I have one on my 7mm Weatherby Magnum. Holds a zero, repeatability is fine. Had my rifle on the rest sitting on the bench and the rifle flopped over onto the windage knob. No change. Zeroing your knobs doesn't always work. I ended up halfway between 0 and 1. They are releasing components to correct this at no charge for older models. Clicks are in 1/4 moa and I counted 198 clicks to the top of adjustment. I have not had a chance to verify the acuracy of the clicks yet. I have the fixed 10 X with the MP-20 reticle. I love this reticle. It's similar to the IOR MP-8. The glass....is not the greatest. Kind of grey compared to my friends Leupold Rifleman of comparable cost. Good enough to get the crosshairs on a whitetail at 9:30 am with no snow on the ground at 498 yds. Not bad for $400 CDN. Warranty is handled through the dealer you purchased from.