Winchester was one of the leading designers of [[rifle]] [[ammunition]] since its founding in 1866. They are responsible for inventing some of the most popular [[cartridge (firearms)|cartridges]] in the [[history of firearms]]. These include the .30 WCF ([[.30-30]]), the [[.50 BMG]], the [[.270 Winchester]], the [[.308 Winchester]], the [[.243 Winchester]], the .22 WMR ([[.22 Magnum]]), and the [[.300 Winchester Magnum]]. The engineers from [[Browning]] and Winchester co-developed the Browning .50 caliber [[machine gun]] during [[World War I]]. Winchester's engineering team invented the [[.50 BMG]] [[caliber (firearms)|caliber]] ammunition used by both the Browning machine gun and modern [[bolt-action]] [[sniper rifle]]s such as the [[Barrett M99]]. | Winchester was one of the leading designers of [[rifle]] [[ammunition]] since its founding in 1866. They are responsible for inventing some of the most popular [[cartridge (firearms)|cartridges]] in the [[history of firearms]]. These include the .30 WCF ([[.30-30]]), the [[.50 BMG]], the [[.270 Winchester]], the [[.308 Winchester]], the [[.243 Winchester]], the .22 WMR ([[.22 Magnum]]), and the [[.300 Winchester Magnum]]. The engineers from [[Browning]] and Winchester co-developed the Browning .50 caliber [[machine gun]] during [[World War I]]. Winchester's engineering team invented the [[.50 BMG]] [[caliber (firearms)|caliber]] ammunition used by both the Browning machine gun and modern [[bolt-action]] [[sniper rifle]]s such as the [[Barrett M99]]. |