.338 Lapua Magnum
In 1983, Research Armament Co. in the U.S. began development of a new, long-range sniper cartridge capable of firing a 250-grain, .338-inch diameter bullet at 3,000 fps. After preliminary experiments, a .416 Rigby case necked down to .338-inch was selected. Brass Extrusion Labs Ltd. (then of Bensenville, Illinois), made the cases, Hornady produced bullets, and Research Armament built the gun under contract for the U.S. Navy. Subsequently, Lapua and Norma have put this cartridge into production. It is now a CIP standard chambering; since CIP and SAAMI have reciprocal agreements in place (at least in theory), that makes this a standard SAAMI chambering, as well. You have to burn a lot of powder to launch a 250-grain bullet at 3,000 fps. The .338 Lapua Magnum, as it…