Unfortunately, most 9mm and .45 acp ammo will penetrate more interior walls than M193. 5.56 M193 55gr fmj travels so fast that it begins to fragment (break apart) and usually doesn't penetrate as far as 9mm and .45 does. The only downside of 5.56 for interior work is that its is alot louder, but some electronic ear muffs by the bedside solves that.
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Last edited by AgentTikki; 01-18-2012 at 08:50 PM.