My alaskan fishing rifle - Faxon Firearms Duty .308 WIN Barrel

I just got my AR10 rifle built and test fired, I made the right choice in acquiring this 13.9 inch .308 barrel and match it with my Aero Percision platform…this AR10 .308 rifle is my bear defense weapon when fishing in Alaska (along with my 10mm for protection if needed)…the weight of my weapon is not bad with 20 or 25 rounds uploaded as compared to 8 rounds of 10mm plus 16 rounds…plus the .308 is better power than 10mm in bear country at close range( my 10mm is close at hand if needed )…better to have both than just one and need both…..?