EV2 help please
Here is a problem that I am experiencing with my EV2. Any suggestions as to what's wrong would be most appreciated.
It is a Mk2 EV2 with a John Ostler reg.
Problem - cannot hold zero.
In bench testing at 20 yards I cannot achieve a group. Two or three will go in the same place then one will spit out left (usually) or right. Then another will drop high or low.
I have thoroughly cleaned the barrel.
Removed the stripper.
Used two scopes.
20 shot string through the chrono ranges from 774 to 790
Anyway I'm lost, please help