Originally Posted by
dvd
I think there is absolutely nothing that a half decent split ring cannot handle in airgun cylinder pressures since they have been used for ages in high compression turbo-charged diesel engines and last many years in the harshest compression cycle one can imagine.
I think a reasonably competent person with a lathe can turn a few rings effortlessly if the cylinder bore is still true and the piston groove/cylinder dimensions are known. I would hate to loose more of what little power these fine pistols make by fitting leather washers.