Gentlemen: I have a Remington model 12 pump .22LR that my Dad put a Weaver B model scope on using the Weaver N mount (back in the '50's). The rifle now has 4 large holes in the side of the receiver and the value has been ruined. This rifle is pushing the century mark. I would be very careful about using those old mounts. The scopes suck compared to the newer 3/4" and better yet 1" scopes. Most are cloudy now and need to be rebuilt anyway. Do some investigation first.

Art
In life you will find that constants aren't and variables won't.
Life is like a sewer, what you get out of it depends on what you put into it.