LAST EDITED ON Oct-07-07 AT 00:12AM (MST)[p]All lead bullets for elk work just fine. I've shot a couple with the jacketed 348 gr. powerbelt and had good results, but when I sent them a picture of a big bull I shot and they offered to send me some bullets, I asked for the all-lead 444 grain powerbelts. That's what I'll shoot next time.
I just returned from an Arizona muzzleloader elk hunt, where a buddy had a tag. He killed a nice 6 pt. bull with a 495 grain all lead bullet in his .45 caliber whitworth. His bull collapsed in it's tracks like it was hit by a freight train. When boning it out, we found a jacketed "pistol" type bullet under the scapula, that had caused very little damage. Personally, for elk, I'll stick with good bullets that tend toward the heavier end of the spectrum.
We leave for Nevada for elk in two weeks. He'll be shooting his same .45 with the 495 grain all lead bullet.