Hello chaps and ladies,
Another HW80 spring thread I am afraid.

I am trying to to decide what to do with my HW80. One thing I heard/read is that they work in .25" but what sort of spring is needed for this? A factory spring or something else?

I am also curious why it works, is it as simple as a big heavy piston works with a big heavy slug?

Cheers Rich (a boinger tinkering novice)