Competition for confident shot at maximum range comes with the inception of sniping as an art of marksmanship. Technical progress and regular wars contribute to its growth, but of course, this process can not be called uniform. Breakthroughs happen and there are periods of calm. One of these periods came to the seventies of the twentieth century, and was associated with the fact that the most common sniper caliber  of  that time – .30 – exhausted its possibilities for development.

Created in 1963, the .300 Winchester Magnum cartridge was the culmination of the .30 caliber development. It gave a sniper