RE: Can't get my Winchester 1300 to group slugs?
I sort of can't understand why people let gunsmiths or gun shops mount their scopes. It is not very difficult to do yourself and in most cases one will put more attention to properly installing it than a gunsmith or shop who probably will slap it on in a half-ass-ed fashion. I would take the mounts off and reinstall them myself making sure everything is tight from the base to the rings. The BSA may not be the best scope, but even most cheap scopes these days should be able to hold a group for you and let you know how the gun is shooting.