I have an SIII 16x. I really like it. Always tracks and returns to zero. Mine has the mildot reticle with 1/2 mil hash marks. I wish they offered that reticle in their other scopes. Mine is on a 300 wsm
and I have had no problems. Shot a deer at 589 this year along with some 3-400 yard coyotes. I have had a number of other scopes some costing more than the sightron and I don't see myself buying anything else in the future. This scope replaced an elite 4200 and it is brighter.