Next time, start out with a cartridge that fires a big fat bullet that starts out at the diameter you hope a .30 will expand to. Something like a .45 Colt semi-wadcutter 260-300 grains at 1000 fps or less out of a rifle will be pretty much as quiet as you need yet pack a lot more whomp, even if it doesn't expand one iota.
Last edited by gnoahhh; 12/10/14.
