Not sure where to start , but found my 5.5 Crosman Nitro Springer starting to shoot all over the place yesterday after grouping nicely most of the morning.
Could not get it to hold zero, so like a good boertjie just kept plinking away trying to figure out the problem.
Started to get that unhappy crappy feeling that my scope was at fault but hoped for the best....
Well one I pulled off the Hawk one piece mount I found the center pin on the mount had carved this lovely new crater.
Upside is that my scope is probably not at fault (touch wood)
So... any suggestions will be welcomed as ponder my next move from here.