345 DeSoto
Member
I've given up on trying to find a 12 twist 20" barrel for the .223 AR15 I'm putting together. I HAVE found a few 9 twist 20" barrels that I'm interested in. Is this a good twist/length for accuracy out to 300 yards, using 55gr BTHP? I'm using 40gr BT in my 12 twist Savage Model 10, 22-250, and that weight bullet is a tack driver at 300 yards. I figure the faster twist in an AR autoloader could use 55grns. Need some solid advice on this, before I sink a lot of $$$ into something totally wrong. Thanks, guys...