I'm kind of late weighing in here, but I've always used a standard front and offset rear ring on No. 1's as others have mentioned. I also mostly use 1-4 or 1.5-5x20 scopes so I'm not fighting the objective bell interfering with the rib. As to your current issue with 30mm rings, I'm unaware of any 30mm offset rings for the No. 1. The only other option I am aware of would be to use the Ruger to Weaver adapter (from Burris) and 30mm Burris Z-rings. It makes for kind of a clunky set up, but should solve your issue.
