Screwtop.243
Ouch...that thing kicks
Whiffy scored me this Mark V Altitude (6.5 CRDM) for Christmas, as I had been wanting a lightweight rifle. I don't have any H4350 but got some Varget, RL-15 and IMR 4350. The rifle has a 22" bbl., and I'm going to use a 123 grain SST in favor of the heavier 140 class pills for swamp donkeys around here. Which would be the best powder to start with for this configuration?