I have shot a few deer in the gut but i was always lucky enough to get a second shot on the deer. It is always messing the clean them but it wont ruin the meat. Like bugerking said dont let them sit, you have to get the mess out of there or else it will rot. I let me couzin from chicago hunt my spot, bad mistake. he ended up shooting the big boy in the guut right before dark. I tild him to let the deer expire. we went and found him int eh morning and it was already to late. even with a cold night he was still bad. we capped hime and got whatever meat we could.So the best way to prevent this is practice practice and pratice and don t make the gut shot.