If my feeble mind remembers correctly,and unless things have changed. the world record Alaskan Brown Bear was killed in 1952 with a 30/06.
I also have a vague recollection that the world record polar bear was shot with a 270.
If nothing else, we can take this and several decades of dead bears to establish safe minimums.The 30/06 has passed so many similar tests it doesn't merit conversation.
Coming to firm conclusions on brown bear cartridges is OK so long as we don't take our own advice too seriously; there being very few living humans who can claim "expert" status on killing brown bears simply because so few get much opportunity to kill very many,or see very many shot.
We have some such people posting here and have already heard from them.
I have killed only two; and seen three others shot.Both of mine were killed with a 375H&H. Professing any expertise or lecturing what else works and how, based on such thin experience is the same as saying I'm a great ladies man because I pinched a couple of asses in a crowded bar.
