.25 ultra se throwing a tantrum

[clintwestwood]

good morning from a sunny hot kent coast in uk!

this seems to be the best place to post this one.

now, something rather odd has occurred to the above. iv'e just serviced it really nicely , all new o rings etc lubed properly. i got him set at 11 ftlbs , re zereoed in to only 30 yards,  it was totally awesome, hole in hole shots for around 50 times i guess,  went to work, came home to take it out for a bit of target practice and its all over the place!  one shot even was off the board! of course iv'e kept the pressure very consistent,same pellets etc.

i thought maybe it was down to me all stressed after a long shift at work, so i took 10mins, had a think about my life etc lol.   re shot again another 9 but nope its like gone crazy still.

iv'e been servicing and using these things for many many years, but this is way annoying.


any thoughts from you clever guys on here?


dave

[eeler1]

Clearly, going to work is the problem.  Best stop doing that.

Chronograph?  Scope?  My Scorpion once blew out the little snap ring (circlip) on the valve.  Apparently it was not securely in the slot.  It became very erratic.  Just a thought.

[rkr]

Silencer came loose on the barrel?

[clintwestwood]

thanks for the input guys.

its none of them, its beat *(&^ outta me!
so frustrating. i guess its just gonna be a total strip down, service and rebuild with fingers and toes crossed.

[rkr]

Is it vertical spread or all over, i.e. problem with velocity spread or something else? Start with the scope, check tightness and if possible try another known good scope. Check probe nose, probe o-ring, muzzle and magazine. Feed in one pellet and push it back, do you see damage? Finally take off the barrel and slug it. Loose or too tight action in stock may cause accuracy problems in BSAs.