Re: mount for ruger no.1
With a #1 the problem is usually that the scope is too far forward to begin with and you need extension rings to get it back to you.
I do not know of a problem in mounting the extension rings backward and getting more eye relief but maybe there is a problem. I haven't ever tried that with the Ruger base.
I also know some other tricks that are more expensive.
The Smokin Fur Rifle Club