Quote Originally Posted by Dangerous Brian View Post
Hi greenwayjames

The barrel is a 15 inch .22 and the gun is a single shot. The pressures I gave should have read BAR not psi. I bought the HuMa ready set up at 75 BAR to simply fit and forget. Turns out it's not that simple. I assume it was a production reg that I took out of the tube. This suffered from the power spike which is why I was replacing it (previous owner had set the power to 9.5FPE so it didn't go over when dropping off the reg).
When I spoke to JB the other day he told me the regulator settings for all calibres and lengths of barrel. The .22" 15" carbine setting is 700 psi (divide by 14.7 for bars) to avoid the velocity spike as the rifle comes off the reg. Without a reg tester you are p*ssing in the wind unless the Huma reg is marked up accurately. Good luck. James.