As for tracking, I have only used CDS, however I’ve not seen an issue with adjustment or return to zero yet.
Have you ever done a tracking test on any of them? A legitimate tracking test, dialing In between shots, up down, return to zero?
You might be surprised.
As for loss of zero? I have close to a dozen leupolds and for some bizzare reason have not encountered these massive issues. Funny that I don’t see them reported on here very often either.
So you’ve NEVER checked a rifle before the season started and made an adjustment? NEVER checked a zero after a missed shot and found it needed a tweak? NEVER took a shot after dialing for distance at a rock where you “must have pulled that one, let me try again. SEE, that worked. Great glass.”
NEVER tapped your turret after making a zero adjustment, before firing a shot to see where it went?
NEVER had to use a target with easily viewable red and white lines, counted clicks, fired a shot, checked, moved some more? Fired again, adjusted again?
Better hang onto those Leupolds, they are extraordinary specimens of tracking and repeatability. OR, your abilities and/or rifle platform aren’t good enough to realize the difference.
The lightbulb moment for me was having a buddy spin elevation and windage dials on a GOOD scope mounted on a good rifle with good dope unknown amounts, firing one shot at 100m, measuring the difference via the reticle, making the adjustment, then making the next shot land on a 600 yard beer can.
Since switching out for good scopes, zeroing a rifle is at MOST, 2 shots. One to find POI relative to POA and making corrections, and one at 6/7/8/900 yards to check dope.
It was a tough transition going from glass that looked good on a rifle (a dozen plus 3.5-10’s that sit and gather dust on shelves now) to glass that WORKS, but it was a real eye opener.