BSA Scorpion (the proper original one)

[Shed tuner]

Jon, if you still have the nylon piston head they are sometimes too tight a fit in the chamber causing power to drop. Nylon can absorb moisture and swell up so making the piston head bigger than originally manufactured. Skim down on lathe to make a proper fit in compression chamber. I have had pistols completely jammed up because of this problem.

Baz

Hi Baz, for sure - mine has been skimmed

[Shed tuner]

Well, I "won" that .22 Buccaneer barrel off the bay, so let's hope it's a bit tighter... and if not, at least now I have a suitable donor barrel for drilling out / re-lining with a 10mm tube

I also bid on the stock.. my £25 was way off the £40 it went for

[Andy001]

I was tempted to bid on the same stock, but I've already got a template to build my own stocks for the scorpion. It's just finding the time.

Is it common to get the barrels to reline with?

[Tonyp16]

Hi mate how did you fix the problem with the trigger my Scorpian will cock but not engage the trigger..???? Any ideas what could be wrong with it. Thanks