I'll go with a little different twist on it, Ground squirrels can be a high volume shoot. A mildly gussied up 10-22 with a bunch of preloaded mags fits the bill. It has a short barrel to get in and out of the truck window without hanging up, and a decent 1-8x scope that I can shoot like a red dot when it's low or out to about a hundred and twenty-fiveish yards, consistently, with good but not too expensive ammo. I usually forget to put the brass catcher on, and it takes a while to pick up empties off the truck floor. Who knows how many cases are in the dash vents. I'll have other 22LRs along, maybe one or two bolt rifles, usually an old single shot, almost always have my favorite revolver ready to go, but the little Ruger gets the nod.
