my pcp pistol (which uses a small tank) i use a hand pump made for that use case, but it takes a lot of pumping.PCP's have always intrigued me. We used to shoot frogs with 22's but they banned them. You can use airguns though. I considered getting a Benjamin marauder for the frogs but never did. Would be cool to shoot a deer with one. How do you charge the tank back up?