6.8 SPC Ballistics
Developed by US Army Marksmanship Unit and Remington for improved close to mid-range performance over 5.56. Heavier bullet, more energy, good hunting cartridge. Requires dedicated bolt and magazines.
Cartridge Specifications
Common Bullet Weights and Types
Muzzle Velocity by Barrel Length
Muzzle Energy by Barrel Length
Bullet Drop Table
Values in inches. 16-inch barrel reference data. Positive values rise above line of sight, negative values fall below.
| Load | Zero | 100 yd | 200 yd | 300 yd | 400 yd | 500 yd |
|---|---|---|---|---|---|---|
| 85 gr TSX | 200 yd | 1.5 | 0 | -7.2 | -21 | -43 |
| 110 gr BTHP | 200 yd | 1.8 | 0 | -7.8 | -22.5 | -45 |
| 115 gr OTM | 200 yd | 1.9 | 0 | -8.2 | -23.5 | -47.5 |
Wind Drift at 10 mph Crosswind
Drift in inches at a 90 degree full value wind. Estimated from muzzle velocity and G1 ballistic coefficient.
| Load | 100 yd | 200 yd | 300 yd | 400 yd | 500 yd |
|---|---|---|---|---|---|
| 85 gr TSX | 6 | 12 | 18 | 24.1 | 30.1 |
| 110 gr BTHP | 5.6 | 11.3 | 16.9 | 22.5 | 28.1 |
| 115 gr OTM | 5.6 | 11.2 | 16.8 | 22.5 | 28.1 |
Effective Range by Application
Barrel Twist Rate Recommendations
Published Load Data
| Weight | Type | Barrel | MV (fps) | ME (ft-lb) | BC (G1) | Source |
|---|---|---|---|---|---|---|
| 85 gr | TSX | 16 in | 2,850 | 1,533 | 0.31 | Barnes 6.8 SPC 85gr TSX published load data |
| 85 gr | TSX | 18 in | 2,910 | 1,598 | 0.31 | Barnes 6.8 SPC 85gr TSX published load data |
| 110 gr | BTHP | 16 in | 2,570 | 1,613 | 0.37 | Hornady 6.8 SPC 110gr BTHP published load data |
| 110 gr | BTHP | 18 in | 2,630 | 1,689 | 0.37 | Hornady 6.8 SPC 110gr BTHP published load data |
| 115 gr | OTM | 16 in | 2,500 | 1,596 | 0.38 | Silver State Armory 6.8 SPC 115gr OTM published specs |
| 115 gr | OTM | 18 in | 2,560 | 1,673 | 0.38 | Silver State Armory 6.8 SPC 115gr OTM published specs |
Data Disclaimer
Ballistic data is approximate and varies by ammunition lot, barrel condition, altitude, and temperature. Data sourced from Barnes 6.8 SPC 85gr TSX published load data; Hornady 6.8 SPC 110gr BTHP published load data; Silver State Armory 6.8 SPC 115gr OTM published specs. Always confirm zero and trajectory with your specific firearm.
Pick the right barrel
Twist rate should match the bullet weights you plan to shoot. See barrel steel grades, profiles, chamber types, and twist rate guidance on the barrel specs page, then jump into the builder to filter barrels chambered in 6.8 SPC.