![]() Regards, John Edited By John Wood1 on 16:27:28 With my old Webley Axsor I bought a hand pump. It was about £40. To make one you would need about 600-700 mm of 25-35mm thick wall hydraulic tube. You will have to design the top guide, piston and valves your self. The pump shaft is 12-14mm solid rod and the ‘T’ handle is equally rugged. The bottom of the pump with the foot rests was also steel, with a 250 bar pressure gauge and had a ‘blow down’ valve to depressurise the system and get the gun off. ![]() Just for information 300bar is over 4300psi. A normal PCP actually only needs up to 200bar for charging so that should lessen your requirements a bit. Dont forget that you would also need a good particle filter as well as very efficient moisture traps so that you don't introduce moisture into the weapon. I think it very doubtful that you will be able to make a compressor to deliver that sort of pressure, apart from the stringent mechanical and valving requirements, those pressures are scary to work with.
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