The 129 and 140 grain Hornady flat base bullets have always worked fabulous on all sizes of critters. The 140 grain Amax's suck on game, but are tough to beat on long range rock chucks. I have taken a couple of antelope with them. I found the bullet jackets inside the antelope. They were flat and the size of a penny (no lead on them). I don't know where the lead went, but there wasn't much trauma to the antelope and they didn't go right down either, but just stood there, then tipped over and died, but after two that were identical, I went to the Hornadys and never looked back. These were 420 yards shots at a muzzle velocity of 3,000 fps.
Fabulous data!!! Thanks!!! Flinch
