complete onsite environmental measurements with the precise trajectory solutions of the integrated Hornady 4DOF ® ballistics solver, this rugged all-in-one handheld unit delivers the convenience you want and the accuracy you need for long-range success under any conditions. ; The form factor is the ballistic coefficient divided by the sectional density (i=SD/BC), and is a measure of how closely the profile of the projectile matches the G1 standard projectile. 010 with a pointed pellet that has a ballistic coefficient of 0. Specifically, I assume there is a way to do it without a chronograph and come out. Help Support Long Range Hunting by donating:. It is of most significance on long shots taken directly due east or west. In the end, I had compiled the equations necessary to calculate the many forces acting upon airsoft BB's, coupled that with a little know-how and developed a program in MATLAB to ultimately calculate projectile trajectory. Accurate and easy ballistic calculator designed for the use with Swarovski Optik Distance Reticles or the Ballistic Turret. A round ball (a shot pellet) is unique among projectiles in that its ballistic characteristics are solely dependant upon its diameter and its weight. Thus, steel shot pellets of a particular size weigh less than lead pellets of the same size. Even the scope you use plays into the BC. While not having a high ballistic coefficient,(air drag) it sheds energy fast. Since then, there have been huge developments in two key areas:. Ballistic calculators are a must have for any competitive long-range shooter and a handy tool for anyone looking to make precision shots at the range! Get the right one and use it well and it can save you time, money, and make you a better shot!. A pellets ballistic coefficient is very important for determining a pellets trajectory, especially over a long distance. I could swer I stumbled over a chart listing pellet B. , solutions from the ballistics engine take inputs directly from the sensors so there is no need to adjust any settings in Weather Mode to get an accurate solution in Ballistics. There is a ton of misconceptions about what REALLY is the B. After testing nearly 25 pellets in my TF-89, I've settled on RWS Super H-points. Looking for ballistic coefficient? Find out information about ballistic coefficient. Enter the first two variables, then press calculate. Retained velocity at point of impact calculated from BC, range to target, and muzzle velocity. 257 and tried to find Ballistic Coefficient of the Arsenal 257420 FP and Boat Tail. Ballistic Coefficient The ballistic coefficient for the bullet being used. External Ballistics Calculator. Ballistic Coefficient. It is a great investment if you want to get into long range shooting and will be especially useful if you handload. Onboard sensors measure incline angle, compass heading, barometric pressure, and temperature. External ballistics - The behavior of a projectile in flight. "The AB Kestrel comes with numerous pre-loaded drag models, but not entire gun/ammo profiles. G1 and G7 are different models of drag functions that measure ballistic coefficient. Barnes Spit-Fire TMZ. Freeware small arms ballistic coefficient calculators. The problem is, all of the name brand phone calculators were developed for the Apple Iphone, which means if you are running the Android operating system from Google, you can’t use them. PMC Ammo Bronze - A versatile line of quality ammunition that offers a variety of bullet types and calibers. As a follow on from my Self Reliant Airgunning - Pellet Production post , I thought I'd show a quick method on how I've been calculating BC without getting too technical. NEW! Kestrel ® 5700 Ballistics Weather Meter with Hornady ® 4DOF ®. Rifle Air Rifle Ballistics 857 Fps 7. Large mass projectiles from howitzers and artillary must co-ordinate the earth's rotation and air density to get a "hit". BC is a function of mass, diameter, and drag coefficient. It is inversely proportional to the negative acceleration: a high number indicates a low negative acceleration—the drag on the body is small in proportion to its mass. I bought the Strelock Pro app last night and was busy setting up a variety of airgun/ammo/scope combinations. In another thread I mentioned that I had done some testing of pellets at various velocities to determine the Ballistics Coefficient What I found was quite interesting as it was NOT a constant but in fact a curve with a definite peak. Ballistics calculations and formulas for small arms. Ballistic calculators are a must have for any competitive long-range shooter and a handy tool for anyone looking to make precision shots at the range! Get the right one and use it well and it can save you time, money, and make you a better shot!. Combining complete onsite environmental measurements