Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 130gr | Sierra GameKing bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Hodgdon H322 and SNPE Vectan SP 10.
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>> | 84% | 51,503 psi | 88% | 2464 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 52,025 psi | 89% | 2549 fps | 100% |
| Accurate 2230 | <<locked>> | 88% | 51,053 psi | 87% | 2582 fps | 95.9% |
| Accurate 2460 | <<locked>> | 94% | 50,444 psi | 86% | 2559 fps | 99.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 43,352 psi | 74% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 98% | 50,865 psi | 87% | 2605 fps | 99.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 40,292 psi | 69% | 2467 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 90% | 52,330 psi | 89% | 2480 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 90% | 52,779 psi | 90% | 2493 fps | 99.2% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 51,198 psi | 87% | 2602 fps | 96.5% |
| ADI AR 2207 | <<locked>> | 88% | 52,272 psi | 89% | 2513 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 49,980 psi | 85% | 2572 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 98% | 50,908 psi | 87% | 2569 fps | 97.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,256 psi | 87% | 2615 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 51,677 psi | 88% | 2664 fps | 97.5% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,721 psi | 88% | 2615 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 94% | 52,663 psi | 90% | 2572 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 50,763 psi | 86% | 2487 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 50,604 psi | 86% | 2477 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 96% | 50,937 psi | 87% | 2523 fps | 98.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 51,605 psi | 88% | 2638 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 94% | 51,576 psi | 88% | 2595 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 94% | 53,011 psi | 90% | 2618 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 86% | 50,792 psi | 86% | 2474 fps | 99.7% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 51,503 psi | 88% | 2615 fps | 97.2% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 46,441 psi | 79% | 2575 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,576 psi | 55% | 1516 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 50,372 psi | 86% | 2572 fps | 96.8% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,791 psi | 83% | 2615 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 50,807 psi | 86% | 2500 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 51,140 psi | 87% | 2434 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 50,908 psi | 87% | 2569 fps | 97.7% |
| Lovex D073.4 | <<locked>> | 88% | 51,677 psi | 88% | 2582 fps | 99% |
| Lovex D073.5 | <<locked>> | 94% | 50,604 psi | 86% | 2562 fps | 98.5% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 48,109 psi | 82% | 2579 fps | 98.8% |
| Lovex S053 | <<locked>> | 84% | 53,026 psi | 90% | 2425 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 52,953 psi | 90% | 2546 fps | 96.8% |
| Lovex S062ᴾ | <<locked>> | 100% | 44,005 psi | 75% | 2480 fps | 96.5% |
| Norma 200 | <<locked>> | 90% | 52,953 psi | 90% | 2552 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,893 psi | 85% | 2556 fps | 97.6% |
| Norma 202ᴾ | <<locked>> | 100% | 49,400 psi | 84% | 2569 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 98% | 49,893 psi | 85% | 2585 fps | 96.1% |
| Ramshot X-Terminator | <<locked>> | 94% | 50,241 psi | 86% | 2533 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,503 psi | 55% | 1552 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,068 psi | 87% | 2470 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 51,140 psi | 87% | 2572 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 98% | 50,995 psi | 87% | 2559 fps | 99.4% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 46,717 psi | 80% | 2500 fps | 97% |
| Shooters World AR Plus | <<locked>> | 88% | 51,677 psi | 88% | 2582 fps | 99% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 48,109 psi | 82% | 2579 fps | 98.8% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 44,005 psi | 75% | 2480 fps | 96.5% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 52,069 psi | 89% | 2539 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 51,010 psi | 87% | 2254 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 50,386 psi | 86% | 2575 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 50,821 psi | 87% | 2543 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 49,501 psi | 84% | 2569 fps | 96.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 53,113 psi | 90% | 2526 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,525 psi | 72% | 2388 fps | 99.1% |
| Somchem S321 | <<locked>> | 96% | 52,141 psi | 89% | 2612 fps | 98.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 51,634 psi | 88% | 2530 fps | 99.8% |
| Somchem S341ᴾ | <<locked>> | 100% | 52,156 psi | 89% | 2592 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 88% | 52,315 psi | 89% | 2467 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 52,910 psi | 90% | 2520 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 52,185 psi | 89% | 2523 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 44,164 psi | 75% | 2493 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 46,833 psi | 80% | 2507 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 98% | 51,880 psi | 88% | 2575 fps | 97.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 45,092 psi | 77% | 2497 fps | 98.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 52,721 psi | 90% | 2654 fps | 98.8% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 48,689 psi | 83% | 2575 fps | 96.6% |
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% | 44,817 psi | 76% | 2372 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 29,602 psi | 50% | 2162 fps | 97.6% |
