Plenty to Choose From
If she and the Ruger Security-Six can handle the recoil, there seems to be plenty of choices for ammunition suited for the backcountry. Certainly, not grizzly defense ammo. But, I would think anything else would be in jeopardy if struck in the right spot with these.
"My plea is that we stop seeking out the storm and enjoy more fully sunlight. I am suggesting that as we go through life we accentuate the positive. I am asking that we look a little deeper for the good, that we still our voices of insult and sarcasm, that we more generously compliment and endorse virtue and effort." Gordon B. Hinckley