I had a VX-II 3-9x40 "go bad" on me. I sold it to EddyBo with full disclosure that I would pay for shipping to Leupold if it didn't work him.

He stuck it on a 280 AI and it tracked to 800 perfectly and guided a few way Sub MOA groups.

Turned out, it was me and my rifle that went bad.

Not trying to make a statement, just a story I thought was kind of funny, looking back at it.