I made a trip to the range today with my new chronograph. I shot a wide variety of factory ammo and handloads, from 3 different rifles, and all velocities were about 200-250 fps lower than expected. But, I don't know if that is the fact or if the chrony is not reading right. I shot a fair bit of Winchester factory 22-250 ammo (45gr. JHP) and got consistent readings of 3,720-3,780 fps from a 22" barrel. Factory ballistics claim 4,000 fps muzzle velocity for this stuff, but they don't mention barrel length. The temperature here today was about 35 F.
Has anyone here shot the Winchester factory 45gr. JHP ammo (40 rd. white box stuff) in 22-250 over a chronograph? If yes, can you please tell me your barrel length, approx. temperature and the velocities you were reading?
Thanks!
Has anyone here shot the Winchester factory 45gr. JHP ammo (40 rd. white box stuff) in 22-250 over a chronograph? If yes, can you please tell me your barrel length, approx. temperature and the velocities you were reading?
Thanks!