@35WhelenAI
I missed the last part of your question. Other scopes I've used that wouldn't hold zero.
A number of Vortex PST scopes had some of the worst scope failures I've personally seen. Huge shifts in zero and inconsistent adjustments compared to what was dialed.
The Vortex Gen III razor I tested (actually two different scopes) wouldn't consistently hold zero.
Sig scopes have been hit and miss for me.
Leupold Vari X III, VX3, VX5, VX6, Mark 5.
A few different Zeiss scopes.
The Zeiss LRP 3 seems to work correctly, and
@Formidilosus has almost 3k rounds on the one I sent him to test.