Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 90gr | Speer Gold Dot bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, ReloadSwiss RS 36 and Lovex D060.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 96% | 50,778 psi | 86% | 2835 fps | 98.2% |
| Accurate 1680 | <<locked>> | 96% | 50,778 psi | 86% | 2835 fps | 98.2% |
| Accurate 5744 | <<locked>> | 82% | 50,894 psi | 87% | 2867 fps | 98.9% |
| Accurate 5744 | <<locked>> | 82% | 50,894 psi | 87% | 2867 fps | 98.9% |
| Accurate No. 11 FS | <<locked>> | 84% | 49,966 psi | 85% | 2812 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 84% | 49,966 psi | 85% | 2812 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 51,517 psi | 88% | 2749 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 51,517 psi | 88% | 2749 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 47,413 psi | 81% | 2890 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 47,413 psi | 81% | 2890 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 38,711 psi | 66% | 2746 fps | 96% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 38,711 psi | 66% | 2746 fps | 96% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 50,531 psi | 86% | 2887 fps | 98.7% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 50,531 psi | 86% | 2887 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,341 psi | 50% | 1722 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,341 psi | 50% | 1722 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 42,453 psi | 72% | 2753 fps | 97.7% |
| IMR 4198ᴾ | <<locked>> | 100% | 42,453 psi | 72% | 2753 fps | 97.7% |
| IMR 4227 | <<locked>> | 96% | 53,084 psi | 90% | 2874 fps | 99.9% |
| IMR 4227 | <<locked>> | 96% | 53,084 psi | 90% | 2874 fps | 99.9% |
| Lovex D060 | <<locked>> | 88% | 51,430 psi | 88% | 2877 fps | 99% |
| Lovex D060 | <<locked>> | 88% | 51,430 psi | 88% | 2877 fps | 99% |
| Lovex D063 | <<locked>> | 84% | 51,285 psi | 87% | 2854 fps | 99% |
| Lovex D063 | <<locked>> | 84% | 51,285 psi | 87% | 2854 fps | 99% |
| Lovex S053 | <<locked>> | 96% | 50,473 psi | 86% | 2828 fps | 100% |
| Lovex S053 | <<locked>> | 96% | 50,473 psi | 86% | 2828 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 44,266 psi | 75% | 2844 fps | 98.1% |
| Norma 200ᴾ | <<locked>> | 100% | 44,266 psi | 75% | 2844 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,456 psi | 48% | 1752 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,456 psi | 48% | 1752 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 51,619 psi | 88% | 2900 fps | 99.7% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 51,619 psi | 88% | 2900 fps | 99.7% |
| Shooters World Blackout | <<locked>> | 84% | 51,285 psi | 87% | 2854 fps | 99% |
| Shooters World Blackout | <<locked>> | 84% | 51,285 psi | 87% | 2854 fps | 99% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 51,430 psi | 88% | 2877 fps | 99% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 51,430 psi | 88% | 2877 fps | 99% |
| Shooters World SOCOM | <<locked>> | 88% | 52,127 psi | 89% | 2848 fps | 99.4% |
| Shooters World SOCOM | <<locked>> | 88% | 52,127 psi | 89% | 2848 fps | 99.4% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 51,242 psi | 87% | 2690 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 51,242 psi | 87% | 2690 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 50,778 psi | 86% | 2759 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 50,778 psi | 86% | 2759 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 47,674 psi | 81% | 2848 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 47,674 psi | 81% | 2848 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 38,957 psi | 66% | 2628 fps | 95.7% |
| Accurate 1680 | <<locked>> | 88% | 38,957 psi | 66% | 2628 fps | 95.7% |
