Home › Browse Calibers › 6.8mm Rem. SPC
Common uses: Tactical, Hunting
| Type | rifle (centerfire) |
| Typical load | 115gr Federal American Eagle TMJ |
| Muzzle velocity | 2675 fps |
| Muzzle energy | 1828 ft-lb |
| Published G1 ballistic coefficient | 0.378 |
| Case length | 42.5 mm |
| Overall length | 57.4 mm |
| SAAMI max pressure | 55000 PSI |
| Common twist rate | 1:11" |
| Range (yd) | Velocity (fps) | Energy (ft-lb) | Drop (in) |
|---|---|---|---|
| 0 | 2675 | 1827 | -1.5 |
| 100 | 2439 | 1519 | 0 |
| 200 | 2215 | 1252 | -4.4 |
| 300 | 2004 | 1025 | -15.8 |
| 400 | 1804 | 831 | -36 |
| 500 | 1620 | 670 | -66.9 |
At 1,000 yards, 6.8mm Rem. SPC (115gr at 2675 fps, 100 yd zero, standard conditions) has a modeled come-up of about 47.2 MOA / 13.7 MIL, retaining 1021 fps (subsonic).
| Range (yd) | Velocity (fps) | State | Drop (in) | Elev (MOA) | Elev (MIL) |
|---|---|---|---|---|---|
| 300 | 2004 | Supersonic | -15.8 | 5.0 | 1.47 |
| 400 | 1804 | Supersonic | -36.0 | 8.6 | 2.50 |
| 500 | 1620 | Supersonic | -66.9 | 12.8 | 3.72 |
| 600 | 1452 | Supersonic | -111.2 | 17.7 | 5.15 |
| 700 | 1306 | Transonic | -171.9 | 23.5 | 6.82 |
| 800 | 1184 | Transonic | -253.1 | 30.2 | 8.79 |
| 900 | 1090 | Subsonic | -359.2 | 38.1 | 11.09 |
| 1000 | 1021 | Subsonic | -494.5 | 47.2 | 13.74 |
Extended predictions beyond 500 yards are modeled from the same G1 engine — useful for initial DOPE, but outside the 500-yard manufacturer-table validation audit. Confirm with observed DOPE, especially near transonic.
A retained-energy reference only — not a shoot/don't-shoot distance. Real effective range depends on your accuracy, shot placement, bullet construction, and conditions. The ~1,000 ft-lb (deer-sized) and ~1,500 ft-lb (elk-sized) figures are commonly cited rules of thumb, not standards.
Your barrel, ammunition lot, and conditions will differ — always verify against the manufacturer's data and your own rifle.
The 6.8 SPC is a hard-hitting middle ground for the AR-15, firing a heavier .277-inch bullet that delivers more energy on target inside a few hundred yards than the 5.56 without requiring a large-frame rifle. It was never adopted to replace 5.56 NATO in general U.S. military service, and converting an AR-15 to shoot it takes a dedicated bolt, barrel, and magazines rather than just a barrel swap. Today it is a popular deer and hog hunting round that trades some magazine capacity for terminal punch.
The 6.8mm Remington SPC grew out of a joint effort between the U.S. Army Marksmanship Unit and Remington in the early-to-mid 2000s, with Master Sergeant Steve Holland and Army Marksmanship Unit gunsmith Chris Murray credited with much of the development work.
Run this cartridge in the ballistic calculator · Compare it against another cartridge · How this data is produced