Funny you should mention M193, back about 6 years or so, was shooting some AR500 with M193 out of a 20" barrel. It stopped Green Tip just fine, but the 193 punched clear through. I was livid, as I thought my steel supplier had given me the wrong spec. Turns out, I probably should have mentioned it to someone, as I believe it was a short time later the trouble with M193 @ 3000+ fps and certain steel rifle plates arose. I think Doc knows what I am talking about. That durned M193...!
D-R
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