Load Specifications
Load data in caliber 8.6 mm Blackout with .338 | 225gr | Hornady InterLock bullet and 53 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester 748, 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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Max Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 54,998 psi | 89% | 2083 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 51,140 psi | 82% | 2110 fps | 99.8% |
| Accurate 2460 | <<locked>> | 98% | 53,737 psi | 87% | 2159 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,885 psi | 63% | 2001 fps | 98.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 50,386 psi | 81% | 2152 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 94% | 55,535 psi | 90% | 2093 fps | 99.6% |
| Accurate LT-32 | <<locked>> | 94% | 56,057 psi | 90% | 2100 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 92% | 55,361 psi | 89% | 2123 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 53,679 psi | 87% | 2172 fps | 99.3% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 50,589 psi | 82% | 2116 fps | 95.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,790 psi | 77% | 2136 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 54,708 psi | 88% | 2238 fps | 96% |
| Alliant Reloder-10x | <<locked>> | 98% | 55,535 psi | 90% | 2169 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 53,722 psi | 87% | 2096 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 53,940 psi | 87% | 2093 fps | 99.5% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,998 psi | 87% | 2123 fps | 97% |
| Hodgdon H322 | <<locked>> | 98% | 55,013 psi | 89% | 2188 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 96% | 52,591 psi | 85% | 2165 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 90% | 54,462 psi | 88% | 2093 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,314 psi | 52% | 1250 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 45,107 psi | 73% | 2113 fps | 98.9% |
| IMR 4198 | <<locked>> | 96% | 54,056 psi | 87% | 2113 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 54,723 psi | 88% | 2060 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 50,589 psi | 82% | 2116 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 92% | 55,100 psi | 89% | 2178 fps | 98.1% |
| Lovex D073.5 | <<locked>> | 98% | 53,650 psi | 87% | 2159 fps | 97.2% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 44,019 psi | 71% | 2077 fps | 96.1% |
| Lovex S053 | <<locked>> | 86% | 53,113 psi | 86% | 2018 fps | 100% |
| Norma 200 | <<locked>> | 94% | 55,622 psi | 90% | 2152 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 45,963 psi | 74% | 2080 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,952 psi | 52% | 1276 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 54,723 psi | 88% | 2090 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 54,578 psi | 88% | 2165 fps | 97.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 50,053 psi | 81% | 2106 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 92% | 55,100 psi | 89% | 2178 fps | 98.1% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 44,019 psi | 71% | 2077 fps | 96.1% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 55,970 psi | 90% | 2146 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 53,751 psi | 87% | 1906 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 53,940 psi | 87% | 2175 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 53,461 psi | 86% | 2139 fps | 99.7% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,893 psi | 80% | 2054 fps | 97.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,769 psi | 64% | 1929 fps | 96.8% |
| Somchem S321ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2198 fps | 96.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,993 psi | 77% | 2051 fps | 98.4% |
| Vihtavuori N110 | <<locked>> | 82% | 55,172 psi | 89% | 1969 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 55,419 psi | 89% | 2087 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 53,084 psi | 86% | 2093 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2057 fps | 99.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,741 psi | 66% | 2014 fps | 98.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2024 fps | 97.1% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2126 fps | 95.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,930 psi | 68% | 2014 fps | 96.1% |
| Winchester 748ᴾ | <<locked>> | 100% | 49,313 psi | 80% | 2149 fps | 96.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 16"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 42,467 psi | 68% | 1929 fps | 99.5% |
| Accurate 2015 | <<locked>> | 82% | 29,022 psi | 47% | 1762 fps | 95.2% |
| Accurate 2460 | <<locked>> | 88% | 38,145 psi | 62% | 1942 fps | 95% |
| Accurate 2495 | <<locked>> | 90% | 27,630 psi | 45% | 1798 fps | 95% |
| Accurate 2520 | <<locked>> | 94% | 40,669 psi | 66% | 2018 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 36,477 psi | 59% | 1831 fps | 96.3% |
| Accurate LT-32 | <<locked>> | 84% | 41,640 psi | 67% | 1909 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 38,174 psi | 62% | 1906 fps | 100% |
| ADI AR 2219 | <<locked>> | 82% | 35,911 psi | 58% | 1916 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 98% | 47,834 psi | 77% | 2080 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 25,121 psi | 41% | 1726 fps | 95.9% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 51,169 psi | 83% | 2192 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,850 psi | 51% | 1824 fps | 97.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,392 psi | 64% | 1909 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,389 psi | 55% | 1818 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 94% | 45,121 psi | 73% | 2005 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 84% | 35,041 psi | 57% | 1900 fps | 95.4% |
| Hodgdon H335 | 35.9 gr | 86% | 37,681 psi | 61% | 1949 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 40,277 psi | 65% | 1900 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,540 psi | 38% | 1109 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 33,054 psi | 53% | 1909 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 33,910 psi | 55% | 1827 fps | 98.9% |
| IMR 4227 | <<locked>> | 80% | 45,818 psi | 74% | 1955 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 47,834 psi | 77% | 2080 fps | 95% |
| Lovex D073.4 | <<locked>> | 84% | 41,191 psi | 66% | 1991 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 92% | 43,482 psi | 70% | 2028 fps | 95% |
| Lovex D073.6 | <<locked>> | 98% | 41,104 psi | 66% | 2034 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 44,715 psi | 72% | 1919 fps | 100% |
| Norma 200 | <<locked>> | 80% | 35,897 psi | 58% | 1886 fps | 99.1% |
| Norma 202 | <<locked>> | 94% | 37,985 psi | 61% | 1959 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,380 psi | 38% | 1135 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,382 psi | 73% | 1982 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,090 psi | 68% | 1998 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 92% | 39,305 psi | 63% | 1949 fps | 95.5% |
| Shooters World AR Plus | <<locked>> | 84% | 41,191 psi | 66% | 1991 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 98% | 41,104 psi | 66% | 2034 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 52,417 psi | 85% | 2103 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,321 psi | 67% | 1772 fps | 100% |
| SNPE Vectan SP 10 | 35 gr | 84% | 38,508 psi | 62% | 1955 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,401 psi | 52% | 1827 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 39,059 psi | 63% | 1903 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 35,143 psi | 57% | 1854 fps | 95.4% |
| Somchem S321 | <<locked>> | 96% | 48,196 psi | 78% | 2106 fps | 95.4% |
| Somchem S335 | <<locked>> | 90% | 35,404 psi | 57% | 1864 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 51,967 psi | 84% | 1936 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,363 psi | 62% | 1880 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,530 psi | 49% | 1762 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 84% | 30,066 psi | 48% | 1762 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 90% | 29,704 psi | 48% | 1821 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 96% | 38,450 psi | 62% | 1949 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 98% | 48,283 psi | 78% | 2080 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 98% | 39,262 psi | 63% | 1975 fps | 95.3% |
| Winchester 748 | 40 gr | 98% | 45,803 psi | 74% | 2100 fps | 95.4% |
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 53 powders for 8.6 mm Blackout loaded with the .338 | 225gr | Hornady InterLock. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,238 fps; across all powders the maximum-charge window runs from 1,250 fps to 2,238 fps. Accurate 2015 gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:16.5 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. Winchester 748, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for 8.6 mm Blackout with the .338 | 225gr | Hornady InterLock they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.