I guess the worst failure I've had was a factory 150 grain Remington Core Lokt out of my 7mm mag. This was before I started reloading. I made a poor shot, but hit the deer in the spine, at 175 yards. The lead came loose from the jacket, and didn't even exit. Although, I walked to the deer immediately, and it was dead by the time I got there, shrapnel went down into the lungs.
Another bad one, but understandably so, was a 30 yard shot using a 140 grain Nosler Balistic tip, from the same 7mm mag, this load pushes just shy of 3000 fps at the muzzle. On a deer again, I took the shoulder shot and on impact the bullet exploded and made a huge entrance wound. It penetrated into the lungs but did not even touch the far side rib cage. The deer dropped, well more like blew over sideways

from the impact and managed to get it's front end under it and started to push itself with it's back legs. A quick neck shot finished the deal. At that range the volocity was far to much for that bullet, but I still use it for deer. It's not often I get a 30 yard shot with a rifle on deer, but at distances at even of 100 yards it preforms great. This year I took my buck at 404 yards. The bullet was not a complete pass through, but lodged against the hide on the farside. Where it passed through the heart you could see the entrance hole, the opposite side was completely exploded.
Next year though, the 7mm mag, a friend I've been deer hunting with since I was 18 gets to rest. I'll be using a 25/06 AI, and as long as I can get the 100 grain Barnes Tripple Shocks to shoot the way I want, then I think I'll have a deadly combination with that rifle too.
