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No free man shall ever be de-barred the use of arms. The strongest reason for the people to retain their right to keep and bear arms is as a last resort to protect themselves against tyranny in government."

- Thomas Jefferson, of Virginia, Proposed Virginia Constitution, 1776

 

.280 Remington

(7mm Express Remington)

Remington introduced the  .280 Remington, also known as the 7mm Express Remington, in 1957 for the Remington model 740, 760, 721 and 725 rifles.[1] Remington based the .280 on the .30-06 Springfield necked down to accept 7mm (.284-in) bullets increased the neck by .050-in (1.27mm).

.280 Remingotn rifle cartridge a.k.a.  7mm Express Remington

.280 Remington Cartridge (a.k.a. 7mm Express Remington)

Remington released the .280 Remington cartridge some 32 years after the .270 Winchester and with no particular advantage over its predecessor, the .280 Remington had somewhat unspectacular sales.  Remington attempted to increase excitement and sales in 1979, by renaming the cartridge 7 mm Express in an attempt to increase sales. This resulted in people confusing it with the 7 mm Remington Magnum and Remington eventually changed the name back to .280 Remington in 1981.[2]

The .280 Remington develops energy nearly equal to the .30-06 Springfield, but with lighter bullets having a better ballistic coefficient. Thus, the .280 Remington boasts a better trajectory and retains more energy downrange. However, the .30-06 produces more energy than the .280 with bullets heavier than 180-grains.

SAAMI puts the pressure limit for the .280 Remington at 60,000 PSI, 50,000 CUP.[1]
Most American rifle and ammunition manufacturers catalogue the .280 Remington, but the .280 Remington lacks popularity in Europe, where it competes with the nearly ballistically identical 7 x 64mm. When compared to the .280 Remington the 7 x 64mm has a slightly higher maximum allowed chamber pressure and as a European 7mm cartridge has a slightly larger bore. European 7mm cartridges all have 7.24mm (0.285-in) grooves Ø diameter. American 7mm cartridges have 7.21mm (0.284-in) grooves Ø.

.280 Remington

Type                                                            Rifle
Place of origin                                         USA

Production History

Designer                                                    Remington
Designed                                                   1957
Manufacturer                                          Remington
Produced                                                  1957-Present
Variants                                                    7mm Express Remington

Specifications

Parent case                                             .30-06 Springfield
Bullet diameter                                     .2845 in (7.23 mm)
Neck diameter                                       .315 in (8.0 mm)
Shoulder diameter                              .441 in (11.2 mm)
Base diameter                                        .470 in (11.9 mm)
Rim diameter                                         .473 in (12.0 mm)
Case length                                              2.540 in (64.5 mm)
Overall length                                         3.330 in (84.6 mm)
Rifling twist                                             1-9"
Primer type                                             Large rifle

Ballistic Performance

Bullet weight/type                     Velocity(MV)                         Energy(ME)
120 gr (7.8 g) SP                                    3,112 fps (949 mps)                        2,581 ft·lbf (3,499 J)
140 gr (9.1 g) HP                                   2,839 fps (865 mps)                        2,506 ft·lbf (3,398 J)
154 gr (10.0 g) SP                                  2,825 fps (861 mps)                        2,730 ft·lbf (3,700 J)
168 gr (10.9 g) HPBT                           2,723 fps (830 mps)                        2,767 ft·lbf (3,752 J)
175 gr (11.3 g) SP                                    2,681 fps (817 mps)                         2,794 ft·lbf (3,788 J)

Test barrel length: 24"
Source: Accurate Powder [1]

[1] ".280 Remington data" from Accurate Powder
[2] The Versatile 280 at Outdoor Life

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I recently ordered a couple of new guns from my local gun shop. It may be a while until they come in, from what I am told. I ordered a 3 inch Ruger SP101 in the new .327 Federal Magnum caliber and a Ruger Hawkeye African in the .375 Ruger caliber. The seller tells me that the SP 101 in that make up is just now trickling out of the factory and that distributers are having a hard time stocking them for retailers, so I may be waiting a while...click for more.

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