Bought a Vortex Venom red dot sight to mount on my Henry rifle and was having a heck of a time getting it sighted in. Finally figured out that it was changing the POI on it's own and randomly every couple of shots or so.
Thought Vortex was an American company, but upon closer inspection, my sight was made in the Philippines.
The Nikon ProStaff I had for years started having issues a couple of months ago as well. Decades of no issues, now suddenly 2 quality optics going out within a couple of months.
Posted a video from the range...