I also have a Vortex 4-16x44 Diamondback Tactical, 25 MRAD of elevation. It's on a Ruger LRP. I can watch bullets drop into a gong at 100m with it. Haven't tried it further than that. It's a third of the price, currently $599 at Bullseye North. Both are FFP, the Vortex says it has zero reset, I'm guessing that's not zero stop. I haven't fired mine in a while and can't remember. Do the YouTube thing for reviews.