Kral Puncher Pro .308
20" .308 barrel machined to fit the breech. .250" transfer port from valve to barrel. Power tune kit installed. Sleeved the bolt. Drilled out the power adjuster and threaded to 5/16"-18 and installed a cap screw before the transfer port was drilled out. It still functions as a power adjuster in this configuration. 785fps with only a 20" barrel. JSB 44.75gr pellets. This at only 17-1800psi. This valve likes the lower pressure. Going to regulate it and add a 25-28" TJ barrel which should see 850fps and 30 shots.