I've got a Gamo PR45 pistol, converted to .22 with a machined Weihrauch barrel which I quite like.

It's recently developed a problem.......It works fine for a few shots then it will either just give off a "phut" and not shoot the pellet at all or sometimes there will be a delay of a second or two between pulling the trigger and it actually firing the pellet......Odd!

The breach seal seems ok so any ideas please SSP tinkering gents?

Cheers