Another thing to think about with Maximum effective range per the military is that it boils down to the average shooter in a certain weather condition. So it is artificially lower than a good shooter in good conditions can shoot. For example both the Army M24 and the USMC M40 sniper rifles have a listed max effective range of 800 meters. Yet both rifles have many many kills out past that range. The record M24 shot is 1250 meters, or over 150% of it's effective range.