Herzo
Silver $$ Contributor
I pulled a Remington 600 that I had rebarreled to .223 out of the safe last week. It is a .223 & not a 5.56 and had set in the safe probably cocked for several years. Wanting to check the zero on the scope, I attempted to fire some some American Eagle AR .223 (Federal) through it.
First round did not fire. After waiting an appropriate length of time, I ejected the round and saw a satisfyingly deep firing pin strike. The next round fired as it should. Next FTF. In all I had 3 FTF out of a dozen rounds. I then ran the 3 FTF rounds through an AR and 2 of the 3 fired. I looked on the box and found "Mil spec primer, for best performance use in AR style firearms".
I'll have to try some reloads with commercial primers.
First round did not fire. After waiting an appropriate length of time, I ejected the round and saw a satisfyingly deep firing pin strike. The next round fired as it should. Next FTF. In all I had 3 FTF out of a dozen rounds. I then ran the 3 FTF rounds through an AR and 2 of the 3 fired. I looked on the box and found "Mil spec primer, for best performance use in AR style firearms".
I'll have to try some reloads with commercial primers.