I’ve had inconsistent tracking in Swaro Z3s, a Z5 and a Z6. Have had a Z3 that would not hold zero as well. Glass has been excellent in most but not all. Swaro service has been outstanding.

My experience is the old VARI-X- III were far more likely to hold zero than the subsequent models. Tracking has always been a joke on the older models…50/50 on the newer ones. I’m alway looking for older ones for set and forget situations.

For dialing, I’ve migrated to NF SFP scopes as I’ve grown weary of scope roulette on my hunting rigs.