with the precise trajectory solutions of the integrated Hornady 4DOF ® ballistics solver, this rugged all-in-one handheld unit delivers the convenience you want and the accuracy you need for long-range success under any conditions. Some manufacturers calculate their BC using the ASM (Army Standard Metro) and others use the ICAO (International Civil Aviation Organization). ⭐️⭐️⭐️⭐️⭐️ If you searching to check Rifle Ballistic Calculator Rifle price. You can use the calculator below to calculate the amount of energy (and hence legality) of your air gun. In addition to graphs, the calculators provide data tables showing velocity, drop, energy and time for each distance within the total range. A ballistic coefficient is a number that rates how well a bullet slices through air. The Hornady 4DOF calculator provides trajectory solutions based on projectile drag coefficient (not ballistic coefficient) along with the exact physical modeling of the projectile and its mass and aerodynamic properties. 177 caliber pellets. Ballistics101. Many tests were performed from the 1870s through the 1930s to develop ballistic information used as industry standards for projectile testing. Tests on various types of pellets, under varying conditions. This is a powerful and flexible program, but the usual rule applies - garbage in, garbage out. The original Chairgun software (which we acquired) predated even this. Basically, the program can be used for paintball, regular 0. I might also note that the BC of the one standard AccuBond I've tested at longer ranges, the 140 6. Up until now I have shot both LV and HV with my Steyr LG110, using 4. Has anyone ever use a BB for such a distance, and is there a lot of drop off?. The H&N Online Ballistics and Pellet Selector is very easy to use. You can do your own experimental calculations using JBM Online Ballistics (free to use). You can think of it as a representation of how slippery the bullet is in flight or how good a particular bullet is at overcoming air resistance. To make a ballistic calculator work accurately, you start by building what is commonly called a profile. is a measurement (or prediction in a lot of cases) of how fast a bullet slows down in a given distance with a given velocity. Looking for ballistic coefficient? Find out information about ballistic coefficient. Share Thread. When it comes to ballistic coefficient (or BC), the higher the number, the better a bullet will resist drag and wind drift, giving you more consistent downrange accuracy. Not surprisingly, adding mass for a fixed frontal area and shape provide less drop. Your sight settings will be quite close, but you want to pay attention to the altitude and temperature of the range at which you will be shooting. Our projectile motion calculator is a tool that helps you analyze the parabolic projectile motion. Spire points or spitzer rounds pierce through the air better than round nose bullets and a bullet with a flat base generates much more drag than a bullet with a boat tail design. Useful for understanding how to apply physics equations to airsoft concepts. They are not the same thing. Useful for our background information. By Randy Wakeman. Their 4DOF calculator is more accurate, but it does have some caveats. Debates about ballistic coefficients, as you can see, are largely pointless, as all the noise is about a lousy 10 yards of MPBR with a 2000 fps load. There we used only wad cutters and rifles that fired at 1000+ fps. It is inversely proportional to the negative acceleration — a high number indicates a low negative acceleration. Simply enter the weight in grains (gr) of your pellet (you can check the list below if you're unsure) and the velocity in feet per second (fps) into the boxes below and then click the Calculate button. I could swer I stumbled over a chart listing pellet B. Characteristics: This pellets are the choice of ISSF World Champion 2010 -Italian shooter Niccolo Campriani. Enter the initial velocity. Once upon a time I did a simple math model with lead pellets using a fixed coefficient of drag and velocity then increased the mass. ; The form factor is the ballistic coefficient divided by the sectional density (i=SD/BC), and is a measure of how closely the profile of the projectile matches the G1 standard projectile. As many know, airgun pellet Ballistic Coefficients are a very complex subject. The rest is down then to the shooters own skill level. 62mm M80 Ball has a ballistic coefficient of approximately 0. One is the classical dynamics of Isaac Newton, another is the field of fluid dynamics, more specifically aerodynamics. interpolate the data). There are now a growing number of ballistics apps created specifically for shooters and hunters, and you don’t have to be a computer whiz to use them. This project compares ballistic coefficients advertised by four well-known bullet companies (Hornady, Nosler, Sierra, and Barnes) with those. ρ = density of fluid (1. They're basic and sometimes were only one shot through the chronograph. Buy Online with safety transaction. 