I'm running my 22-250AI in a stainless 28" barrel but with the standard 14" twist. I do not plan on using anything heavier than 60gr's.Looking at building a fast twist 22-250ai and shooting 75 - 80 Amaxes. What is the best brass for fireforming and what is your preferred method? What speeds are you getting and how far are you killing varmints?
This is why I use the COW method, it doesn't add to the round count when you don't use any bullets down the tube, the pressure generated is so small using this method that I doubt it would be eroding anything from flame travel or the like.Thanks for all the replys. I am still up in the air on the caliber. Have thought of 22-243, 22-250, 22-250 ai, 220 swift, 220 improved. Looking for the best barrel life, when fireforming cases would that not add to the barrel's round count? Also would the barrel need to be longer than a 26"? Thanks again!