Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 140gr | Swift A-Frame bullet and 78 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, SNPE Vectan SP 10 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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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>> | 84% | 52,257 psi | 89% | 2362 fps | 100% |
| Accurate 2015 | <<locked>> | 98% | 52,997 psi | 90% | 2448 fps | 100% |
| Accurate 2200 | <<locked>> | 88% | 52,040 psi | 89% | 2477 fps | 96.3% |
| Accurate 2230 | <<locked>> | 88% | 52,141 psi | 89% | 2484 fps | 96.7% |
| Accurate 2460 | <<locked>> | 94% | 51,750 psi | 88% | 2464 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 44,121 psi | 75% | 2398 fps | 100% |
| Accurate 2520 | <<locked>> | 98% | 52,112 psi | 89% | 2507 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 41,017 psi | 70% | 2372 fps | 99% |
| Accurate LT-30 | <<locked>> | 90% | 53,069 psi | 90% | 2379 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 50,343 psi | 86% | 2349 fps | 99.3% |
| ADI AR 2206Hᴾ | <<locked>> | 100% | 52,025 psi | 89% | 2500 fps | 97.2% |
| ADI AR 2207 | <<locked>> | 88% | 52,852 psi | 90% | 2402 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 51,401 psi | 88% | 2477 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 98% | 52,069 psi | 89% | 2470 fps | 98.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 52,460 psi | 89% | 2513 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 52,663 psi | 90% | 2562 fps | 98.1% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 41,626 psi | 71% | 2365 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 92% | 50,473 psi | 86% | 2425 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 51,300 psi | 87% | 2375 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 51,039 psi | 87% | 2372 fps | 100% |
| Baschieri & Pellagri 107ᴾ | <<locked>> | 100% | 51,851 psi | 88% | 2507 fps | 95.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 40,770 psi | 69% | 2369 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 96% | 51,750 psi | 88% | 2425 fps | 98.7% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 53,011 psi | 90% | 2543 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 96% | 51,735 psi | 88% | 2562 fps | 96.5% |
| Hodgdon H322 | <<locked>> | 94% | 52,504 psi | 89% | 2490 fps | 100% |
| Hodgdon H335 | <<locked>> | 92% | 50,618 psi | 86% | 2474 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 86% | 51,764 psi | 88% | 2375 fps | 99.9% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 52,315 psi | 89% | 2510 fps | 97.8% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 46,963 psi | 80% | 2477 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,011 psi | 56% | 1447 fps | 100% |
| Hodgdon VARGETᴾ | <<locked>> | 100% | 51,053 psi | 87% | 2470 fps | 97.5% |
| IMR 3031ᴾ | <<locked>> | 100% | 49,980 psi | 85% | 2513 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 51,880 psi | 88% | 2395 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 52,098 psi | 89% | 2329 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 46,818 psi | 80% | 2461 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 98% | 52,069 psi | 89% | 2470 fps | 98.3% |
| Lovex D073.4 | <<locked>> | 88% | 52,663 psi | 90% | 2480 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 94% | 51,503 psi | 88% | 2464 fps | 98.9% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 49,284 psi | 84% | 2480 fps | 99.3% |
| Lovex S053 | <<locked>> | 82% | 50,705 psi | 86% | 2280 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 50,821 psi | 87% | 2405 fps | 96.9% |
| Lovex S062ᴾ | <<locked>> | 100% | 45,063 psi | 77% | 2388 fps | 97.3% |
| Norma 200 | <<locked>> | 88% | 50,691 psi | 86% | 2408 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 50,502 psi | 86% | 2454 fps | 98.2% |
| Norma 202ᴾ | <<locked>> | 100% | 50,604 psi | 86% | 2474 fps | 99.7% |
| Norma 203Bᴾ | <<locked>> | 100% | 44,831 psi | 76% | 2418 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 98% | 50,995 psi | 87% | 2493 fps | 96.9% |
| Ramshot X-Terminator | <<locked>> | 94% | 51,024 psi | 87% | 2434 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,996 psi | 56% | 1480 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 51,953 psi | 88% | 2362 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 52,069 psi | 89% | 2470 fps | 99.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 40,437 psi | 69% | 2395 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 98% | 51,837 psi | 88% | 2457 fps | 99.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 47,790 psi | 81% | 2405 fps | 97.7% |
