I normally hunt squirrels with a .22 or a downloaded centerfire, but was real sore from some work this morning and didn't want to sit, so took the old Stevens 5100 in 16 gauge and a few shells out of an old box of Federal,high brass paper hulled duck loads, 1 1/8 ounce of #6. Killed two and as I was skinning them, found a surprising amount of shot in both. Neither was very far, and I'd have figured the shot would have gone all the way though.
I haven't yet, but have all the stuff to reload 16 gauge and have a few pounds of #4 shot. Would fours be more likely to exit? I'm going to eat these, and would prefer to not have to worry about biting down on a pellet.