My primary HD weapons are my Sig P6 w/ 147gr HST and the Remington Police 970 w/ 00Buck. But for the AR, would the XM193 55gr be adequate for taking down human targets? Probably will never use the AR for HD but if that day ever comes would it be enough to get the job down? Or do I need to have a mag full of hornady 556 75gr? Wanna kill these ads? We can help!