I wad wondering if anybody had used these before. I found a good deal on a scope and rings 30mm. My one piece Warne scope mount is 1 inch. I found some inserts for 10.00.
Do the inserts work good or waste of time
Perhaps it's just me mis-understanding your wording - 30mm is larger than the 1-piece Warne 1" and inserts are normally to allow for a 30mm "mount" to utilize a 1" diameter scope.
I have several older 1-piece 30mm mounts that came with 1" inserts, but sorry I have never used the inserts to tell if they are good to go.
ps - I have become a fan of AERO Precision Ultra-Light weight mounts (for ARs) and buy them for the diameter scope I'm mounting.