Originally Posted by MrSelfDestruct

The DE is just as heavy as a light rifle or shotgun, and has several disadvantages:
-The ammo itself - The .50AE round is designed to expand and transfer power very rapidly, and there is a decent chance that it would just bounce off of a bear's skull. Bone is a lot harder than walls that are used for penetration testing, and those tests are always done with a direct hit, not a glancing hit, which is the likely scneario if you're shooting a heavy gun with a lot of recoil while running and trying not to shit your pants. This caliber of bullet is only practical in a rifle.