FX Revolution. Replaced pellet probe oring...accuracy now terrible

[AJ3]

I really got a winner in my FX Revolution...over the last year have well over 1000 shots through it with perfect semiauto cycling and it has been a tack driver. Well, all good things come to an end. Shooting yesterday, felt air on my face and it failed to auto cycle. Finally determined that the bore oring (pellet probe) was gone. After somewhat of a struggle, replaced the oring (1st time for me)...the semi auto functions perfectly again but the group has opened up from 1/2" at 30 yards to 1-2 inches. Any thoughts on what to investigate would be greatly appreciated. I did fire it about 5 times by manually cocking after the oring was gone...not sure if this could be a problem. The replacement oring is factory.

thanks
AJ

 

[fe7565]

I do not have this gun, but wonder if the new o-ring was damaged while being put on? Also, is the o-ring material hardness (70/90?) the same as required or that was on it before?

 

[Cliff_Allen]

Did any of the old, damaged o-ring material end up in the barrel or shroud? Maybe try a barrel cleaning? Shooting in the dark here, sorry I can't be more helpful. Maybe try replacing it one more time to see if it was damaged or not seated quite properly the first time?

 

[jack.steward]

Try to clean the barrel and shroud / cycling system line from any dirt / excess oil that could accumulate in it. I have FX Moonson but don't have Revolution, once the shroud and cycling system line got dirty, it gave in-consistent speed ( fps ) if you measure with chronograph. Cleaning up the barrel and cycling system so far help me out to put the shooting accuracy back. Good luck.

 

[AJ3]

I'll try a good cleaning and recheck the oring...thanks for the help.