Thread: Whats the bees knees? Chrony

Originally Posted by Moutere

They use two electro magnetic sensors, measuring the interruption of the EM fields by the metallic bullet. .

Also been using mine a lot lately for 22RF ammo tests. (unfortunately my EM332 loves the expensive SK Subs!) The MS detects lead bullets quite happily as well. You just need to change the bullet type to "slug" and take care to get the gap between the sensor and the bullet path to a minimum and away it goes.