| Accurate 5744 | <<locked>> | 80% | 48,080 psi | 82% | 2822 fps | 98.6% |
| Accurate 5744 | <<locked>> | 80% | 48,080 psi | 82% | 2822 fps | 98.6% |
| Accurate No. 11 FS | <<locked>> | 80% | 43,990 psi | 75% | 2717 fps | 99.8% |
| Accurate No. 11 FS | <<locked>> | 80% | 43,990 psi | 75% | 2717 fps | 99.8% |
| ADI AR 2205 | <<locked>> | 80% | 40,451 psi | 69% | 2572 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 40,451 psi | 69% | 2572 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 25,469 psi | 43% | 2398 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 25,469 psi | 43% | 2398 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 98% | 36,463 psi | 62% | 2700 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 98% | 36,463 psi | 62% | 2700 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 88% | 34,969 psi | 60% | 2592 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 88% | 34,969 psi | 60% | 2592 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,263 psi | 36% | 1532 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,263 psi | 36% | 1532 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 34,316 psi | 58% | 2575 fps | 95.3% |
| IMR 4198 | <<locked>> | 92% | 34,316 psi | 58% | 2575 fps | 95.3% |
| IMR 4227 | <<locked>> | 80% | 32,909 psi | 56% | 2497 fps | 96.7% |
| IMR 4227 | <<locked>> | 80% | 32,909 psi | 56% | 2497 fps | 96.7% |
| Lovex D060 | 20.5 gr | 80% | 40,524 psi | 69% | 2671 fps | 97.1% |
| Lovex D060 | 20.5 gr | 80% | 40,524 psi | 69% | 2671 fps | 97.1% |
| Lovex D063 | <<locked>> | 80% | 44,570 psi | 76% | 2743 fps | 98.1% |
| Lovex D063 | <<locked>> | 80% | 44,570 psi | 76% | 2743 fps | 98.1% |
| Lovex S053 | <<locked>> | 80% | 32,053 psi | 55% | 2484 fps | 99.2% |
| Lovex S053 | <<locked>> | 80% | 32,053 psi | 55% | 2484 fps | 99.2% |
| Norma 200 | <<locked>> | 92% | 34,127 psi | 58% | 2638 fps | 95.5% |
| Norma 200 | <<locked>> | 92% | 34,127 psi | 58% | 2638 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,711 psi | 35% | 1565 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,711 psi | 35% | 1565 fps | 100% |
| ReloadSwiss RS 36 | 21.4 gr | 80% | 31,763 psi | 54% | 2513 fps | 96.2% |
| ReloadSwiss RS 36 | 21.4 gr | 80% | 31,763 psi | 54% | 2513 fps | 96.2% |
| Shooters World Blackout | <<locked>> | 80% | 44,570 psi | 76% | 2743 fps | 98.1% |
| Shooters World Blackout | <<locked>> | 80% | 44,570 psi | 76% | 2743 fps | 98.1% |
| Shooters World Buffalo Rifle | 20.5 gr | 80% | 40,524 psi | 69% | 2671 fps | 97.1% |
| Shooters World Buffalo Rifle | 20.5 gr | 80% | 40,524 psi | 69% | 2671 fps | 97.1% |
| Shooters World SOCOM | <<locked>> | 80% | 39,972 psi | 68% | 2638 fps | 97.7% |
| Shooters World SOCOM | <<locked>> | 80% | 39,972 psi | 68% | 2638 fps | 97.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,226 psi | 51% | 2336 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,226 psi | 51% | 2336 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,739 psi | 64% | 2552 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,739 psi | 64% | 2552 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 25,875 psi | 44% | 2379 fps | 96.8% |
| Vihtavuori N120 | <<locked>> | 80% | 25,875 psi | 44% | 2379 fps | 96.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 44 powders for 6.8 mm Rem. SPC loaded with the .277 | 90gr | Speer Gold Dot. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,900 fps. ADI AR 2207 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. ADI AR 2207, ADI AR 2207, Alliant Reloder-10x reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Shooters World Buffalo Rifle, ReloadSwiss RS 36, Lovex D060 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 90gr | Speer Gold Dot they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.