P.E. Kelley Posted December 20, 2013 Share Posted December 20, 2013 Understood...you are a professional. Kids don't....please do this at home! Link to comment Share on other sites More sharing options...
mpeltier Posted December 21, 2013 Share Posted December 21, 2013 As I understand it, M193 was about 150fps slower, XM193 was the military designation for an improved version. It uses an improved powder formula to achieve the current velocity, with less velocity loss in carbine barrels, and also a boat tail as opposed to the M193 flat base. Original M193 spec was along the lines of 3050 out of a 20in barrel. My rifle clocks that out of a 14.5 with XM193. Please correct me if I am mistaken That's a new one on me. XM193 is a civilian designation for contract over runs that may or may not meet military spec for M193. It does meet commercial standards. Link to comment Share on other sites More sharing options...
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