I'm shooting a 7 WSM with 64.0gr of H4831sc under a 168 Berger VLD. I chronographed it with my ProChrono and got an average of 2877 fps. Zeroed at 100 yds. I then took it out to 800 yds to try the TRUING thing. Shooter App said I needed 18.5 MOA. That made me shoot high. I really needed 17 MOA. I used the Muzzle Velocity tool on Shooter and increased my velocity to 2955 fps to get it to equal 17 MOA. I comfirmed trajectory at 300 yds.
So is my ProChrono giving me the wrong velocity? Am I really shooting 2955 fps?
So is my ProChrono giving me the wrong velocity? Am I really shooting 2955 fps?