IMHO, some engineered jig takes the validity out of it. The way the drop test is structured is literally perfect, and obviously repeatable.Wouldn't it put this MDS guy in his place if we eliminate the variables? If UM, SRS or someone would machine a jig that replicated an average rifle and took variables out like action screws and the scope mounts he mentioned, validity would become more indisputable. Obviously there would be scope mounts but something bomber and an integral part of the jig. Next, we could take the drops to a more consistent level by adding a platform that duplicates the drop consistently every time. The same would apply to riding around in the same vehicle at the same temperature or whatever makes it consistent. Finally, the scope tracking and zero retention would be measured on a collimator while still in the jig taking the shooter and ammunition out of the equation such as the Nightforce version seen here. What would their argument be then?