My question is, is the problem that when dialing for range they don't do so reliably/return to zero? Or do they fail to hold zero period?
I ask because I'm looking hard at a fixed 6X the intent being to zero and shoot/hunt. No dialing wanted. Set and forget.
I have had many issues with their relatively entry level variables such as VX-I and VX-II, VX-2, etc. not holding zero.
The FX-III and FX-3 as well as one FX-II have held zero just fine for me. Their Ultralight 2.5x20 has been a good scope for me too, on a couple different rifles that get banged around on horses, boats and snow machines.
No comment on dialing or RTZ, or their higher end variables.