Quote Originally Posted by 223to45 View Post
This post has been interesting. At our range we keep ending up with some steel damage during our comps.

We check for M855/SS109. Never would have thought a SP would do damage.

So we have decided run our own test with fresh AR500 steel, and various 55 and 62 gr loads.
Just to see if we need to get more restricted with ammo.

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Perhaps this is in the offing??

https://www.polyfrang.com/5-56-mm-fr...ppressor-safe/