I just killed a 5x5 elk with a 280 rem. Hes was a young bull anout 500 lbs. I don't know what he scored but the 150 grain corelokt bullet from the pre 64 model 70 featherweight did just fine. he walked 30 steps and collapsed. If I had had a longer shot I would have been more comfortable with a .300 winmag or 7mm rem mag.
okcmco