I'm using these, the Sako 1-pc Optilock Ringmounts. They are lower than the x-tra low 2-pc Optilocks, and are cleaner with less bulk. They require a Torx key to loosen, but Sako published that they are designed to be removed and replaced without loss of zero. They have a solid fit with a positive stop. I much prefer these over the bulkier 2-pc version.
I'll be running this scope, 1.1-4 power.
Good Luck