My .50 Knight Elite used all lead Buffalo SSB 285 gr bullets, probably pushed way too fast, for a few years until my supply ran too low. I would say the majority of deer dropped in their tacks. Many shots were 140 out to a big Illinois buck at about 175 who also fell in his tracks. The deer shot at closer range, that I can remember, seemed to run 20 to 50 yards and many times I noticed the bullet would enter behind the shoulder but exit close to a foot to the rear on shots that werent very quartering at all. I think I was driving them too fast. I switched to some sst"s and lost the dependability I had. Some very erratic performance, and I didnt even finish the season with them. I'm trying the 250gr deep curl this year. Most of my hunting has been with the bow, 2 bucks and 2 does so far, and only one with the mz. Had my grandson with me, 1st time on a gun hunt for him, and he was following the blood trail better than I was. Must be the younger eyes. She ran about 80 yards, hit tight behind the shoulder, quartering in a little, hit one lung for sure and destroyed the liver. Still have 3 tags. I'm a little concerned how tight they load. I'm using the long black mmp's. Can't use the crush ribs in black? as they are too easy and wont hold pressure with bh209. Need to find a compromise sabot for next season. Grandson cracked me up when he called me Ducky from ncis while I was describing the damage inside the deer.