I agree with the other two. The gun must be kept clean, and I agree it likes the CCI Ammo the best. I have some American Eagle stuff that was given to me by a rancher for shooting squirrels on his land, and it just gunks the action up and wants to not feed them very well. I think I will be getting me some more CCI stuff and junking the AE. Also, I am shooting some Remington Sub Sonics right now for taking care of jack rabbits, squirrels, pests birds and other vermin around the house, and it seems to like that stuff too.