Anschutz 335 - a candidate for piston seal conversion?

[evert]

The guns must be completely awful with the heavy spring?
Or does the heavy spring create more aggressive dieseling that softens piston slam?

[T 20]

The guns must be completely awful with the heavy spring?
Or does the heavy spring create more aggressive dieseling that softens piston slam?

When converting from leather seal to synthetic I normally find a big change in firing characteristics using the same Spring.

There seems to be a few theories about this, such as leather sealed Pistons relying on a small detonation of oil to produce power whereas the synthetic sealed piston doesn't.

Whatever the truth is, whenever I convert leather sealed Pistons to O ring or synthetic seal I've nearly always had to sleeve the transfer port down to regain a nice firing cycle --- the exceptions being Airsporters MK1 and MK2 and leather sealed HW35s with the smaller transfer port.




All the best Mick