7mm BR Remington

The 7mm BR is based on previous Remington benchrest cartridges 6mm BR Remington and the.22 BR Remington cartridges. These cartridges in turn trace their origin to.308 Winchester via the.308×1.5-inch Barnes cartridge. The 7mm BR was designed by merely necking up the pre-existing 6mm BR Remington to accept a.28 caliber (7 mm) bullet. The cartridge is capable of developing 2200 ft/s with a 139 gr bullet or 2100 ft/s with a 154 gr bullet in a 15 in barrel. The 7mm BR Remington, however, was conceived as a competitive handgun cartridge for Metallic Shooting. It has enough energy and momentum to knock down targets out to 200 yd and has had some success in that particular shooting discipline. Later it was also adopted in Benchrest shooting by Remington who introduced the X-40 rifle in that chambering. At one time Remington produced ammunition and cases for this cartridge. They continued to supply the 7mm BR Remington case through to the early 1990s. Today the cartridge is considered obsolete and no major ammunition manufacturers produce loaded ammunition and Remington no longer manufactures firearms chambered for this cartridge. In April 2020 Peterson's began producing properly headstamped brass. Some small specialty ammunition manufacturers produce ammunition for the cartridge.

• Name — 7 mm BR Remington • Origin — United States • Type — Rifle • Designer — Mike Walker • Design Date — 1978 • Manufacturer — Remington • Production Date — 1978–1998 • Parent — 6mm BR Remington • Case Type — Rimless, Bottleneck • Bullet — 0.284 • Neck — 0.315 • Shoulder —.4598 • Base —.473 • Case Length — 1.520 • Primer — small rifle • Max Cup — 52,000