I have recently turned into a rimfire nerd and have been trying alot of different scope rings on different rifles. I am determined to use a groove ring mount when possible to keep things simple and costs down. Most of them seem to not be a perfect solution. One of the 1st I tried was BKL. Seemed to be a perfect solution, until they slipped on a 11mm groove using 22wmr. They seem fine for 22LR but very high in most cases. Tried Talley, they dont slip the groove with 22wmr, but are expensive and heavy. The old Weaver with slotted screws on one side only of the cap seemed to work better than expected. Warne 721 rings seem to hold tight using 22wmr and are available in just about every sporting goods store locally, but low is not offered. Warne vapor low seem to be my favorites for 22LR. Burris are not sold locally where I live, and Leupolds just seem to expensive.