7-8 grains of Trailboss should be subsonic in a 308 with Robert’s 151’s.
My 24” 1:12 twist is 7.5 grains, the 16.5” 1:8 twist is 8 grains.
Other projectiles can be very different loads, the Sub-X...
Type: Posts; User: Cigar
7-8 grains of Trailboss should be subsonic in a 308 with Robert’s 151’s.
My 24” 1:12 twist is 7.5 grains, the 16.5” 1:8 twist is 8 grains.
Other projectiles can be very different loads, the Sub-X...