Re: .45 enough for a bear?
I agree with everything Alaska guide said,I spent 19 years on Kodiak,guided bear hunts on the south end,in my early days,I carried a .41mag,once I had a close one with a wounded 9 1\2 footer, I had a 12 guage with 00,slug,00,slug...after unloading the shotgun,(15ft away, bear was down)not tell the 4th shot,I unloaded the 41...later I was in the area and took a look at the bones after the birds had picked them clean,I found a vertabre with a .41stuck in it,thats right,it was not broken,it just stuck in the bone,one of the slugs was curled up in his eye socket...,that was the last time I carried a pistol or a shotgun for Bear,I packed a 375HH when guiding,never let me down.For me Your hunting rifle,and bear spray is a very good choice,and you won't have that chapped spot from packing that hoggleg around.
Good luck on you're hunt!