I had a 7RM that i wanted to cut down. So researched the fuck out of it and a 20" 7RM will only do the same as a 20" 284 or 280 7-08 308 but with more recoil and muzzle blast (fixed by suppressor) and waste powder. So i sold my 7RM and got a 308. This is just what i read. im not a ballistics expert but i did troll the net looking for an excuse to do it, but no one said it was a good idea and they were doing better than smaller cals
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