I have contacted Utah air guns many times and they keep telling me 1:16 twist is the only one ever made for the .22 caliber 800mm. Mine says 1:14 twist
My hm1000x shoots almost any brand 34 grain slugs hole through hole at 25 yards , pellets are great to but the slugs definitely give a one hole group consistently.
Also what adapters did you buy to bypass the in rifle regulator and connect directly to the rifle with no tank using external regulator for ease of tuning. Thank you very much fir your help, this will make tuning so much easier
Tell me about it! I heard of Allen z but I heard it takes a long time. Would the airgun smith need my raw hm1000x rifle to machine a blank barrel for it? or can he do it just by reading specs?