I have a AR 15 I have made that is the old Vietnam style (601 type) that has a 1x9 twist government style new copy barrel. I know the originals had 1x12 and the real early ones had 1x14. I also have an original AR15 carbine with a .223 chamber and 1x12 twist in the barrel.
Anyway, they shoot 55 grain bullets using TAC powder very well. I picked up some Sierra 52 grain match bullets and want to see if those make even better and smaller groups. Wondering if I should stick with TAC or does anyone here have a powder they have had good luck with and these light bullets? I have read the X-Terminator does well with lighter bullets.
I shoot 52gr Speer or Hornady hollow points with IMR 4895 in my varmint rifle and easily get 1/2" or less groups at 100yrds. That is all I use even in a very nice 8MM Mauser. That powder has been around for ever but is very versatile.
Posts: 1596 | Location: owosso,Mi. USA | Registered: August 18, 2002