M3 .22, shooting 33 grain Zan slugs @ 995 fps, 72 fpe at the muzzle. Slug power kit, no rubber ball and huma slug/pellet probe. Superior heavy liner and carbon fiber liner sleeve. First reg 180 bar, second reg 147 bar, Macro wheel 15, Micro 4.5, valve full open. 1 1/2 inch group @ 220 yards