XM193 is not penetrator, that's the XM855, 193 is just standard ball ammo, if a measly 55 grain FMJ will punch through I see no reason why a steel core 30 cal wouldn't.
and also, I have got 180 soft points out of a 300 weatherby magnum to punch through 3/4 steel plate at 100 yards, black tipped 30-06 will also but the silver tipped x54R bounces off, though it does still leave pot marks, at 200 against 1/2 I dont know, I rarely shoot my x54Rs at those ranges.
all guns lost in a tragic smelting accident.
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