7mm BR Remington

The 7mm BR Remington, commonly called the 7mm BR or the 7mm Benchrest Remington in long form, was a cartridge developed by Remington for the Remington XP-100 single-shot bolt-action handgun. The cartridge was developed for the Unlimited Class in the sport of Metallic silhouette shooting. Later it was introduced in the Remington Model XB-40 single-shot bolt-action rifle, which was specifically designed for the benchrest shooting community.^[1]

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 2,200 ft/s (670 m/s) with a 139 gr (9.0 g) bullet or 2,100 ft/s (640 m/s) with a 154 gr (10.0 g) bullet in a 15 in (380 mm) barrel.^[1]

As a hunting cartridge it is adequate for smaller deer species and ranges under 150 yd (140 m). With lighter bullets, this cartridge makes an excellent varmint or predator cartridge. The 7mm BR Remington, however, was conceived as a competitive handgun cartridge for Metallic Shooting.^[1] It has enough energy and momentum to knock down targets out to 200 yd (180 m) and has had come 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 though to the early 1990s. Today the cartridge is considered obsolete and no one produces loaded ammunition and Remington no longer manufactures firearms chambered for this cartridge.

Footnotes

1 2 3 Georgi (Ed.), Todd (1991). Hornady Handbook of Cartridge Reloading 4th Edition Vol I. Grand Island, Nebraska: Hornady Manufacturing Company. p. 648.

Cartridges derived from the .250-3000 Savage or its derivatives (including wildcats)

First generation

Second generation

Based on .300 Savage	.308 Winchester

Based on .22-250 Remington	.22-250 Ackley Improved

Third generation

Based on .308 Winchester	.243 Winchester .260 Remington 7mm-08 Remington .307 Winchester .308×1.5-inch Barnes 7.62×51mm NATO .338 Federal .358 Winchester

Fourth generation

Based on .243 Winchester	.243 Ackley Improved

Based on .307 Winchester	.356 Winchester

Based on .308×1.5-inch Barnes	.22 BR Remington 6mm BR 7mm BR Remington .30 BR

Remington Firearms and Cartridges

Rifles

Bolt-action	JuniorTarget 521TL Remington-Keene rifle M1903 Springfield rifle Model 5 Model 6 Model 7 Model 30 Model 34 M40 Model 241 Model 341 Model 504 Model 511 Model 512 Model 513 Model 521 Model 580 Model 581 Model 582 Model 600 Model 660 Model 673 Model 700 Model 710 Model 720 Model 721 Model 722 Model 725 Model 770 Model 788 Model 798 Model 799 M24 Sniper Weapon System M2010 Enhanced Sniper Rifle Modular Sniper Rifle R5 Remington Gas System

Pump-action	Model Six Model 14 Model 121 Model 141 Model 572 Model 572 Fieldmaster Model 760 Model 7600 Model 7615

Semi-automatic	Nylon 66 Model Four Model 8 Model 24 Model 522 Model 552 Model 597 Model 740 Model 742 Model 7400 Model 750 Model R-15 Model R-25 RSASS

Automatic	Adaptive Combat Rifle

Single shot	Rolling Block

Shotguns

Pump-action	Model 10 Model 17 Model 29 Model 31 Model 870 Model 887

Semi-automatic	Model 11 Model 11-48 Model 58 Model 878 Model 1100 Model 11-87 Model SP-10 SPR 453

Break-action	SPR 100 SPR 310

Handguns

Semi-automatic	1911 R1 Model 51 R51

Revolver	Model 1858 Model 1875 Model 1890

Derringer	Model 95 Rider Single Shot Pistol Zig-Zag Derringer

Other	XP-100

Cartridges

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7mm BR Remington

See also

Footnotes