| Accurate 2230 | <<locked>> | 86% | 47,485 psi | 81% | 2530 fps | 95.1% |
| Accurate 2460 | <<locked>> | 80% | 31,662 psi | 54% | 2228 fps | 95.2% |
| Accurate 2495 | <<locked>> | 80% | 22,321 psi | 38% | 2044 fps | 95% |
| Accurate 2520 | <<locked>> | 86% | 33,605 psi | 57% | 2310 fps | 95.5% |
| Accurate 4064 | <<locked>> | 90% | 29,269 psi | 50% | 2238 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 38,464 psi | 65% | 2264 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 80% | 38,856 psi | 66% | 2267 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 96% | 45,078 psi | 77% | 2503 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 40,785 psi | 69% | 2349 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,027 psi | 61% | 2333 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 90% | 39,856 psi | 68% | 2385 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 27,224 psi | 46% | 2175 fps | 99.1% |
| Alliant Power Pro 1200-R | 27.8 gr | 88% | 42,511 psi | 72% | 2510 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 42,844 psi | 73% | 2474 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,229 psi | 58% | 2270 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 42,003 psi | 72% | 2356 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,796 psi | 63% | 2257 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 37,855 psi | 64% | 2300 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 90% | 36,985 psi | 63% | 2392 fps | 95.1% |
| Hodgdon H322 | 25.2 gr | 80% | 32,851 psi | 56% | 2267 fps | 97% |
| Hodgdon H335 | <<locked>> | 80% | 33,214 psi | 57% | 2277 fps | 96% |
| Hodgdon H4198 | <<locked>> | 80% | 42,395 psi | 72% | 2346 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 94% | 42,656 psi | 73% | 2470 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 43,366 psi | 74% | 2523 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,120 psi | 41% | 1355 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 44,309 psi | 75% | 2474 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 26,121 psi | 44% | 2146 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 35,839 psi | 61% | 2260 fps | 99.9% |
| IMR 4227 | <<locked>> | 80% | 48,066 psi | 82% | 2392 fps | 100% |
| IMR 8208 XBR | <<locked>> | 90% | 39,856 psi | 68% | 2385 fps | 95.2% |
| Lovex D073.4 | <<locked>> | 80% | 39,088 psi | 67% | 2379 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 84% | 35,926 psi | 61% | 2316 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 90% | 34,447 psi | 59% | 2339 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 46,949 psi | 80% | 2346 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 47,137 psi | 80% | 2457 fps | 95.5% |
| Lovex S062 | <<locked>> | 96% | 39,073 psi | 67% | 2392 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 38,783 psi | 66% | 2339 fps | 100% |
| Norma 201 | <<locked>> | 92% | 38,870 psi | 66% | 2372 fps | 95% |
| Norma 202 | <<locked>> | 86% | 31,966 psi | 54% | 2254 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 96% | 47,079 psi | 80% | 2543 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 92% | 46,978 psi | 80% | 2480 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,207 psi | 41% | 1391 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,153 psi | 82% | 2428 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 34,998 psi | 60% | 2290 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 82% | 31,894 psi | 54% | 2208 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 94% | 39,059 psi | 66% | 2365 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 39,088 psi | 67% | 2379 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 34,447 psi | 59% | 2339 fps | 95.7% |
| Shooters World Precision | <<locked>> | 96% | 39,073 psi | 67% | 2392 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 42,569 psi | 72% | 2395 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,410 psi | 74% | 2159 fps | 100% |
| SNPE Vectan SP 10 | 27 gr | 80% | 36,434 psi | 62% | 2339 fps | 96.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,925 psi | 59% | 2277 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 46,238 psi | 79% | 2516 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 30,792 psi | 52% | 2142 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 28,166 psi | 48% | 2096 fps | 95.1% |
| Somchem S321 | <<locked>> | 88% | 39,871 psi | 68% | 2411 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 28,181 psi | 48% | 2100 fps | 95% |
| Somchem S341 | <<locked>> | 98% | 48,660 psi | 83% | 2539 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 40,930 psi | 70% | 2310 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,011 psi | 56% | 2195 fps | 99.1% |
| Vihtavuori N133 | <<locked>> | 80% | 28,718 psi | 49% | 2113 fps | 97.1% |
| Vihtavuori N135 | <<locked>> | 80% | 23,917 psi | 41% | 2060 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 86% | 30,211 psi | 51% | 2192 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 90% | 39,769 psi | 68% | 2379 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 90% | 32,909 psi | 56% | 2270 fps | 95.7% |
| Winchester 748 | <<locked>> | 90% | 38,043 psi | 65% | 2408 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 96% | 42,438 psi | 72% | 2474 fps | 95% |
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 91 powders for 6.8 mm Rem. SPC loaded with the .277 | 130gr | Sierra GameKing. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,664 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,664 fps. Accurate 2495 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.277" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2206H 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. Alliant Power Pro 1200-R, Hodgdon H322, SNPE Vectan SP 10 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 130gr | Sierra GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Power Pro 2000-MR, Alliant Reloder-15 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.