020, the difference is only 0. While a pellets ballistic coefficient can change slightly depending on a speed of the pellet, here are the general ballistic coefficient figures for several popular. 22cal air rifle at ranges of 10, 20, 30 & 40 yards. PyramydAir Airgun Calculator. The relative efficiency of these shapes is distilled into a numeric value, its’ Ballistic Coefficient or BC. KECalc: An application to calculate Kinetic Energy at the muzzle and - given the appropriate Ballistic Coefficient and Drag Law - to estimate the velocity, kinetic energy, momentum and flight time at any point along the trajectory. Improving 6. Granted, the 7. In addition to graphs, the calculators provide data tables showing velocity, drop, energy and time for each distance within the total range. This number is inversely proportional to the drag effect on the body i. The colder the air, the more dense, the more drag! To cheat this resistance we modify the shape of the projectile. But what a lot do not know, is that those coefficients are not all created equal. Selection from the list of typical bullets. Calculating the coefficient of drag, Cd, is not too difficult. They are not the same thing. Pure ballistics data is to be found in most manuals, such as the Norma reloading manual. Now we’re ready to apply those terms. 's are crucial to getting good data from your exterior ballistics software. A good ballistic program should be able to use two velocities and the distance between them to calculate an exact ballistic coefficient for any of the common drag models. I am constantly asked where to get ballistic coefficient tables for various bullets. You'll notice that I've been using the term drag coefficient (Cd) rather than the commonly used ballistic coefficient (BC). A 10mph wind accounts for 5,969" / 165yards of movement assuming you've aimed at the correct direction and elevation. rimfire, shotgun, and handgun cartridges, bullet weights, and ballistic coefficients, including variations for sight-in. A ballistic coefficient is the measure of a bullet's relative ability to overcome air resistance. Ballistic Coefficient (Velocity) Calculate a ballistic coefficient from near velocity, far velocity and distance between velocity measurement points. You can use the calculator below to calculate the amount of energy (and hence legality) of your air gun. 45 cal 195 gr HP Copper Clad BC=. "Calculate accurate fire control solutions for long range rifle shooting. I used to know math, but have sort-a fallen off the bicycle some 30 years ago. Trajectory of Bullet fired at 20,000 feet. Chris, I shoot a number of different Money bullets, from BACO and Paul Jones. BUT you'll need to spend some additional cash and purchase a Chronograph, to check and know the velocity and, you'll need to know the bullet coefficients for the different bullets or bullet that you intend to shoot. The pellet will hit in a different place. I thought it was time for us to get an outside shooter to conduct some ballistic testing for us. A, where m = mass, and A = presented area. What Apps Can DoFirst and foremost, ballistic apps can calculate factors such as bullet drop, wind hold and environmental adjustments, and assist in determining the distance to a target—if you know the size of the target. Commonly used nowadays is the ballistic coefficient (BC or G) according to Karpov (i. While a pellets ballistic coefficient can change slightly depending on a speed of the pellet, here are the general ballistic coefficient figures for several popular. Thank you for returning to our third and final discussion on External Ballistics. A spacecraft with a high ballistic coefficient will come through the atmosphere faster than one with a low ballistic coefficient for a given set of initial re-entry conditions. > Ballistic Coefficients. In the end, I had compiled the equations necessary to calculate the many forces acting upon airsoft BB's, coupled that with a little know-how and developed a program in MATLAB to ultimately calculate projectile trajectory. c d = drag coefficient. I call the BC a fudge factor you play with to get your true world results to match up as close as possible to your ballistics program. All it means is that the bullet is benchmarked against a standard shaped object, and its performance is measured relative to that well known drag profile. There are two main methods of determining free flight drag. At left is a chart from Hornady’s online Ballistic Calculator. and applies a more precise value. BC is an easy way to account for air resistance. The drag cofficient