Load Specifications
Load data in caliber 8.6 mm Blackout with .338 | 210gr | Impala RNFP KO bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2219, 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>> | 86% | 52,982 psi | 85% | 2116 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 53,258 psi | 86% | 2185 fps | 99.6% |
| Accurate 2460 | <<locked>> | 98% | 55,941 psi | 90% | 2234 fps | 98% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,554 psi | 69% | 2100 fps | 98.5% |
| Accurate 2520ᴾ | <<locked>> | 100% | 52,199 psi | 84% | 2224 fps | 96.9% |
| Accurate LT-30 | <<locked>> | 92% | 53,548 psi | 86% | 2123 fps | 98.9% |
| Accurate LT-32 | <<locked>> | 92% | 54,099 psi | 87% | 2129 fps | 97.4% |
| ADI AR 2207 | <<locked>> | 90% | 53,476 psi | 86% | 2162 fps | 100% |
| ADI AR 2219 | <<locked>> | 94% | 54,766 psi | 88% | 2244 fps | 98.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2211 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 96% | 54,201 psi | 87% | 2208 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 90% | 55,622 psi | 90% | 2172 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 54,926 psi | 89% | 2159 fps | 99.2% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2188 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 98% | 55,956 psi | 90% | 2257 fps | 99% |
| Hodgdon H335 | <<locked>> | 96% | 53,824 psi | 87% | 2234 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 90% | 55,506 psi | 90% | 2159 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,228 psi | 54% | 1296 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 46,673 psi | 75% | 2185 fps | 98.4% |
| IMR 4198 | <<locked>> | 96% | 54,897 psi | 89% | 2182 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 55,695 psi | 90% | 2129 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 53,505 psi | 86% | 2208 fps | 97% |
| Lovex D073.5 | <<locked>> | 98% | 55,709 psi | 90% | 2231 fps | 96.6% |
| Lovex S053 | <<locked>> | 86% | 54,636 psi | 88% | 2093 fps | 100% |
| Norma 200 | <<locked>> | 92% | 54,940 psi | 89% | 2198 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 47,674 psi | 77% | 2152 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,083 psi | 53% | 1325 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 56,014 psi | 90% | 2165 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 55,825 psi | 90% | 2234 fps | 97.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 53,142 psi | 86% | 2192 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 90% | 53,505 psi | 86% | 2208 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 55,100 psi | 89% | 1975 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 55,230 psi | 89% | 2244 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 54,534 psi | 88% | 2208 fps | 99.4% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 51,590 psi | 83% | 2123 fps | 97.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,466 psi | 67% | 1998 fps | 96.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 49,951 psi | 81% | 2126 fps | 98% |
| Vihtavuori N120 | <<locked>> | 90% | 53,476 psi | 86% | 2126 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 54,636 psi | 88% | 2165 fps | 99.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,328 psi | 81% | 2126 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,714 psi | 69% | 2093 fps | 98.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,194 psi | 73% | 2096 fps | 96.5% |
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% | 44,266 psi | 71% | 2001 fps | 99.3% |
| Accurate 2015 | <<locked>> | 82% | 31,937 psi | 52% | 1850 fps | 95.3% |
| Accurate 2460 | <<locked>> | 90% | 43,555 psi | 70% | 2067 fps | 95.5% |
| Accurate 2495 | <<locked>> | 90% | 31,633 psi | 51% | 1906 fps | 95.6% |
| Accurate 2520 | <<locked>> | 96% | 45,643 psi | 74% | 2136 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 38,174 psi | 62% | 1896 fps | 95.8% |
| Accurate LT-32 | <<locked>> | 84% | 43,163 psi | 70% | 1978 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 40,321 psi | 65% | 1985 fps | 100% |
| ADI AR 2219 | 33.1 gr | 82% | 37,855 psi | 61% | 1988 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 27,644 psi | 45% | 1814 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,461 psi | 56% | 1909 fps | 97.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,814 psi | 67% | 1985 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,143 psi | 58% | 1886 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 96% | 49,617 psi | 80% | 2113 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 86% | 38,957 psi | 63% | 2008 fps | 95.6% |
| Hodgdon H335 | 36.7 gr | 88% | 41,959 psi | 68% | 2064 fps | 95.3% |
| Hodgdon H4198 | <<locked>> | 80% | 41,858 psi | 68% | 1969 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,584 psi | 40% | 1152 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 35,230 psi | 57% | 1985 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 35,621 psi | 57% | 1900 fps | 98.6% |
| IMR 4227 | <<locked>> | 80% | 47,181 psi | 76% | 2024 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 46,760 psi | 75% | 2116 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 94% | 49,226 psi | 79% | 2149 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 46,514 psi | 75% | 1995 fps | 100% |
| Norma 200 | <<locked>> | 80% | 39,233 psi | 63% | 1978 fps | 99.1% |
| Norma 202 | <<locked>> | 96% | 42,496 psi | 69% | 2073 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,627 psi | 40% | 1181 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,021 psi | 76% | 2054 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 46,499 psi | 75% | 2110 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 92% | 42,743 psi | 69% | 2037 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 86% | 46,760 psi | 75% | 2116 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 43,091 psi | 70% | 1841 fps | 100% |
| SNPE Vectan SP 10 | 35.9 gr | 86% | 43,207 psi | 70% | 2077 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,447 psi | 56% | 1900 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 41,162 psi | 66% | 1975 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 39,320 psi | 63% | 1965 fps | 95.6% |
| Somchem S335 | <<locked>> | 90% | 37,840 psi | 61% | 1942 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 40,451 psi | 65% | 1959 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,938 psi | 53% | 1841 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 84% | 32,198 psi | 52% | 1837 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 90% | 32,169 psi | 52% | 1903 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 40,321 psi | 65% | 2021 fps | 95.2% |
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 42 powders for 8.6 mm Blackout loaded with the .338 | 210gr | Impala RNFP KO. Hodgdon H322 delivers the highest muzzle velocity at 2,257 fps; across all powders the maximum-charge window runs from 1,296 fps to 2,257 fps. Accurate 2015 gives the best case fill at 100 %, and 42 of the 42 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 210.0 gr projectile in 0.338" 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. ADI AR 2219, SNPE Vectan SP 10, Hodgdon H335 rank at the top here: for 8.6 mm Blackout with the .338 | 210gr | Impala RNFP KO 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.