A drilling is a meat gun.
I think if I were to go walking through the woods with one, it would be a 12X12 / 30-06.
The 12 ga can be loaded with everything from 9 shot to buck and it is hard to beat a 30-06 for big game.
They even make adapters that will shoot 32 acp out of a 30-06.
But a load of 7.5 and a load of 6's or 4's over a 180 grain soft point would take care of all most everything I could come across on the farm.
7.5's for quail, rabbits, squirrels, wood cocks, and dove the 6's or 4's are for longer shots or raccoons, opossum, coyote, bob cat. and the rifle can add to taking deer, black bear, coyote, bobcat.
If hogs are on the list, traditional loadings of buck, slug and rifle for driven pigs.
The buck for running pigs past the blind, the slug for self protection, and the rifle for longer shots.