Thank you guys. The barrel is a crosman barrel I got from Mellon air. I have though many times to replace the barrel with a BSA but this barrel shoots amazing so why bother. I figure I could save the money for another project...Like an mrod .25. The pellets used is JSB 18.1s. I use this pellet exclusively because it shots the best. I gain about 1 to 2 FPE with heavier pellets but they don't group as well.