I honestly prefer the Barnes Original in .458 300gr Semi Spitzer. It has a copper Jacketwith an exposed lead tip, groups in my Triumph 2" at 100yds with the orange MMP Sabot. These bullets have great energy and high weight retention. The only elk I have ever shot with it was decimated. It took a 22yd hit right behind the shoulder, I found several small pieces of heart in the juniper tree behind where it was standing. As you could imagine it died instantly. Check out this website for any question....
http://www.chuckhawks.com/index2h.muzzleloader.htm