Vortex does realise there can be a problem with wear in dialling long shots with image-movement scopes - but the only scope I know they employ their hardened-steel bearing points in is the Razor 5-20x50.

Frankly, all this dialling long shots is folly in my opinion, esp. if hunting rather than assassinating game species. From a practical POV, I'd rather use stadia because you can't forget to wind them back and they don't constantly twist-stress your erector spring(s).

That scope is discontinued.They have a PST 2 now. Also it is a First Focal Plane?

It would appear you can have either FFP or SFP in a couple of powers. If you want it to really take punishment, get the one with the FFP reticle. Makers say their SFP scopes will never shift zero between powers, but they would say that, wouldn't they?

The problem is that when the reticle is in the rear, SFP, position, your view of the target comes through the erector tube first; if any slop ever develops in the power scroll, the target position can be moved as you change magnifications.

With the reticle in front of the erector tube the view of it will always be locked together with that of the target.

FFP also lends itself to range-finder reticles, without winding them to the absolute highest power every time.

The only place I would want SFP would be on a light-kicking .22 used for shooting small and distant targets.