New barrel lowered power?

[accused]

50 or so pellets its at 11.6. It has a new piston and seals so seems to be settling now. Yes the K from full length is probably the reason that its no more energy than the longer .22 barrel.

I'll be happy if it sits where it is now, averaging about 510 fps

[Shed tuner]

PCP have loads of volume, springers don't.

even without losing 2" he may have lost a bit going to .25. Certainly on a lower swept volume guns.. see my earlier post.