Keith; you are ALREADY carrying a rifle along with you. A lot of fisherman in AK just carry .44 Mags or other large caliber handguns.
Since you have made the (commendable) decision to pack a rifle along with you, make it a decent rifle caliber, OK?
Friends don't let friends carry mouse guns, or rifles. On the other hand, you don't have to carry what my favorite gun store gunsmith showed me today: a 4 Ga. rifle cartridge. The projectile weighed 2000 gr.! Imagine the weight of a double rifle in that caliber. Yikes.
So, get a decent rifle caliber, and stop fantasizing about hot pistol caliber loads. You will probably live longer. Walt