Load Specifications
Load data in caliber 6.8 mm Rem. SPC with .277 | 150gr | Hornady InterLock bullet and 55 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>> | 88% | 51,242 psi | 87% | 2156 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,673 psi | 79% | 2178 fps | 99.9% |
| Accurate 2460ᴾ | <<locked>> | 100% | 52,301 psi | 89% | 2270 fps | 99.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 34,635 psi | 59% | 2080 fps | 99% |
| Accurate 2520ᴾ | <<locked>> | 100% | 45,194 psi | 77% | 2221 fps | 97.9% |
| Accurate 4064ᴾ | <<locked>> | 100% | 32,372 psi | 55% | 2051 fps | 96.2% |
| Accurate LT-30 | <<locked>> | 94% | 51,866 psi | 88% | 2162 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 94% | 52,402 psi | 89% | 2169 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 92% | 50,850 psi | 87% | 2192 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 52,591 psi | 90% | 2287 fps | 99.8% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 46,644 psi | 79% | 2195 fps | 96.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 43,352 psi | 74% | 2205 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 52,823 psi | 90% | 2352 fps | 97.1% |
| Alliant Reloder-10x | <<locked>> | 98% | 51,111 psi | 87% | 2241 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 52,678 psi | 90% | 2201 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 49,414 psi | 84% | 2156 fps | 99.7% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 50,082 psi | 85% | 2195 fps | 97.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 42,917 psi | 73% | 2201 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 98% | 50,502 psi | 86% | 2264 fps | 99.6% |
| Hodgdon H335 | <<locked>> | 98% | 51,358 psi | 87% | 2280 fps | 99.2% |
| Hodgdon H4198 | <<locked>> | 90% | 51,024 psi | 87% | 2162 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,908 psi | 54% | 1289 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 41,336 psi | 70% | 2192 fps | 99.2% |
| IMR 4198 | <<locked>> | 98% | 53,113 psi | 90% | 2215 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 51,416 psi | 88% | 2129 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 46,644 psi | 79% | 2195 fps | 96.2% |
| Lovex D073.4 | <<locked>> | 92% | 49,821 psi | 85% | 2241 fps | 98.4% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 52,228 psi | 89% | 2267 fps | 98.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 39,595 psi | 67% | 2152 fps | 96.7% |
| Lovex S053 | <<locked>> | 88% | 52,504 psi | 89% | 2116 fps | 100% |
| Norma 200 | <<locked>> | 94% | 50,937 psi | 87% | 2221 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 41,887 psi | 71% | 2159 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,401 psi | 53% | 1316 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 50,952 psi | 87% | 2162 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 52,968 psi | 90% | 2277 fps | 98.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 46,354 psi | 79% | 2185 fps | 98.4% |
| Shooters World AR Plus | <<locked>> | 92% | 49,821 psi | 85% | 2241 fps | 98.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 39,595 psi | 67% | 2152 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 51,314 psi | 87% | 2211 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 50,778 psi | 86% | 1969 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 52,707 psi | 90% | 2290 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 52,025 psi | 89% | 2244 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 46,253 psi | 79% | 2126 fps | 98.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 36,941 psi | 63% | 2008 fps | 97.5% |
| Somchem S321ᴾ | <<locked>> | 100% | 50,314 psi | 86% | 2267 fps | 97.3% |
| Somchem S335ᴾ | <<locked>> | 100% | 43,787 psi | 75% | 2119 fps | 98.8% |
| Vihtavuori N110 | <<locked>> | 82% | 51,793 psi | 88% | 2031 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 50,908 psi | 87% | 2149 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 52,011 psi | 89% | 2198 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 45,194 psi | 77% | 2129 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,246 psi | 63% | 2096 fps | 99.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 39,784 psi | 68% | 2100 fps | 97.6% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 46,746 psi | 80% | 2188 fps | 96.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 38,363 psi | 65% | 2093 fps | 96.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 44,904 psi | 76% | 2221 fps | 96.8% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 39,537 psi | 67% | 2005 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 25,179 psi | 43% | 1808 fps | 95.6% |
| Accurate 2460 | <<locked>> | 86% | 32,387 psi | 55% | 1978 fps | 95% |
| Accurate 2495 | <<locked>> | 88% | 23,351 psi | 40% | 1847 fps | 95.5% |
| Accurate 2520 | <<locked>> | 92% | 33,982 psi | 58% | 2044 fps | 95.1% |
| Accurate 4064 | <<locked>> | 98% | 30,632 psi | 52% | 2018 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 34,258 psi | 58% | 1906 fps | 97% |
| Accurate LT-32 | <<locked>> | 82% | 36,564 psi | 62% | 1942 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 35,244 psi | 60% | 1982 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 31,111 psi | 53% | 1952 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 98% | 43,772 psi | 75% | 2152 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 23,395 psi | 40% | 1814 fps | 97.1% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 46,195 psi | 79% | 2264 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,472 psi | 50% | 1909 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,608 psi | 62% | 1982 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,894 psi | 54% | 1893 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 92% | 39,479 psi | 67% | 2044 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 98% | 40,248 psi | 69% | 2159 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 82% | 30,255 psi | 52% | 1936 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 84% | 32,445 psi | 55% | 1988 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 37,826 psi | 64% | 1975 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,583 psi | 40% | 1152 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 28,703 psi | 49% | 1952 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 31,778 psi | 54% | 1906 fps | 99.3% |
| IMR 4227 | <<locked>> | 80% | 42,540 psi | 72% | 2021 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 43,772 psi | 75% | 2152 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 82% | 35,462 psi | 60% | 2028 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 92% | 39,958 psi | 68% | 2106 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 96% | 34,650 psi | 59% | 2067 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 41,989 psi | 71% | 1991 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,446 psi | 57% | 1972 fps | 99.6% |
| Norma 202 | <<locked>> | 92% | 32,706 psi | 56% | 2001 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,308 psi | 40% | 1178 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,453 psi | 72% | 2057 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 36,361 psi | 62% | 2037 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 88% | 32,445 psi | 55% | 1955 fps | 95% |
| Shooters World AR Plus | <<locked>> | 82% | 35,462 psi | 60% | 2028 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 96% | 34,650 psi | 59% | 2067 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 44,918 psi | 76% | 2129 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,972 psi | 66% | 1831 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 33,228 psi | 57% | 1998 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 30,095 psi | 51% | 1903 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 33,953 psi | 58% | 1939 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 30,821 psi | 52% | 1896 fps | 95.5% |
| Somchem S321 | <<locked>> | 94% | 40,872 psi | 70% | 2139 fps | 95.2% |
| Somchem S335 | <<locked>> | 88% | 30,690 psi | 52% | 1903 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 48,994 psi | 83% | 2001 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,433 psi | 60% | 1952 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,471 psi | 48% | 1841 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 26,469 psi | 45% | 1804 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 86% | 24,497 psi | 42% | 1831 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 92% | 31,241 psi | 53% | 1946 fps | 95% |
| Vihtavuori N530 | <<locked>> | 96% | 41,423 psi | 71% | 2113 fps | 95% |
| Vihtavuori N540 | <<locked>> | 96% | 33,808 psi | 58% | 2014 fps | 95.3% |
| Winchester 748 | <<locked>> | 96% | 39,537 psi | 67% | 2136 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 55 powders for 6.8 mm Rem. SPC loaded with the .277 | 150gr | Hornady InterLock. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,352 fps; across all powders the maximum-charge window runs from 1,289 fps to 2,352 fps. Accurate 2015 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:13.5 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. Hodgdon CFE223, ReloadSwiss RS 52, Hodgdon H4895 rank at the top here: for 6.8 mm Rem. SPC with the .277 | 150gr | Hornady InterLock 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.