is a dimensionless unit (has no units) that is used to quantify the drag or resistance of an object in a fluid environment. Ballistic Coefficient Can some one point me to OR enlighten me on the term Ballistic Coefficient? I found a chart that contained specific pellet, Pellet weight, speed, and BC. So assuming that was right, I found that for the time. Then cross referancing this real world data with a good ballistic calculator, you can come up with a real BC for your rifle/load. Having this discussion on another board, basically stemmed from one member saying that a bullet would be in flight for "over 5 seconds"in response to something else someone said about a 0. External ballistics is the study of projectiles in flight, from the time they leave the barrel (or hand, or trebuchet, or whatever), to the moment before they strike their target. 8 × 10 −5 m 2, the value for a. Aerodynamic. Its most common application is in analysis of bullet dynamics. 52mm pellet. This flight is inversely proportional to the negative acceleration: a high number indicates a more streamlined bullet. While I am at it, who (Where) has the best Ballistics Calculator for Air Guns?. that does it for a secant ogive VLD shape. 22lr Ammo Ballistics between 27 different 22lr cartridges. Its most common application is in analysis of bullet dynamics. I have been wondering what the theoretical exterior ballistics are on my Marauder shooting. You need to know bullet speed and the bullets ballistic coefficient. 152 100 grains Distance (yards) Muzzle 25 50 75 100 125 150 175 200 225 250. Trajectory of Bullet fired at 20,000 feet. Looking for ballistic efficiency? Find out information about ballistic efficiency. 45 cal 195 gr HP Copper Clad BC=. Share Thread. The ballistic coefficient (BC) describes the drag deceleration of the air gun pellet. This table contains information derived from on-line resources provided by ammunition manufacturers. 0) software that lets you calculate potential ballistic coefficients on your computer. Ballistic Coefficient Terms & Concepts • Air resistance is the frictional force that air exerts against a moving object. A is the projectile's frontal area. Best Answer: Your question is too general for a simple answer because ballistic coefficient changes with velocity and the method used to calculate the BC. Anyone know of any ballistics chart for these? I'd like to know how high I need to be shooting at 50 yards to be dead on at 100, and then how low that will be at 150 yards, etc. The Kestrel 5700 is a tremendous value in full-featured ballistics calculators. An example plot is shown below. Bullets with a lower BC lose velocity faster and thus tend to drop relatively quicker than higher BC bullets. I have hunted and made my own custom flintlock for many,many decades. Most input variables are self-explanatory. The ballistic coefficient (BC) describes the drag deceleration of the air gun pellet. Extensive testing was performed to determine and record these air-drag or retardation values throughout a useful velocity range. Bring up the rear is. Muzzleloading Ballistics Chart. It is a great investment if you want to get into long range shooting and will be especially useful if you handload. Cd is a standard engineering term used throughout the profession. A high BC means the object will slow down less. The weight is slightly lower than the Exacts however and should result in a slightly flatter trajectory in medium powered air rifles. A chronograph was used to measure the speed of four common hunting pellets near a Benjamin Marauder. A 10mph wind accounts for 5,969" / 165yards of movement assuming you've aimed at the correct direction and elevation. Rifle Air Rifle Ballistic Calculator Online. This is not the type of article written for entertainment. Up until now I have shot both LV and HV with my Steyr LG110, using 4. The number itself scales the effect of drag on a bullet to the effect of drag on a thoroughly studied standard projectile. The formum I am using to calculate momentum is: Velocity x Mass / 7000 = Momentum in ft-s. PowerBelt Bullets Copper Clad Hollow Point Pyrodex Pellets 26" barrel. Calculating a ballistics coefficient is not necessarily a difficult task, but a full understanding of the dynamics it describes requires some. Barnes Spit-Fire TMZ. That was listed as 0. 22 caliber and. (acronym of Ballistic Coefficient) of a projectile. For a relatively efficient. Debates about ballistic coefficients, as you can see, are largely pointless, as all the noise is about a lousy 10 yards of MPBR with a 2000 fps load. The rest is down then to the shooters own skill level. This item is incredibly nice product. Is BC dependant on shape (length, width, diameter) or is it a fixed value?. There are a number of good air rifle ballistics programs available. Soft Point Boat Tail (SPBT) and Pointed Soft Point Boat Tail (PSP BT) bullets have specially shaped back part of a reduced diameter, which lowers the air drag. Freeware small arms ballistic coefficient calculators. See also Edit. The ballistic coefficient (BC) describes the bullet related influences on the deceleration of the bullet caused by air resistance and thus is a measure for the capability of the bullet to overcome air resistance. 