my favorite tree rat gun has to be my t/c fire hawk 32 cal. its a flat shooting toy of a muzzel loader.
light and a lot of fun to shoot. but if i want serious meat i have a .22 ithica saddle rifle i got at a garage sale 20 + years ago and i seem to be able to hit any thing i point it at.grew up with .22's on the farm but i'm getting old and crawling to get within 75 yd of whisle pig has gotten a bit harder so now i have a 22-250 and sit on the breather cap on top of the stall barn and cap em from 200-500 yd. this has proved to be quite entertaining. made sence of the phrase ( happiness is a red vapor) damn things literally explode.
just got 2 new stevens 06 and 223 so looking forward to some more fun this year. and yes they both qualify as small game rifles as the woods are my range and chipmonks and reds are targets. equivilent of a post it note on a string with a slight brease at the traditional range.