I bought this product and am very pleased with the quality of workmanship. Perfectly matched to my sniper Well MB 05. I Have made several tests and measured objects and distance in meters correspond to reality.
For measuring the distances always use the x10 zoom, and uses the following formula:
Mesured object in mm (milimeters) , divided of the number of mil-dots for example 1500 mm wide window, divided in 7 mil-dots (because it fits betwen 7 mil dots) = 214 meters. I have made several test and the reticle is ok. Best Regards! N. Yotov - Bulgaria.