I have the 178B air projector and I must say it is very accurate, of course I try to keep it 15 yards or under. My biggest complaint is if you don't get your shot of fairly quick the gun will bleed off air then you have to pump it again, and as you all know these critters learn that sound real quick. Thinking about the X-Caliber, should of just started with it I guess. You all that have it are happy with it?? Thanks