Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 150gr | Winchester Powerpoint bullet and 59 powders. The key underlying parameters are shown in the table above.
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>> | 86% | 50,227 psi | 86% | 2169 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 49,647 psi | 85% | 2238 fps | 100% |
| Accurate 2230 | <<locked>> | 92% | 52,620 psi | 90% | 2306 fps | 95.9% |
| Accurate 2460 | <<locked>> | 98% | 51,488 psi | 88% | 2287 fps | 99.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 37,260 psi | 63% | 2142 fps | 99.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 47,747 psi | 81% | 2277 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 34,751 psi | 59% | 2113 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 92% | 50,894 psi | 87% | 2175 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 92% | 51,416 psi | 88% | 2185 fps | 98.9% |
| ADI AR 2207 | <<locked>> | 92% | 53,084 psi | 90% | 2238 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 51,300 psi | 87% | 2300 fps | 99.8% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 49,081 psi | 84% | 2254 fps | 97.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 45,440 psi | 77% | 2257 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 52,446 psi | 89% | 2375 fps | 97.4% |
| Alliant Reloder-10x | <<locked>> | 96% | 50,386 psi | 86% | 2257 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 51,996 psi | 89% | 2215 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 51,648 psi | 88% | 2208 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 52,518 psi | 89% | 2254 fps | 98.2% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 45,600 psi | 78% | 2267 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 98% | 52,620 psi | 90% | 2316 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 96% | 50,517 psi | 86% | 2297 fps | 99.3% |
| Hodgdon H4198 | <<locked>> | 90% | 52,866 psi | 90% | 2211 fps | 99.7% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 46,021 psi | 78% | 2247 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,227 psi | 55% | 1312 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 43,250 psi | 74% | 2247 fps | 99.7% |
| IMR 4198 | <<locked>> | 96% | 52,460 psi | 89% | 2231 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 49,864 psi | 85% | 2136 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 49,081 psi | 84% | 2254 fps | 97.2% |
| Lovex D073.4 | <<locked>> | 92% | 52,721 psi | 90% | 2303 fps | 99% |
| Lovex D073.5 | <<locked>> | 98% | 51,967 psi | 88% | 2293 fps | 98.5% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 42,018 psi | 72% | 2211 fps | 97.7% |
| Lovex S053 | <<locked>> | 86% | 51,706 psi | 88% | 2129 fps | 100% |
| Norma 200 | <<locked>> | 92% | 50,343 psi | 86% | 2238 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 44,440 psi | 76% | 2195 fps | 96.3% |
| Norma 202ᴾ | <<locked>> | 100% | 43,845 psi | 75% | 2211 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 98% | 51,256 psi | 87% | 2254 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,763 psi | 54% | 1339 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 52,475 psi | 89% | 2201 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 52,199 psi | 89% | 2293 fps | 98.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 48,559 psi | 83% | 2238 fps | 99% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 42,119 psi | 72% | 2152 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 92% | 52,721 psi | 90% | 2303 fps | 99% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 42,018 psi | 72% | 2211 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 50,401 psi | 86% | 2228 fps | 96.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 52,663 psi | 90% | 2008 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 51,982 psi | 88% | 2310 fps | 99.4% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 51,242 psi | 87% | 2260 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 48,312 psi | 82% | 2178 fps | 98.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 38,580 psi | 66% | 2057 fps | 98.2% |
| Somchem S321 | <<locked>> | 98% | 49,472 psi | 84% | 2287 fps | 97.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 46,195 psi | 79% | 2178 fps | 99.3% |
| Vihtavuori N120 | <<locked>> | 92% | 53,142 psi | 90% | 2195 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 51,053 psi | 87% | 2211 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 47,253 psi | 80% | 2178 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 39,189 psi | 67% | 2149 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 41,945 psi | 71% | 2159 fps | 98.5% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 49,197 psi | 84% | 2247 fps | 97.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,292 psi | 69% | 2152 fps | 97.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 46,978 psi | 80% | 2280 fps | 97.7% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 41,263 psi | 70% | 2051 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 26,876 psi | 46% | 1864 fps | 96.7% |
