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Rifle · SAAMI

6.8mm Remington SPC

6.8 SPC6.8x43mm6.8 Remington SPC

Special Forces-designed AR-15 cartridge offering dramatically better terminal performance than 5.56mm in short barrels..

Caliber
0.277″ · 7.036 mm
Introduced
2004
Case
Rimless
Parent
.30 Remington
Primary use
Military, Hunting, Self-Defense
Status
Active
Velocity2,450–2,900 fps
Energy1,130–1,575 ft·lb
Typical grains85 · 110 · 115 gr
Identity
Introduced
2004
Type
Rifle
Origin
United States
Inventor
U.S. Army Special Forces / Remington
Manufacturer
Remington / U.S. Special Forces
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
36 gr H₂O
Twist (typical)
1:11 to 1:12
Primer
Small Rifle
Case type
Rimless
Pressure & range
Max pressure
55,000 psi
Eff. range
500 yd
Max range
1000 yd
Recoil
9–13 ft·lb

Ballistics

Real trajectory computed from a representative load — Underwood Ammo ELD-M 110 gr, 2,550 fps, BC 0.253 G7 · 100 yd zero.

overlay up to 2
RangeVelocityEnergyDrop (in)Drop (MOA)
0 yd25491587-1.5″—
100 yd237913820.0″0.0
200 yd22151198-4.7″-2.2
300 yd20571033-16.5″-5.2
400 yd1904886-36.5″-8.7
500 yd1757754-66.1″-12.6
600 yd1615637-107.0″-17.0

Point-mass G7/G1 drag model, standard atmosphere — within ~2% of reference solvers to 1000 yd; real barrels and conditions vary. Open in Ballistic Compare →

Performance

Best for HuntingHornady Black110 gr · ELD-M · 2,550 fps · BC 0.253 G7Buy now →
Best for DefenseSpeer Gold Dot115 gr · GDHP · 2,625 fpsBuy now →
Best for TargetHornady Black110 gr · ELD-M · 2,550 fps · BC 0.253 G7Buy now →

Buy links open 6.8mm Remington SPC ammunition at Rivertown Munitions.

Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

CIP TDCC · verified
Measuremmin✓
Bullet ⌀7.040.277✓
Neck ⌀7.770.306✓
Shoulder ⌀10.210.402✓
Shoulder angle23°—✓
Base ⌀10.720.422✓
Rim ⌀10.720.422✓
Belt ⌀n/a
Rim thickness1.250.049✓
Neck length6.930.273≈
Case length42.841.687✓
Overall length57.402.260✓

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. 6.8mm Remington SPC is highlighted below.

Factory loads

In production — 73 active loads across 25 brands. Top 15 shown · see all 73 →.

BrandLoadGrainBulletFPSft·lbBC
HornadySuperformance SST110SST2,6251,6830.205 G7
Underwood AmmoELD-M110ELD-M2,5501,5880.253 G7
HornadyBlack110ELD-M2,5501,5880.253 G7
UnderwoodXtreme Hunter90Lehigh XH2,9001,680—
BarnesVOR-TX TTSX BT85TTSX BT2,8501,533—
BarnesVOR-TX95TSX2,8001,654—
NoslerBallistic Tip 85gr85BT2,8001,479—
RemingtonHog Hammer95TSX2,8001,654—
NoslerTrophy Grade AccuBond115AccuBond2,8002,002—
Cor-BonDPX85DPX2,8001,479—
Black HillsGold110TSX BT2,7501,847—
FederalAmerican Eagle115OTM BT2,7501,931—
BarnesVOR-TX95TSX BT2,7501,595—
DoubleTap110gr Barnes TSX110TSX2,7001,780—
DoubleTapDT Hunting110TSX BT2,7001,780—

Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.

Suitable powders

4 reloading powders listed for 6.8mm Remington SPC, fastest to slowest. Cross-reference in the finder →

H322H3352015IMR 3031
Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Firearms chambered in 6.8mm Remington SPC

12 models in the database chamber 6.8mm Remington SPC. Browse all →

Adams Arms P3 6.5 Grendel 18-inchSpringfield Armory SAINT Victor 6.8 SPC 16-inchSpringfield Armory SAINT AR-15 6.8 SPC 16-inchRuger Ruger American Rifle Ranch 6.8 SPCLWRC International LWRC IC-A5 Pistol 6.8 SPCRuger AR-556 6.8 SPC 18-inchLWRC International LWRC IC-SPR 6.8 SPCAdams Arms P3 6.8 SPC 16-inchAdams Arms P2 6.8 SPC 14.5-inchBarrett Firearms REC7 DI 6.8 SPC 16-inchLWRCI SIX8-A5 6.8 SPC 14.7-inchLWRC International LWRC IC-A5 6.8 SPC II

Lineage

Immediate parent
.30 Remington
Direct descendants (2)
.224 Valkyrie.22 Nosler
Family TreeOpen 6.8mm Remington SPC in the interactive cartridge family tree↗

Connected reference

Loads73 factory loads for 6.8mm Remington SPC↗Reloading4 suitable powders — cross-reference↗FirearmsFirearms in 6.8mm Remington SPC↗ToolCompare ballistics↗

History

Developed by U.S. Army Special Forces and Remington after perceived terminal performance issues with 5.56mm in short-barreled M4s. Uses the same bolt as 5.56mm but a larger case and heavier bullet. Never adopted as a standard military cartridge.

FAQs

What twist rate does 6.8mm Remington SPC use?
6.8mm Remington SPC typically uses a 1:11 to 1:12 twist rate.
What bullet diameter is 6.8mm Remington SPC?
6.8mm Remington SPC uses a 0.277″ (7.036 mm) diameter bullet.
Is 6.8mm Remington SPC still in production?
6.8mm Remington SPC is active; typical availability is common.
What is 6.8mm Remington SPC used for?
6.8mm Remington SPC is primarily used for military, hunting, self-defense.
What is 6.8mm Remington SPC based on?
6.8mm Remington SPC is derived from the .30 Remington case.
What are the best powders for 6.8mm Remington SPC?
Reloading powders commonly listed for 6.8mm Remington SPC include H322, H335, 2015, IMR 3031.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 73 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →