So I turned up the hammer spring on my .30 Uragan and ran a shot string to see how it was doing. Pretty incredible shot string if you delete 2 shots at the end right before it dropped off the regulator. This was at a 250 bar fill and it dropped off the reg at about 150 bar. For 36 shots the extreme spread was only 6fps...I have less than 2 hundred pellets through this rifle.