I had a lot of trouble in the 243 with bullets blowing up inside and not coming out. I tried 100 gr Sierra BTSP, Hornady 100 gr round nose, 90gr Ballistic tips and I do not remember what all else. The problem came when the shots were inside 100 yards. Changed over to a 100gr partition and it ended all my problems. Never had a bullet not come out on a deer no matter what distance or angle I shot them at.