Well TT, as you live in GA, it's most likely you don't have much experience shooting colony PD's or specifically ground squirrels out here in the west. Our GS's are about 1/3 the size of an adult PD, are found in much higher concentrations, especially in irrigated alfalfa fields where we do all of our shooting. Landowners report crop losses up to $300K in a single year from these little pests, so they want them gone.
Being as these squirrels are absolutely stupid, they'll pop out of their holes all around the shooter, many times inside 25 yards, pop up and stand there looking at you. So the rimfire handgun you see in my SOB rig (Galco) is handy for these little buggers when shooting a CF rifle at such close range is just silly.
Shooting them with pistols and revolvers is not only great fun, but hones pistol skills at the same time, adding to the overall field enjoyment (for us, not so much for them).
And as our landowners want the 'big hole diggers' gone, that pistol comes in handy for those nasty badgers too:
In 'Rat Camp' one afternoon, a silly jackwabbit came tearing right through our trailer camp. My Kimber Compact Conversion nailed the bunny at 51 paces when he stopped for that fatal "look back".
So no charging PD's with empty rifles (oh the horror!), just more worthy targets for our rimfire pistols and revolvers. Next time you're out west, be sure to take a rimfire handgun along. You might be glad you did.