Hi there,
Dont know if anyone can help, I bought an Air Arms S410 Carbine recently and when I bought it the guy said that it had some air in the tank, when checking the guage said 100bar, he fired a few shots with it to show me that it worked ok and I left handing over the money, I have no problem with the guy being straight, he also said that the gun had been standing for a year and still had pressure in the cylinder. I have just taken the gun to a Diving Shop to have it filled to 190bar as it says, when he tried to fill it, the air was leaving his tank, and when the guage on his filling cyl