The Ballistics Coefficient is a measure of how the pellet retains velocity.... the higher the number the more velocity it retains.... so bigger is better.... Round nosed pellets are king, wadcutters not so good.... pointeds and hollow points are in between.... Heavy pellets generally are better than light ones.... The BC tends to fall off at high velocities as well.... I'm not sure if the BC changes with air density, but how it affects the velocity would....Bob
I shot 5 shots groups inside with the Chrony at 1 yard from the muzzle.... I then repeated all the strings outside with the Chrony at 25 yards from the muzzle
.....t I thought I'd point out one "possible" region of error...