I just got my 30 cal 700 mm x barrel on my impact, and have got to do some shooting . I must say I am very impressed so far . Hammer on max valve limiter on 4 reg at 140 bar. I get the 45 grainers moving at 920 fps 50 grainers at 875( 84-85 foot lbs). The 45 grainers are a little tighter groups...