177 caliber pellets. Ballistic Coefficient Cancel Save × Force Balance Calculate Actual BC. Here, β is the ballistic coefficient, ρ is the density of the baseball, and D is the diameter of the baseball. -Ballistic coefficient estimation of the bullet. BC is a function of mass, diameter, and drag coefficient. So keep it at 100yds for deer. " Put another way, it's the ratio of the bullet's sectional density to its. Its most common application is in analysis of bullet dynamics. Having fired all my groups at the different ranges I measured the group centre points distance below the target centre. So you might as well just try differant bullets and figure out what they are dropping in what air density. They group the best and are shooting about 840fps. While a pellets ballistic coefficient can change slightly depending on a speed of the pellet, here are the general ballistic coefficient figures for several popular. I could swear there was a website or something with all the pellets bc somewhere. I might also note that the BC of the one standard AccuBond I've tested at longer ranges, the 140 6. This number is inversely proportional to the drag effect on the body i. AmmoGuide's Ballistic Calculator takes a middle approach. Buckshot loads are shown for comparison purposes. Home / Ballistics Calculator. This table contains information derived from on-line resources provided by ammunition manufacturers. Drag Coefficient of Air Rifle Pellets? I'm trying to find out appropriate drag coefficients (Cd) for real air rifle pellets. You'll find its results will differ from those published by ammo makers and from online calculators. 8 meters/second squared (m/s 2). An energy of 300 ft-lbs should be the amount of energy needed to move a 300 lb weight vertically one foot in the air against gravity. Aerodynamic controls which depend on the air pressure on control surfaces such as wings, rudders and fins can only work in the Earth's atmosphere. AmmoGuide's Ballistic Calculator takes a middle approach. To start, you can choose "Select Pellet" if you want to browse through the H&N pellet portfolio. Winchester Ammunition New Web Site and Enhanced Ballistics Calculator. Main influence on the projectile, the drag effect, is modelized by the universally used G1 function, which is also used by all bullets manufacturers and represented by the well known ballistic coefficient (BC). ; g = Acceleration due to gravity, which is 9. 's by brand somewhere on the web. There is a G7 B. The ballistics equations for spherical pellets in free flight are simplified through appropriate scaling of the pellet velocity and pellet distance. External Ballistics Part III – Understanding Trajectory. Handy tools designed by airgunners for airgunners!. Select the "Calculate" button when all fields are filled. Ballistic Coefficient. qBal Ballistic Simulator. The ballistic coefficient is a number that relates the air-drag deceleration of an actual bullet to the air-drag deceleration of a standard bullet. Also need to be known is the air temp, altitude, relative humidity etc. 52mm pellet. Applying this DC, the resultant trajectory calculations are very accurate for that particular bullet because the drag function has effectively been tailored for that particular bullet. All of this means you need a better handle on your ballistic solver, and must be rigorous to manage the details. FPE calcFind the foot-pounts of energy of the exiting pellet Pellet Weight: Free Shipping on orders over $179. We pioneered ballistics software over ten years ago and were the first optics brand to develop our own ballistics apps, which we made available free of charge. A Bullets BC changes, as its velocity changes. rangeservices. rimfire, shotgun, and handgun cartridges, bullet weights, and ballistic coefficients, including variations for sight-in. The heaviest Match pellets are a perfect choice for an air rifle, but according to our experience and tests we know that there are many air pistols which simply love them!. Enter your data in the areas provided below. I used KAC’s calculator to estimate my dope for my first NRA High-Power match with nothing but a 100 yard zero and a hypothetical velocity. I have been wondering what the theoretical exterior ballistics are on my Marauder shooting. The program is intended for simple simulation of the firing of various types of bullets. Shotgun