Doesn't hold zero - Yukon Mini Varmint Hunter NVRS Titanium 1.5x42 Night Vision Rifle Scope

As other reviewers said, this won't hold zero on much more than a 22. Spent an hour going back and forth, up and down, and could not get a consistent grouping. I know it wasn't my fault because I have no problems zeroing my other scopes. The optics are acceptable for my purposes at close range shooting, although visually there is no magnification that I can tell. It may be good for smaller caliber guns. Returning it promptly and am very disappointed.