Thread: Scope ring options

Question for the gurus - I’ve a old German scope that’s 27mm in diameter. 1” rings won’t work unless it’s milled out slightly so I’m thinking of putting spacers into a 30mm ring to fit.

Would a delrin bushing that’s converts a 1” to 7/8 do the job? Since 7/8 of an inch is 2.225mm and it’ll bring my 30mm ring closer to 27mm? Or should I just put some thick rubber inserts between the ring and scope?

Thanks for the incoming advice!