[[ Ten years later I was reading an old Airgunworld article on tuning where it said that "PTFE piston washers need to be dry fired to form to the cylinder".
I got the gun out and dry fired it ten times just to make sure, the gun was instantly transformed and shot about the same as the .177".]
So a snot to divert the thread I posted in General about DRY FIRING to form PTFE piston Seal.
Has anyone else tried this ?]
Just fitted a PTFE piston to a `77, would love to know the answer
PJ
FX Verminator .177, Baikal IJ 38. 177, Gat gun .177, Haenal 303 .22, HW77 x 2 .177, Diana mod 27 1929 .177. EV2....... midshiresmarksmen.com