I've killed a few bears. The largest, and the one that lived the longest after being shot was hit with a 338WM. Broke only one shoulder and took out the heart. The 225 Hornady IB left a fist-sized hole on exit. The bear traveled maybe 40 yards before dying. Others with 270s, 308s and 06s went down sooner, some in their tracks. The difference was both shoulders were broken and/or the CNS was disrupted.

As rost mentions, ya need to hit a bear in front of the crease.

Nut


Experience hath shewn, that even under the best forms of government those entrusted with power have, in time, and by slow operations, perverted it into tyranny.

Thomas Jefferson