Spring room? Owwww I am going to have to think about that really carefully. Shorten the stroke to get a better swept volume to TP volume ratio means there will be less space between the inside face of the piston and the back block to get the spring into... which means ... a shorter stiffer spring than if it had more space? Doesn't the HW95 have the same stroke as the HW80?
The ProElite is an extraordinary rifle. Not sure how it compares in performance terms with an 80 but probably it's by far the nicer rifle and I've never shot anything as accurate.
Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.
Don't try to make the Weihrauch model numbers MEAN something, that way madness lies ...
https://www.youtube.com/watch?v=N-uyWAe0NhQ
I'll tell ya this much - a while ago, when I was alive, I had a MK1 80 (30mm) and a MK1 77K (25mm).
Both .22 cal, both doing 11.5 FPE, both freshly lubed and running fresh HW mainsprings. Shooting them both off-hand, via their iron sights.
Given that they're both around the same weight, by the numbers, the '77 should have been head & shoulders a lot nicer to shoot - yeah?
To be honest - there was very little in it... the '80 had a little bit more felt recoil. But that was it.