The.284 Winchester is a cartridge that has enjoyed a resurgence due to interest from long-range competitive shooters. Winchester has continued to produce brass cases for this since 1963. Introduced by Winchester in 1963, the.284 Winchester was designed to achieve.270 Winchester and.280 Remington performance from the new Winchester Model 100 autoloader and Winchester Model 88 lever-action rifles.
For open-country hunting of deer and pronghorn, the .284 Winchester loaded with the Speer 130-grain (8.4 g) spitzer at 3,100 ft/s (940 m/s) is adequate, even in a short-action rifle. Larger game calls for bullets weighing from 150 to 160 grains (10 g).
These ballistics show that the .284 Winchester is as good as the .280 Remington with the same weight bullet. The short mountain rifles for which the .284 Winchester seems best suited seldom come with 24-inch barrels. Aside from Winchester, no other major company has ever loaded factory ammunition for the .284 Winchester.