This is My new 22 cal Seneca Aspen picked up on line bid auction for 100$. Once I lubed and pumped my adapter blew off and I had to lube the O rings and eventually the next leak was the tube extension check valve. Multiple attempts of lubing and pushing the tip around the the gasket, bearing and spring it sealed up. Oh ya so was running thru the guys city 2 weeks after I won the auction in vacation so I didn't have to pay shipping anyways.... 10 attempts (24 hrs) at lubing, pumping, dry firing/degassing lube and air and its holding at 3000 psi for 2 hrs. I'm gonna Chrono it in the next few days. It's shooting beautifully but I need a different mount set up as this is just rigged to test fire. I'll post Chrono on several pellets and a good slug. I'm PUMPED to pump this test up!