The insides of my used HW 80 bought recently from a shop look clean, dry and tidy. I've been able to try a few dozen of several pellet types in addition to my staple HWS Superdome and Hobby. I'm disappointed with the lack of consistency of muzzle velocity (that's the pellet - not the muzzle you understand). Used a Combro, but fixed it carefully with a little BluTak, and gripped the mout hard when test firning to minimise relative movement between the barrel and the Combro.

So would anyone fish out of their bin a list of recent numbers from the periodic check on their chrono? If I get a few of those lists I could get some "standard deviation" data from my 35 year old school calculator then compare it with my numbers.

Have you got the last series of readings from testing your springer handy? What gun and pelet?

Still very new to the game (but seeing prgress)