Quote Originally Posted by jon_h View Post
It was shooting quite nicely.

I rather excitedly added my tinbum short stroke kit to my welsh willy internals (spring,guide, top hat, washers and piston seal) bolted the scope on, took out a new tin of pellets (h and n barracuda as opposed to my usual h and n ftt) then went forth to zero.

Something close to 6 inch groups at about 12 yards. Ouch. Tried taking the mod off in case of clipping but no. Nice firing cycle though!

Got a bit emotional and gave up.

Going to methodically go through everything once I can muster the enthusiasm.

Pants
With all the mods you have done there is a fair chance it will of changed which pellet it prefers. I suggest you start with FTT and then try others if no luck. Mine likes Crossman 14,3 grain round heads best.
Atb Max