I have a tracker with #11 cap. I was shooting 345? grain power belts copper jacketed. I have only shot it a few times but it likes 130 grains of pyro pellets with that bullet, dead on at 100 yards. I am going to put a peep on it and sight in more better latter. I like mine, cammo stock and nickel barrel. Good so far, only 10 shots threw her though.