| Shooters World AR Plus | <<locked>> | 88% | 52,663 psi | 90% | 2480 fps | 99.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 49,284 psi | 84% | 2480 fps | 99.3% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 45,063 psi | 77% | 2388 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 49,487 psi | 84% | 2395 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 51,547 psi | 88% | 2152 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 51,416 psi | 88% | 2477 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 51,750 psi | 88% | 2438 fps | 100% |
| SNPE Vectan SP 9ᴾ | <<locked>> | 100% | 50,502 psi | 86% | 2474 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 51,169 psi | 87% | 2388 fps | 99.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 43,352 psi | 74% | 2297 fps | 99.4% |
| Somchem S321 | <<locked>> | 94% | 49,429 psi | 84% | 2461 fps | 98.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 52,228 psi | 89% | 2425 fps | 99.9% |
| Somchem S341ᴾ | <<locked>> | 100% | 53,040 psi | 90% | 2493 fps | 97.1% |
| Vihtavuori N120 | <<locked>> | 88% | 52,895 psi | 90% | 2356 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 50,821 psi | 87% | 2379 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 53,098 psi | 90% | 2418 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 45,150 psi | 77% | 2395 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 48,051 psi | 82% | 2415 fps | 99.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 38,406 psi | 65% | 2274 fps | 96% |
| Vihtavuori N530 | <<locked>> | 98% | 52,663 psi | 90% | 2474 fps | 98.4% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 45,963 psi | 78% | 2402 fps | 99.1% |
| Winchester 748 | <<locked>> | 98% | 50,575 psi | 86% | 2510 fps | 98.9% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 49,342 psi | 84% | 2477 fps | 97.3% |
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% | 45,730 psi | 78% | 2277 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 30,414 psi | 52% | 2083 fps | 98.4% |
| Accurate 2200 | <<locked>> | 86% | 48,805 psi | 83% | 2428 fps | 95.6% |
| Accurate 2230 | <<locked>> | 84% | 45,266 psi | 77% | 2382 fps | 95.2% |
| Accurate 2460 | <<locked>> | 80% | 32,532 psi | 55% | 2146 fps | 96.1% |
| Accurate 2495 | <<locked>> | 80% | 22,843 psi | 39% | 1969 fps | 96% |
| Accurate 2520 | <<locked>> | 84% | 32,024 psi | 55% | 2175 fps | 95.5% |
| Accurate 4064 | <<locked>> | 88% | 28,137 psi | 48% | 2116 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 39,334 psi | 67% | 2175 fps | 99% |
| Accurate LT-32 | <<locked>> | 80% | 39,697 psi | 68% | 2182 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 94% | 43,279 psi | 74% | 2365 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 41,713 psi | 71% | 2254 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 36,463 psi | 62% | 2241 fps | 98.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 38,319 psi | 65% | 2254 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 27,949 psi | 48% | 2100 fps | 99.6% |
| Alliant Power Pro 1200-R | 26 gr | 86% | 40,741 psi | 69% | 2369 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 39,117 psi | 67% | 2323 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,056 psi | 60% | 2185 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 80% | 43,004 psi | 73% | 2260 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,318 psi | 64% | 2165 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 48,341 psi | 82% | 2454 fps | 95% |
| Bofors RP3 | <<locked>> | 98% | 38,145 psi | 65% | 2323 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 84% | 36,448 psi | 62% | 2175 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 88% | 35,201 psi | 60% | 2254 fps | 95.2% |
| Hodgdon CFE223 | <<locked>> | 94% | 48,153 psi | 82% | 2510 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 33,518 psi | 57% | 2178 fps | 97.7% |
| Hodgdon H335 | 25.8 gr | 80% | 33,765 psi | 57% | 2192 fps | 96.8% |
| Hodgdon H4198 | <<locked>> | 80% | 43,352 psi | 74% | 2254 fps | 99.2% |
