I got higher velocities with the 7 1/2's also. Something to note ---- I got my highest velocity with Sierra 100 gr. boatails. They were faster than the prohunters, hornady and swifts. Something to do with the bullet contact surface in the bore I suspect.

Also, I run a heavy buffer system by tubbs. That got rid of my swipes.

Edited by Siringo (10/01/12 09:32 AM)