A double hands down,a double saved my bacon about a month ago.Buffalo came from behind cover at 15 yards, ph and I both shot to little affect, the left barrel of the double was triggered and spined the bull at 8 yards.The caliber was .450 NE 3 1/4" with 480 gr. bonded Hornadys.
Sometime you need the quick second shot,glad I had what I had.