| Hodgdon H4895 | <<locked>> | 92% | 40,857 psi | 70% | 2333 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 41,582 psi | 71% | 2385 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,134 psi | 41% | 1286 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 42,438 psi | 72% | 2339 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 26,556 psi | 45% | 2067 fps | 96% |
| IMR 4198 | <<locked>> | 80% | 36,796 psi | 63% | 2172 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 48,849 psi | 83% | 2290 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 43,961 psi | 75% | 2415 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 88% | 38,319 psi | 65% | 2254 fps | 95.4% |
| Lovex D073.4 | <<locked>> | 80% | 39,784 psi | 68% | 2287 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 82% | 34,519 psi | 59% | 2188 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 88% | 32,982 psi | 56% | 2208 fps | 95.9% |
| Lovex S053 | <<locked>> | 80% | 48,153 psi | 82% | 2247 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 45,078 psi | 77% | 2320 fps | 95.6% |
| Lovex S062 | <<locked>> | 94% | 37,347 psi | 64% | 2257 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 39,436 psi | 67% | 2244 fps | 100% |
| Norma 201 | <<locked>> | 90% | 37,362 psi | 64% | 2238 fps | 95.2% |
| Norma 202 | <<locked>> | 84% | 30,501 psi | 52% | 2123 fps | 95.7% |
| Norma 203B | <<locked>> | 98% | 42,119 psi | 72% | 2372 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 94% | 44,686 psi | 76% | 2395 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 90% | 44,831 psi | 76% | 2339 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,279 psi | 41% | 1319 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 48,762 psi | 83% | 2323 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 33,330 psi | 57% | 2156 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 37,666 psi | 64% | 2336 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 30,487 psi | 52% | 2080 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 92% | 37,623 psi | 64% | 2238 fps | 95.2% |
| Shooters World AR Plus | <<locked>> | 80% | 39,784 psi | 68% | 2287 fps | 97.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 32,982 psi | 56% | 2208 fps | 95.9% |
| Shooters World Precision | <<locked>> | 94% | 37,347 psi | 64% | 2257 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 40,509 psi | 69% | 2254 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 44,048 psi | 75% | 2060 fps | 100% |
| SNPE Vectan SP 10 | 25.8 gr | 80% | 37,086 psi | 63% | 2247 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,404 psi | 60% | 2185 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 44,280 psi | 75% | 2379 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 29,327 psi | 50% | 2011 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 26,977 psi | 46% | 1978 fps | 95.2% |
| Somchem S321 | <<locked>> | 86% | 37,869 psi | 64% | 2270 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 28,616 psi | 49% | 2018 fps | 95.9% |
| Somchem S341 | <<locked>> | 96% | 46,369 psi | 79% | 2398 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 41,843 psi | 71% | 2215 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 33,402 psi | 57% | 2106 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 80% | 29,051 psi | 49% | 2028 fps | 97.8% |
| Vihtavuori N135 | <<locked>> | 80% | 24,265 psi | 41% | 1982 fps | 96.2% |
| Vihtavuori N140 | <<locked>> | 84% | 29,182 psi | 50% | 2073 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 98% | 36,013 psi | 61% | 2228 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 88% | 38,218 psi | 65% | 2247 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 86% | 29,602 psi | 50% | 2096 fps | 95% |
| Winchester 748 | <<locked>> | 86% | 34,258 psi | 58% | 2228 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 94% | 40,582 psi | 69% | 2336 fps | 95.1% |
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 93 powders for 6.8 mm Rem. SPC loaded with the .277 | 140gr | Swift A-Frame. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,562 fps; across all powders the maximum-charge window runs from 1,447 fps to 2,562 fps. Accurate 2495 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.277" calls for a 1:11.5 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, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 140gr | Swift A-Frame 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-17 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.