6.8mm Remington SPC

Introduced 2004CIP standard

Also known as 6.8×43mm Remington SPC: the same cartridge under different names, all of which find this page.

Dimensions and pressure

Generated from the schema, like every specification table on this site, so a figure recorded on this entry cannot be missing from the table.

Identity

Designed by: not recorded
Introduced: 2004
Production: not recorded
Standards body: C.I.P.
Case type: Rimless
Case shape: Bottleneck

Dimensions

Bullet diameter: 7.06 mm0.2780 insource
C.I.P. G1, maximum bullet diameter.
Bore diameter: not recorded
Case length: 42.84 mm1.687 insource
C.I.P. L3, maximum case length.
Overall length: 57.4 mm2.260 insource
C.I.P. L6, maximum cartridge overall length.
Rim diameter: 10.72 mm0.4220 insource
C.I.P. R1.
Neck diameter: 7.77 mm0.3059 insource
C.I.P. H2.
Base diameter: 10.72 mm0.4220 insource
C.I.P. P1.

Pressure

Maximum pressure: 405 MPa58,740 psisource
C.I.P. Pmax 4050 bar; 1 bar = 0.1 MPa exactly.
Pressure standard: C.I.P.

SAAMI and C.I.P. measure pressure differently and their figures are not interchangeable, which is why the body is always named beside the figure.

Loads

Velocity is recorded per barrel length as published. A gun page interpolates between these points and never projects beyond them.

115 gr Full Metal Jacket

Bullet mass: 7.45 g115.0 grestimated
115 gr FMJ factory load, cited by the Wikipedia infobox to an SSA (ssarmory.com) product page.
Cartridge mass: not recorded
Bullet type: Full Metal Jacket
G1 BC: not recorded
G7 BC: not recorded

Sourced velocity by barrel length
Barrel	Velocity
406.4 mm16.00 in	784.9 m/s2,575 fps

120 gr SST

Bullet mass: 7.78 g120.1 grestimated
120 gr Hornady SST factory load, cited by the Wikipedia infobox to a Hornady product page.
Cartridge mass: not recorded
Bullet type: SST
G1 BC: not recorded
G7 BC: not recorded

Sourced velocity by barrel length
Barrel	Velocity
406.4 mm16.00 in	749.8 m/s2,460 fps

110 gr Sierra Pro Hunter

Bullet mass: 7.1 g109.6 grestimated
110 gr factory load, via the Wikipedia infobox.
Cartridge mass: not recorded
Bullet type: Sierra Pro Hunter
G1 BC: not recorded
G7 BC: not recorded

Sourced velocity by barrel length
Barrel	Velocity
406.4 mm16.00 in	762 m/s2,500 fps

85 gr Barnes TSX

Bullet mass: 5.5 g84.88 grestimated
85 gr Barnes TSX, a factory "tactical" SSA load, via the Wikipedia infobox.
Cartridge mass: not recorded
Bullet type: Barnes TSX
G1 BC: not recorded
G7 BC: not recorded

Sourced velocity by barrel length
Barrel	Velocity
406.4 mm16.00 in	935.7 m/s3,070 fps

Chambered in

Computed from every entry that lists this cartridge. Nothing here is hand-maintained.

No entry on the site is chambered in it yet.

The US Special Operations Command worked with Remington Arms and the US Army Marksmanship Unit between 2002 and 2004 to develop a cartridge whose downrange ballistics held up better than 5.56×45mm NATO’s when fired from the short barrels common on carbines, while still fitting the magazine and bolt-face dimensions of the existing M16 rifle family and keeping recoil close to what a 5.56mm carbine already produced. The case is based on the older .30 Remington round, shortened and necked down to a .277 bullet so it would feed from a modified AR-15 magazine.

Its dimensions are governed by a C.I.P. standard adopted in 2006, two years after the cartridge’s introduction, and every dimensional figure here comes from that standard. The four load rows are factory ammunition figures the cited Wikipedia article attributes to SSA and Hornady product listings rather than to a document consulted directly here, so they are recorded as estimated pending an independent check of each manufacturer’s own page.

No ballistic-coefficient figure has been sourced for any of its four loads.

References

6.8mm Remington SPC · 1366782264 · read 2026-09-09
C.I.P. TDCC datasheet — 6,8 mm Rem. SPC · 2006-05-16 · read 2026-09-09

Last verified 2026-09-09 · review status: agent-populated