| Accurate 2230 | <<locked>> | 90% | 48,660 psi | 83% | 2257 fps | 95.1% |
| Accurate 2460 | <<locked>> | 84% | 32,271 psi | 55% | 1995 fps | 95.4% |
| Accurate 2495 | <<locked>> | 84% | 22,162 psi | 38% | 1831 fps | 95.2% |
| Accurate 2520 | <<locked>> | 90% | 34,055 psi | 58% | 2067 fps | 95.6% |
| Accurate 4064 | <<locked>> | 94% | 28,689 psi | 49% | 1995 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 35,563 psi | 61% | 1952 fps | 97.8% |
| Accurate LT-32 | <<locked>> | 80% | 35,940 psi | 61% | 1955 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 36,999 psi | 63% | 2028 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 32,619 psi | 56% | 2008 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 94% | 40,379 psi | 69% | 2126 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 24,758 psi | 42% | 1873 fps | 98.2% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 42,670 psi | 73% | 2238 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 30,995 psi | 53% | 1959 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 80% | 38,609 psi | 66% | 2037 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,605 psi | 57% | 1946 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 38,972 psi | 66% | 2060 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 37,405 psi | 64% | 2136 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 29,878 psi | 51% | 1949 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 82% | 31,763 psi | 54% | 1998 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 39,233 psi | 67% | 2021 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 98% | 43,279 psi | 74% | 2205 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,757 psi | 40% | 1171 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 26,571 psi | 45% | 1923 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 32,880 psi | 56% | 1949 fps | 99.7% |
| IMR 4227 | <<locked>> | 80% | 44,382 psi | 76% | 2067 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 40,379 psi | 69% | 2126 fps | 95.1% |
| Lovex D073.4 | <<locked>> | 80% | 34,896 psi | 59% | 2041 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 88% | 36,854 psi | 63% | 2080 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 94% | 34,563 psi | 59% | 2090 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 43,352 psi | 74% | 2028 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,027 psi | 60% | 2018 fps | 99.8% |
| Norma 201 | <<locked>> | 96% | 39,218 psi | 67% | 2113 fps | 95% |
| Norma 202 | <<locked>> | 88% | 30,530 psi | 52% | 1978 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 96% | 48,283 psi | 82% | 2218 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,467 psi | 40% | 1198 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,106 psi | 75% | 2100 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 35,984 psi | 61% | 2054 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 86% | 32,503 psi | 55% | 1978 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 98% | 39,581 psi | 67% | 2110 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 34,896 psi | 59% | 2041 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 94% | 34,563 psi | 59% | 2090 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 90% | 43,845 psi | 75% | 2142 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 40,466 psi | 69% | 1870 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 32,706 psi | 56% | 2008 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 31,502 psi | 54% | 1955 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 31,691 psi | 54% | 1916 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 28,660 psi | 49% | 1873 fps | 95.2% |
| Somchem S321 | <<locked>> | 92% | 40,567 psi | 69% | 2159 fps | 95.7% |
| Somchem S335 | <<locked>> | 84% | 28,790 psi | 49% | 1883 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 37,202 psi | 63% | 1998 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 29,834 psi | 51% | 1890 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 25,933 psi | 44% | 1811 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 84% | 24,279 psi | 41% | 1844 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 90% | 30,908 psi | 53% | 1962 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 94% | 40,596 psi | 69% | 2126 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 94% | 33,605 psi | 57% | 2034 fps | 95.8% |
| Winchester 748 | <<locked>> | 94% | 39,102 psi | 67% | 2156 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 59 powders for 6.8 mm Rem. SPC loaded with the .277 | 150gr | Winchester Powerpoint. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,375 fps; across all powders the maximum-charge window runs from 1,312 fps to 2,375 fps. Accurate 2015 gives the best case fill at 100 %, and 59 of the 59 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 150.0 gr projectile in 0.277" calls for a 1:15.0 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 52, Hodgdon CFE223 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 150gr | Winchester Powerpoint 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.