Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 100gr | Lehigh Defense Controlled Chaos bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, SNPE Vectan SP 10 and Norma 200.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 90% | 51,895 psi | 88% | 2808 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,990 psi | 75% | 2769 fps | 98.4% |
| Accurate 2460ᴾ | <<locked>> | 100% | 49,095 psi | 84% | 2867 fps | 96.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,140 psi | 55% | 2612 fps | 95.9% |
| Accurate LT-30 | <<locked>> | 96% | 52,475 psi | 89% | 2808 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 96% | 53,026 psi | 90% | 2815 fps | 96.8% |
| ADI AR 2205 | <<locked>> | 82% | 51,039 psi | 87% | 2680 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 50,821 psi | 87% | 2864 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 52,489 psi | 89% | 2946 fps | 98.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,567 psi | 69% | 2792 fps | 99.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 50,981 psi | 87% | 2907 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 92% | 50,154 psi | 85% | 2828 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 50,241 psi | 86% | 2795 fps | 98.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 50,415 psi | 86% | 2913 fps | 98.1% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 51,706 psi | 88% | 2933 fps | 97.3% |
| Hodgdon H4198 | <<locked>> | 92% | 51,097 psi | 87% | 2805 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,937 psi | 53% | 1716 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,638 psi | 66% | 2753 fps | 96.2% |
| IMR 4198ᴾ | <<locked>> | 100% | 53,098 psi | 90% | 2887 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 51,677 psi | 88% | 2795 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 51,401 psi | 88% | 2828 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 50,343 psi | 86% | 2894 fps | 96.1% |
| Lovex S053 | <<locked>> | 90% | 52,605 psi | 90% | 2782 fps | 100% |
| Norma 200 | <<locked>> | 96% | 50,995 psi | 87% | 2890 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,618 psi | 52% | 1755 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 51,010 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 50,328 psi | 86% | 2884 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 94% | 50,343 psi | 86% | 2894 fps | 96.1% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 51,401 psi | 88% | 2828 fps | 100% |
| Shooters World SOCOM | <<locked>> | 82% | 52,605 psi | 90% | 2805 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 50,966 psi | 87% | 2605 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 49,690 psi | 85% | 2897 fps | 96.9% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 51,909 psi | 88% | 2907 fps | 99% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,684 psi | 71% | 2690 fps | 96.1% |
| Vihtavuori N110 | <<locked>> | 84% | 51,953 psi | 88% | 2690 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 50,923 psi | 87% | 2815 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 48,733 psi | 83% | 2802 fps | 99.5% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,221 psi | 72% | 2697 fps | 97.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,548 psi | 59% | 2631 fps | 96.3% |
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>> | 80% | 37,449 psi | 64% | 2556 fps | 97.9% |
| Accurate 2015 | <<locked>> | 90% | 31,981 psi | 54% | 2520 fps | 95.2% |
| Accurate 2460 | <<locked>> | 96% | 42,453 psi | 72% | 2753 fps | 95% |
| Accurate 2495 | <<locked>> | 98% | 29,747 psi | 51% | 2552 fps | 95% |
| Accurate LT-30 | <<locked>> | 86% | 38,696 psi | 66% | 2566 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 92% | 46,702 psi | 80% | 2710 fps | 95.4% |
| ADI AR 2205 | <<locked>> | 80% | 48,051 psi | 82% | 2638 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 32,866 psi | 56% | 2536 fps | 99.6% |
| ADI AR 2219 | 29 gr | 88% | 38,043 psi | 65% | 2680 fps | 95% |
| Alliant AR-Comp | <<locked>> | 86% | 26,411 psi | 45% | 2425 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 82% | 29,269 psi | 50% | 2464 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,708 psi | 59% | 2533 fps | 97.8% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 36,622 psi | 62% | 2546 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 92% | 39,204 psi | 67% | 2703 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 94% | 42,453 psi | 72% | 2769 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 84% | 40,277 psi | 69% | 2608 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,858 psi | 39% | 1539 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 36,419 psi | 62% | 2703 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 30,052 psi | 51% | 2428 fps | 96.6% |
| IMR 4227 | <<locked>> | 80% | 40,321 psi | 69% | 2605 fps | 99.8% |
| Lovex D060 | <<locked>> | 80% | 48,385 psi | 82% | 2779 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 92% | 46,804 psi | 80% | 2835 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 39,755 psi | 68% | 2579 fps | 100% |
| Norma 200 | 24.9 gr | 80% | 30,835 psi | 52% | 2490 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,742 psi | 39% | 1578 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,711 psi | 68% | 2635 fps | 99.7% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 46,949 psi | 80% | 2828 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 92% | 46,804 psi | 80% | 2835 fps | 95.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 48,385 psi | 82% | 2779 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 80% | 49,023 psi | 83% | 2749 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 36,927 psi | 63% | 2392 fps | 100% |
| SNPE Vectan SP 10 | 31.3 gr | 92% | 43,279 psi | 74% | 2785 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 36,071 psi | 61% | 2608 fps | 95.6% |
| Somchem S335 | <<locked>> | 98% | 38,899 psi | 66% | 2635 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 46,253 psi | 79% | 2612 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 33,054 psi | 56% | 2503 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 30,124 psi | 51% | 2428 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 92% | 33,330 psi | 57% | 2510 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 98% | 32,547 psi | 55% | 2579 fps | 95.5% |
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 63 powders for 6.8 mm Rem. SPC loaded with the .277 | 100gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,963 fps. Accurate 2015 gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.277" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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. ADI AR 2219, SNPE Vectan SP 10, Norma 200 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 100gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, Accurate 2520 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.