Rifle · SAAMI
6.8 TVC
The 6.8 TVC (True Velocity Composite) is the first composite-cased cartridge SAAMI has standardized.
- Caliber
- 0.277″ · 7.04 mm
- Introduced
- 2022
- Case
- Rimless
- Primary use
- Military, Target
- Status
- Active
- Introduced
- 2022
- Type
- Rifle
- Origin
- United States
- Manufacturer
- True Velocity
- Standard
- SAAMI
- Status
- Active
- Availability
- Limited
- Twist (typical)
- 1:8
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 65,000 psi
- Eff. range
- 800 yd
Introduced by True Velocity
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 6.8 TVC, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.
Open in Ballistic Compare- Parent case
- —
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
SAAMI · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 7.04 | 0.277 | · |
| Neck ⌀ | 7.87 | 0.310 | ~ |
| Shoulder ⌀ | 11.71 | 0.461 | ~ |
| Shoulder angle | 30° | — | ~ |
| Base ⌀ | 11.96 | 0.471 | · |
| Rim ⌀ | 12.01 | 0.473 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.37 | 0.054 | · |
| Neck length | 6.40 | 0.252 | ≈ |
| Case length | 51.18 | 2.015 | · |
| Overall length | 71.12 | 2.800 | · |
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. 6.8 TVC is highlighted below.
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.
Connected reference
History
Developed under the U.S. Army's Next Generation Squad Weapon (NGSW) program, where True Velocity's composite-cased 6.8mm fed the RM277 rifle alongside LMT and General Dynamics. The NGSW contract went to SIG Sauer's hybrid-cased 6.8x51mm (.277 Fury) in 2022, but True Velocity carried the 6.8 TVC into the commercial market as the first SAAMI-accepted composite-cased round, with conversion uppers and rifles from makers including LMT, Beretta, and Daniel Defense. Its external envelope shares the .308 Winchester head and overall length.
FAQs
- What twist rate does 6.8 TVC use?
- 6.8 TVC typically uses a 1:8 twist rate.
- What bullet diameter is 6.8 TVC?
- 6.8 TVC uses a 0.277″ (7.04 mm) diameter bullet.
- Is 6.8 TVC still in production?
- 6.8 TVC is active; typical availability is limited.
- What is 6.8 TVC used for?
- 6.8 TVC is primarily used for military, target.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →