just got done loading some Barnes x bullets, all copper for deer season in my 30-06. Really neat bullets, they exand out in a 4 petal mushroom that is razor sharp. I tested a few on 1 gal. water jugs (full of water)and they torn em nealy in half. I am expecting good results on a deer (if 1 comes by). The manufacturer claims 100% weight retention after impact. Wonder if they are gonna start making defensive caliber bullets too?