Originally Posted by
T 20
I ended up sleeving the transfer port down to 2.5mm on my O ringed 71mm stroked HW35, Jon.
yeah, o-ring with it's otherwise harsher landing would need some cushioning.. but I reckon std HW 30mm synth seal with a 69mm stroke and the 260g ish piston would be alot better on a 4.0mm port than it would with the 331g piston / 61mm stroke !
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.