Quote Originally Posted by T 20 View Post
Ah, Evert.

Embarrassingly, and weirdly, after a quick measure I only seem to have a 66.5mm stroke. --- I thought I was over 71mm.

I'll double check in the morning and strip the action down again but it looks like I'll have to machine up a custom piston.
Alternatively, perhaps I could use a 99 piston and just replace the body with a 25mm one, depending on the 99 piston's length.



All the best Mick
If my memory is correct, its been stated somewhere that the HW55 has been delivered with different pistons adapted to different power level.
May just be a rumor though, or me remembering something that was said about another gun.