I have a Marlin 1894 in 45LC. The magazine tube is full length, so I need a barrel band swivel that will work around this tube. The tubes diameter is .650". I can't find anything to fit. The Brownells version is for .775-.825. And Uncle Mikes has them from .700 and up.

Any help?

0.025 mild steel shim?

Will this set do it?

Or maybe this one?

Thanks..........That will do it!