7dawg9,
Whitetail - Speer 210 DeepCurl / GDHP'S - been using those with great success on deer and hogs. Excellent accuracy out of my 41.
As for elk, I'd go with the Federal CastCore 250gr load, or the 265 Buffalo Bore LWN offerings for additional penetration. I have no personal experience on elk, but some of our previous forum members have taken elk and moose with the 41 and hand loads similar to the factory cast offerings above.
