Further Information

What really sets the newer versions of the ART system apart from the military ART models of the 1960's is the cam system which automatically allows for the trajectory of the round being shot.  Let's face it, the original ART scopes were set up to allow tactical shooters to keep hits on a man-sized target out to around 600 yards ... shooting rifles chambered for the U.S. military rifle cartridges of the time - the 5.56x45mm NATO (.223 Remington) and the 7.62x51mm NATO (.308 Winchester).

The most feared soldier of the Civil War was the Sharpshooter.  Today, we simply call them snipers.  Thanks to advances in rifle...bullet...and optical sight technology during the 1840's and 1850's, the dreaded Sharpshooter's rifle could reach out and precisely hit targets much farther than ever before possible.