Nikon P-308 4-12x40 Riflescope, Matte, BDC 800 The BDC 800 reticle was developed specifically for the trajectory of the 308 win/7.62 NATO round with 168-grain hpbt match bullet at 2680 feet per second Multiple layers of anti-reflective compounds on every Glass surface provide bright, vivid pictures and optimum light transmission from dawn to dusk The p-308, like all of Nikon riflescopes, is optimized for Use with Nikon spot on Ballistic match Technology