You can read more details about how HAM determines it’s typical airgun Ballistic Coefficient values elsewhere in our magazine. That can be useful when you’re selecting which pellets to choose for hunting or competition. For slugs we use the G1 model.īecause of our structured testing, HAM BCs are comparable against each other. HAM Ballistic Coefficients are calculated using the GA drag model for pellets. Our test range is at 244 Feet above Sea Level and all testing is done on days when the temperature is between 75 and 85 Degrees F with Relative Humidity between 60 and 80% with minimal to no wind. HAM’s Ballistic Coefficients are calculated from velocity measurements taken at the muzzle and at 30 Yards. Accuracy is a product of the gun, pellet, sighting system, ambient conditions and shooter capability. Two different pellets with the same BC can shoot with completely different accuracy in different airguns. You need this for accurate shooting!īut note that Ballistic Coefficients are NOT, in themselves, a measure of accuracy.
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In conjunction with a software program such as Chairgun, BCs can be used to accurately estimate the amount of drop a pellet takes at different ranges. In spite of all these issues, knowing a typical Ballistic Coefficient value for the pellets you are shooting is highly beneficial for calculating their trajectory. They are also effected by the airgun used to shoot them and many environmental factors.īecause the BC changes with the pellet’s velocity, there is actually no single Ballistic Coefficient for any airgun pellet!Īnd due to the variability inherent in each individual airgun pellet, the Ballistic Coefficient of two “identical” pellets can also be different!
Pellet BCs vary significantly according to the type of pellet and the FPS at which the pellet is traveling. These airgun pellet Ballistic Coefficients are intended to help the many serious airgunners who want to know typical BC values for their pellets, but who don’t have the time or resources to derive that data themselves.Īs many know, airgun pellet Ballistic Coefficients are a very complex subject. Here, Hard Air Magazine is publishing the World’s first comprehensive, structured and independent database of airgun pellet Ballistic Coefficients.
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