Haven't shot a bear myself but I watched my friend shoot a small brownie with 7mm Rem Mag and 175 Nosler partition - approx 150 yds, 1 shot through the lungs - bear went 100-150 yds and died -he should have aimed for bones. Another friend shot a bear with a 375 H&H and Barnes X (don't know wt but possibly 250??) - by his account the bear expired very fast - hardly traveled at all. I carry Nosler Partitions in 180, 200 or 220 for my 300 win Mag. I'm very happy with the 180 partion on the one moose I shot - 1 shot approx 120 yds high in lungs - traveled about 15 yds into river, stood around and died. Thank God I was able to float him to shore. I'm experimenting with 180 gr failsafes and I'm getting good accuracy in the 300. I love the 180 Nosler partion in my 30-06. I'd say the Nosler Partion is the gold standard, I read Failsafes are great, probably Swift A frame is fine, and if your guns like them, the Barnes X should be good. With the Barnes I'd consider using a slightly lighter than conventional bullet to compensate for their length, their solid construction, to reduce recoil, and to assure the velocity for good expansion. I think another friend of mine uses the 338 225 Nosler partition for everything. He's taken several large moose.