As posted above, the Weaver rings don't work on the Tikka base. A friend of mine has the T3 Lite and he used the Tikka rings, w/his .300 win mag, they don't seem so solid (had to re-zero after only 4 trips to the range). I got the Talley rings for my T3 Lite, they seem O.K. so far (2 trips to range) but I wish the "low" was a bit lower. I mounted a 33mm obj. scope. Considering switching to the Leupold bases with xlow rings, not sure yet though.