So, I started building this rifle back in November. Posted pics and was going to shoot it next day on the chrono. I filled tank to 4100psi and during the night, the cheap chinese regulator blew a burst disk. So I ordered a Ninja high pressure reg from Hajimoto and decided to redo a few things while i waited on it. Heres the final version. I have only shot it to 50 yds thus far. At 2400psi on reg and 1 1/4 turns in on hammerspring it was chronoing at 52 fpe @ 840 fps with JSB 25.39 pellets. It shoots great. Ill post what i have now and then follow up with final results.Going out to the family farm tommorrow to see what she will do. I dont think i'll have any problem getting over 60 fpe from this rifle. I will post results. Its a .22 Avenger that i sent the barrel and action to Ailen Airguns. Wayne ported barrel, increased valve to 7mm and installed 8mm peek poppet. Installed heavy hammerspring and a light valve spring. He removed factory plenum ceiling and installed 25cc plenum. I installed an AESWEDE trigger and shortened carbon fiber shroud with his bottle bands. I installed 700cc carbon fiber bottle with a Ninja high pressure regulator, so the gun is dual regulated. The scope is a Monstrum G2 6-24 x 50 and the tripod is a Talon Tunes carbon fiber custom. The chasis is from Termidator which i painted to my liking and features a folding stock for easy hammerspring adjustment.