Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 112gr | Lehigh Defense Controlled Chaos bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, ADI AR 2219 and Hodgdon H335.
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>> | 88% | 52,649 psi | 90% | 2674 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 48,892 psi | 83% | 2703 fps | 99.7% |
| Accurate 2460 | <<locked>> | 98% | 51,010 psi | 87% | 2756 fps | 98.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,927 psi | 63% | 2575 fps | 98.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,456 psi | 81% | 2743 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 94% | 53,113 psi | 90% | 2677 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 92% | 50,604 psi | 86% | 2641 fps | 97.7% |
| ADI AR 2207 | <<locked>> | 92% | 52,547 psi | 89% | 2726 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 50,705 psi | 86% | 2776 fps | 99.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,947 psi | 77% | 2730 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 98% | 52,968 psi | 90% | 2782 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,169 psi | 87% | 2690 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,387 psi | 87% | 2674 fps | 99.4% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,011 psi | 89% | 2720 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 98% | 52,286 psi | 89% | 2799 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 96% | 50,183 psi | 85% | 2772 fps | 98.3% |
| Hodgdon H4198 | <<locked>> | 90% | 52,170 psi | 89% | 2684 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,705 psi | 54% | 1631 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,873 psi | 73% | 2707 fps | 98.7% |
| IMR 4198 | <<locked>> | 96% | 51,329 psi | 87% | 2710 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 52,533 psi | 89% | 2654 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 52,069 psi | 89% | 2776 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 98% | 51,198 psi | 87% | 2756 fps | 97% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 41,466 psi | 71% | 2654 fps | 95.8% |
| Lovex S053 | <<locked>> | 86% | 51,111 psi | 87% | 2605 fps | 100% |
| Norma 200 | <<locked>> | 94% | 53,098 psi | 90% | 2762 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 43,395 psi | 74% | 2661 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,488 psi | 54% | 1667 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 51,808 psi | 88% | 2684 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 51,764 psi | 88% | 2769 fps | 97.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,124 psi | 82% | 2703 fps | 97.8% |
| Shooters World AR Plus | <<locked>> | 92% | 52,069 psi | 89% | 2776 fps | 97.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 41,466 psi | 71% | 2654 fps | 95.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 51,663 psi | 88% | 2461 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,300 psi | 87% | 2782 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 50,633 psi | 86% | 2740 fps | 99.6% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 47,543 psi | 81% | 2628 fps | 97.7% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,043 psi | 65% | 2477 fps | 96.6% |
| Somchem S321ᴾ | <<locked>> | 100% | 52,779 psi | 90% | 2805 fps | 96.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,934 psi | 78% | 2631 fps | 98.3% |
| Vihtavuori N120 | <<locked>> | 92% | 52,663 psi | 90% | 2677 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 50,415 psi | 86% | 2680 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 46,514 psi | 79% | 2635 fps | 99.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 38,522 psi | 66% | 2585 fps | 98.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,394 psi | 70% | 2595 fps | 96.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 39,755 psi | 68% | 2579 fps | 95.8% |
| Winchester 748ᴾ | <<locked>> | 100% | 46,557 psi | 79% | 2736 fps | 95.9% |
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% | 40,770 psi | 69% | 2487 fps | 99.4% |
| Accurate 2015 | <<locked>> | 82% | 27,862 psi | 47% | 2283 fps | 95.1% |
| Accurate 2460 | <<locked>> | 90% | 38,769 psi | 66% | 2549 fps | 95.6% |
| Accurate 2495 | <<locked>> | 92% | 28,195 psi | 48% | 2379 fps | 95.9% |
| Accurate 2520 | <<locked>> | 94% | 38,464 psi | 65% | 2582 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 34,795 psi | 59% | 2356 fps | 95.9% |
| Accurate LT-32 | <<locked>> | 84% | 39,987 psi | 68% | 2457 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 36,260 psi | 62% | 2464 fps | 100% |
| ADI AR 2219 | 27 gr | 82% | 34,258 psi | 58% | 2464 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 24,323 psi | 41% | 2241 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,182 psi | 51% | 2356 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,971 psi | 65% | 2467 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,880 psi | 56% | 2339 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 96% | 45,905 psi | 78% | 2621 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 84% | 33,257 psi | 57% | 2441 fps | 95% |
| Hodgdon H335 | 30 gr | 88% | 38,537 psi | 66% | 2562 fps | 95.7% |
| Hodgdon H4198 | <<locked>> | 80% | 38,348 psi | 65% | 2441 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,467 psi | 40% | 1460 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 31,386 psi | 53% | 2454 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,619 psi | 56% | 2365 fps | 98.7% |
| IMR 4227 | <<locked>> | 80% | 43,627 psi | 74% | 2520 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 42,351 psi | 72% | 2618 fps | 95.8% |
| Lovex D073.5 | <<locked>> | 94% | 44,338 psi | 75% | 2648 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 98% | 39,001 psi | 66% | 2605 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 43,120 psi | 73% | 2484 fps | 100% |
| Norma 200 | <<locked>> | 80% | 34,171 psi | 58% | 2434 fps | 99% |
| Norma 202 | <<locked>> | 94% | 36,230 psi | 62% | 2520 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,453 psi | 40% | 1496 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 43,308 psi | 74% | 2552 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 42,902 psi | 73% | 2618 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 92% | 37,724 psi | 64% | 2510 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 86% | 42,351 psi | 72% | 2618 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 98% | 39,001 psi | 66% | 2605 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,784 psi | 68% | 2293 fps | 100% |
| SNPE Vectan SP 10 | 28.6 gr | 84% | 36,767 psi | 63% | 2520 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,024 psi | 53% | 2359 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 37,173 psi | 63% | 2441 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 33,707 psi | 57% | 2385 fps | 95.1% |
| Somchem S321 | <<locked>> | 96% | 45,934 psi | 78% | 2697 fps | 95.2% |
| Somchem S335 | <<locked>> | 90% | 33,663 psi | 57% | 2395 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 36,448 psi | 62% | 2428 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,341 psi | 50% | 2280 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 84% | 28,805 psi | 49% | 2274 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 90% | 28,427 psi | 48% | 2349 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 36,434 psi | 62% | 2493 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 98% | 37,521 psi | 64% | 2533 fps | 95.1% |
| Winchester 748 | <<locked>> | 98% | 43,903 psi | 75% | 2690 fps | 95.2% |
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 72 powders for 6.8 mm Rem. SPC loaded with the .277 | 112gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,851 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,851 fps. Accurate 2015 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 112.0 gr projectile in 0.277" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 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. SNPE Vectan SP 10, ADI AR 2219, Hodgdon H335 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 112gr | 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, ADI AR 2206H 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.