Ammunition, Ballistics, Shot String, Effective Range, Shot Drop, Pellet Count, Retained Pellet Energy, and Ballistic Equivalency Conversion. The pellet will hit in a different place. Most ballistic calculators only allow you to use one, or maybe two different ballistic coefficients (G1 and sometimes also G7), but the ballistic calculator at JBM Ballistics allows you to use all of the ones I have discussed here (except GS), plus a GI model that I don’t think I’ve ever seen before. The number itself scales the effect of drag on a bullet to the effect of drag on a thoroughly studied standard projectile. Growing up I had never given much thought about the pellets trajectory and different projectile construction as there didn't seem to be much option as to what kind of pellets where available. - and actually be very, very different in action! Finding pellets of the same ballistic coefficients (BC) is far more important than selecting ones of the same design. Since then, there have been huge developments in two key areas:. As an object such as a bullet moves, air resistance slows it down. By Robert Beeman 19 Sept 2006. This 'ballistics calculator' is a computer simulation which analyzes the behavior of a round ball in its flight from the muzzle to the target. The G7 BR2, from Gunwerks, has achieved a significant milestone in shooting technology. I spent the day measuring the Ballistics Coefficients of all the. The parameter γ, which is the ratio of air density and ballistic coefficient for the target model,. the other parameters you can easily measure (weight too if you have a good scale). A ballistic coefficient based on the G1 projectile shape is properly identified as “C1” to distinguish it from other possible ballistic coefficients such as “C5,” “C6,” “C7”, “C8,” etc. 177 BB’s, as well as airsoft BB's. Therefore, one practical solution is to define drag coefficient, C d, in terms of the measured drag coefficient of the G1 reference projectile (C g) and scale the coefficient up or down by the mass, size, and shape of each projectile. • Ballistic coefficient • Twist rate • Muzzle velocity • Zero range Now for a simplified and quick look at each. Hornady's new Ballistic Calculator App includes the advanced state-of-the-art 4DOF calculator as well as a standard BC (ballistic coefficient) calculator. Want to fine tune your scope for range and reliability? Kenton is retrofitting turrets on select Meopta scopes. Range Shooting Angle ° Impact Offset Calculate. However, few shooters really know exactly what a ballistic coefficient is. EXTERNAL BALLISTICS. The data contains name and model/symbol number for various types of ammunition along with information on each bullet-type's ballistic characteristics such as muzzle velocity (M) and sometimes velocities at varying ranges. To start, you can choose "Select Pellet" if you want to browse through the H&N pellet portfolio. External ballistics. Having fired all my groups at the different ranges I measured the group centre points distance below the target centre. Procedures to obtain the data and calculate BC using specific software (Hawke ChairGun, Softchrono) or adapted Ingalls table. There we used only wad cutters and rifles that fired at 1000+ fps. You need to know bullet speed and the bullets ballistic coefficient. Randy Wakeman takes A Look at Shotshell Ballistics. Here (C) represents the drag coefficient of the bullet (you can find out for a specific bullet, or use C = 0. Online ballistics calculator with charts, selectable by cartridge and bullet. As many know, airgun pellet Ballistic Coefficients are a very complex subject. Trajectory of a projectile Ballistic coefficient can be used to calculated the path of a projectile. In this video I just want to show you how easy it is to calculate Ballistic coefficient to make your range cards as accurate as possible www. Specific inputs include: Ballistic Coefficient, Muzzle Velocity, Sight Height, Altitude, and Temperature. A ballistic table or ballistic chart is a tool which predicts the trajectory of a projectile, and is used to compensate for physical effects in order to increase the probability of the projectile reaching the intended target. It is inversely proportional to the negative acceleration: a high number indicates a low negative acceleration—the drag on the body is small in proportion to its mass. This is an elevation variation caused by the earth's rotation. This is a demo version of the program. 