So, with the OEM barrel, OEM bucking and the OEM brass collar, it shoots 400 FPS. Hahaha...
Am I on track about the leak using the Lonex bucking with the OEM barrel, or is the bucking that effective it chopped roughly 25 FPS when only dialled at 50%? I'm guessing the former but hey, entertain any comments
I'll test for nozzle sealing later to rule out a bad install.