will the failsafe even open in a deer though? i have no doubt they will stay together....but anyone kill a deer with them?? shooting a deer is somehting i have a pretty good chance to do....i kill them yearly....but a bear i dont know about even seeing one.....im just going to try hunting htem....but if the bullets just blow right through a deer i will be pretty bummed and proabably a hard track if they dont drop.....so do they open in deer?