I recently mounted a Riton 1 CONQUER 6-24×50 and am very happy with it. Tenda has them on for $239.99. Lots of features for this type of shooting: Very clear optics, fine, uncluttered retical that is very fine and will not obscure targets; 0 reset for elevation, 0 return for windage; tools needed to set this up come with it; paralax adjustment; fast focus; and lots of adjustment for long range without using a canted rail.
The only drawbacks (and they are not really a problem for me): I had to remove the throw knob as it was interfering with the bolt handle a some magnifications, but it came with a threaded plug for the hole; narrow field of view at high magnifications; also not a problem of they type of shooting I am doing.
I am getting older and have recently developed cataracts; with this scope at 100 yards it is easy for me to see the bullets strike the targer; no need for a spotting scope.
It also tracks perfectly; returning to zero each and every time. I originally sighted it in at 20 yards then took it to the outdoor range; fired three shots, extimated the distance to center zero based on target rings, diled it up the appropriat number of MOAs, fired another group and was on the bulseye. Shot a few groups that day at <1". The rifle is a CZ 455 Super Match.