"diameter" my bad....I mean the thickness of the casing wall.

The brass itself gets thinner every time you shoot so the dimensions start to get harder to get back to and keep any integrity to the casing. How many times will you reload auto?

Since you reload then you know that you will eventually split the casing.....I've always felt why risk jamming an auto up with thin brassed, non-uniform reloads. <img src="/forums/images/graemlins/confused.gif" alt="" /> MAybe for practice but when the stuff hits the fan I'd want a magazine full of virgins. <img src="/forums/images/graemlins/wink.gif" alt="" />