Quote Originally Posted by Shed tuner View Post
In a mk1&2 they are too heavy, and that lump should be thrown away. With a suitable replacement spring, it becomes nicer to shoot.
However in the long stroke Mk3, they are need to maintain piston momentum with the much higher swept volume
Yep, power in my .177 HC certainly took a nose dive with that heavier item removed, John, necessitating a fair old degree of extra preload to bring the muzzle energy back up. When I next have a play, then, maybe I might refit that heavier original item?