I used to think that the lack of a zero stop was the only thing keeping the Sightron SIII from being the perfect scope for a LR hunting rig.
Now it's available as the SIII PLR 6-24×50 Zero-Stop (SFP) - just under 2K in NZ.
Difficult to find a s/h zero-stop SIII model but if you do expect to pay around $1250.
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