I hope you have your blood tracking light in your pocket. You will need it shooting a tough old coon with an air rifle. We shoot treed coons with 22 LR 10/22's, and sometimes they still run like you just made them angry!
I will oftentimes use the Aguila Sniper Sub-Sonics. They are a 60 grain bullet, and put a good thump on a coon. Also, if they are being called and running, you better be fast at reloading that breakbarrel air rifle, because you need a second or third or fourth shot pretty often and pretty quickly.
Just my opinion, though, YMMV,
Kevlars
I will oftentimes use the Aguila Sniper Sub-Sonics. They are a 60 grain bullet, and put a good thump on a coon. Also, if they are being called and running, you better be fast at reloading that breakbarrel air rifle, because you need a second or third or fourth shot pretty often and pretty quickly.
Just my opinion, though, YMMV,
Kevlars