Hi all
I recently bought a crossman tr 77 air rifle, plenty of kick/power compared to the old spring loaded rifles.
It has apparently a 1200ftps , my problem is the scope moving constantly sliding back off the rail.
I’ve tried to solve it by tightening etc, been back to the shop told them they changed the two mounts for a larger one, they fit it tightened it etc, said try that same problem,
The gun is brand new been back and fourth trying to fix it ? Any ideas ???