I just got a cva single shot .444 marlin with a 1:20 twist and 25 in barrel. I plan on using a 265 gn flat point bullet and imr 4198 because that is the powder I have on hand at the moment. Has anybody tried this combination with any success or would you recommend another powder? How much of a crimp do I need being that I dont have to worry about the bullet moving on recoil?
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