THE GREATEST GUIDE TO ACCURATE 2520 FOR 223

just about anything from IMR3031 to Varget and R15 and everything between. Substantially slower as well as op rod is prone to acquiring bent from your port tension timing. 4064 can be a fav. In my M14 rifles I utilize it and 4895 and AA2530 too. I usually retain the R15 for my M40 bolt rifles. What this poster indicates can also be Employed in .30