I probably shouldn't but here goes.
You'd be alright with a 6.5 x 55 SE!
Now I'll sit back and watch my float.
Even a stick would be better than a camera.... as for the 6.5 x 55 SE Would it have enough velocity at that range......
Maybe a little more velocity than the stick, Just?
Thar and Jingzy should be able to sort this one judging by the post regarding the 6.5 x 55
How dare you...of course the 6.5x55 would do the trick ...the bear would have choked to death by the time he got to the butt end....
Perhaps if you could get a 6.5x55 with varmint barrels it would be heavy enough to beat it with?
Considering the old and quite stately 6.5x54MS was favoured by Bell for brain shooting elephants, a 6.5x55SE should do quite nicely in this situation, providing the shooter can hit the spot of course!
Couldn't use an elephant gun on a bear, jaysus!