When i was running my m7 with a 20" 260 barrel i was using either 120 SPH, 120 NBT or 123gr Amax with H414, running them all to fit the mag. All killed stuff well.
My 260 barrel was a factory...
Type: Posts; User: GWH
When i was running my m7 with a 20" 260 barrel i was using either 120 SPH, 120 NBT or 123gr Amax with H414, running them all to fit the mag. All killed stuff well.
My 260 barrel was a factory...