Re: 223 AI fireforming load
Not sure about a fireforming load for the 223 AI, but I would assume that loading approx. 10 grains of a shotgun or pistol powder (read: fast burning) and then topping it off with either cream of wheat or cornmeal should do the trick. Just stuff a piece of toilet paper or kleenex in the mouth to hold it all in place. Works well and has less wear on the barrel with no $$ wasting on bullets. I have done this with both my 6.5-06 AI and my 277 AM brass. Just make sure you remove your brake (if you have one) before using this process.