Hi all,
Mounted the scope on my Sako tonite,, and it made me think whether other people do the same as me to prevent ring marks.
I have done the following for years, and it works well, and I've never had ring marks on my scopes.
I sometimes swap scopes around, and the solution is simple.
I use the yellow (gas) thread tape.
Just be careful where you start and finish,, cut with scissors rather than just pulling till it separates,, and preferably only one to two wraps.
It squashes out well, and never seems to affect sighting in,, but is enough to prevent ring marks on your scopes.