5 m/s after the spring is compressed 1 cm. We pioneered ballistics software over ten years ago and were the first optics brand to develop our own ballistics apps, which we made available free of charge. Rather, it derives the BC from basic, approximate data. 5 Creedmoor ballistics are among the best in caliber. Every shooter knows that ballistics programs need to know the air temperature, pressure and humidity in order to calculate a long range trajectory. FPE calcFind the foot-pounts of energy of the exiting pellet Pellet Weight: Free Shipping on orders over $179. There is a built in BC table in RSI's Shooting Lab software which I compiled for RSI and have been given permission to publish the table here. 010 with a pointed pellet that has a ballistic coefficient of 0. Air pressure is the atmospheric pressure. This module implements mathematical formulae and functions useful in the analysis and prediction of external ballistic. I looked up the H&N web site to get the ballistic coefficient for the FTT. The ballistic coefficient is a number that relates the air-drag deceleration of an actual bullet to the air-drag deceleration of a standard bullet. 45 cal 195 gr HP Copper Clad BC=. Just two key factors determine the external ballistics of a projectile; the muzzle velocity and the ballistic coefficient. This bullet has a Boat Tail Base and a Spitzer Tipstyle. Stated differently, you might say it enumerates how "slippery" a pellet is while in flight. I acquired a 4-12x40 Leupold VX-R in 2015, and after determining the clicks were accurate and repeatable, decided that it was time I tested a CDS dial. Calculating the coefficient of drag, Cd, is not too difficult. A former aerospace engineer and US Air Force missile designer, Bryan became the chief ballistician for Berger bullets in 2008. 0) software that lets you calculate potential ballistic coefficients on your computer. To start, you can choose “Select Pellet” if you want to browse through the H&N pellet portfolio. One is the classical dynamics of Isaac Newton, another is the field of fluid dynamics, more specifically aerodynamics. THINK!- MARYLAND METRICS - The One-Stop Source for Metric & British Sized Fasteners, Wrenches, Cutting, & Measuring Tools, Metal Shapes, Oil Seals, O-Rings, Mechanical Power Transmission Equipment, Bearings, Hydraulic And Pneumatic Fittings & Tubing, Workholding Components, Plumbing Fittings, & Some Electrical & Electronic Components. Ballistic Coefficient or BC, is a number that reflects how well a bullet cuts through the air. A virtual sensor is a mathematical construct to infer a desired system measurement (e. 25 caliber Using an online calculator, the corrected BCs of all pellets should be between 9 to. Unfortunately converting G1 BC (industry standard bullet aerodynamics coefficient model) into Cd (coefficient of drag, the model used for my terminal velocity calculator) is not something I know how to do correctly so we have to use assumptions here. You would need to Shoot your arrow, determine the zero speed first using a chrony and enter that into the calculator. As many know, airgun pellet Ballistic Coefficients are a very complex subject. Other reference included are: Ballistic Coefficient Calculator, Kinetic Energy Calculator, Minimum Twist Rate Chart, Pressure Assignments List, Metric Equivalents Chart, Powder Burning Rate Chart, and a database of dimensional drawings for 517 cartridges. Bullet Ballistic Coefficient Calculator. Ballistic Coefficient (BC): Typically obtained from the manufacturer, this value represents the ratio of dragfor a given bullet. 338 Lapua Magnum at 1250. American Airguns Website - The first website about airguns, air pistol, air rifle, and accessories. There are several third party Ballistic Calculators, most of them are free to download, and also “on-line” calculators, that can generate the bullet/pellet drop data you will need. 81 m/s/s); atmospheric drag is neglected. Combining complete onsite environmental measurements with the precise trajectory solutions of the integrated Hornady 4DOF ® ballistics solver, this rugged all-in-one handheld unit delivers the convenience you want and the accuracy you need for long-range success under any conditions. Basically, the program can be used for paintball, regular 0. Unlike the old version , this one can only be used for batted balls, not for pitched balls. The H&N Online Ballistics and Pellet Selector is very easy to use. While a pellets ballistic coefficient can change slightly depending on a speed of the pellet, here are the general ballistic coefficient figures for several popular. I found a website that lists ballistic coefficients for many pellets but I don't know if I trust it. Velocity at Near Distance (fps) Velocity at Far Distance (fps) Nearest Distance (yards) Farthest Distance (yards) calculated from retained velocity at two distances. 45 1,740 1,970 2,149. 53mm JSB Exact, 8,44gn, Batch 10 at 780fps. The free. 22 cal projectiles. After testing nearly 25 pellets in my TF-89, I've settled on RWS Super H-points. By Randy Wakeman. Courtesy of Steve_in_NC. There are many factors that will change the speed of a bullet leaving the barrel of a muzzle loader.