Load Specifications
Load data in caliber 8.6 mm Blackout with .338 | 180gr | Woodleigh PP SN bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, ADI AR 2219 and Norma 200.
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>> | 90% | 55,651 psi | 88% | 2375 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 47,688 psi | 76% | 2339 fps | 98.3% |
| Accurate 2460ᴾ | <<locked>> | 100% | 53,476 psi | 85% | 2434 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 96% | 55,956 psi | 89% | 2379 fps | 98.4% |
| Accurate LT-32 | <<locked>> | 96% | 56,579 psi | 90% | 2385 fps | 96.8% |
| ADI APS 450 | <<locked>> | 82% | 56,826 psi | 90% | 1804 fps | 100% |
| ADI AR 2205 | <<locked>> | 82% | 54,201 psi | 86% | 2260 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 55,013 psi | 87% | 2421 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 56,913 psi | 90% | 2503 fps | 98.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 44,135 psi | 70% | 2362 fps | 99.6% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 55,158 psi | 87% | 2457 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 94% | 57,000 psi | 90% | 2428 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 53,809 psi | 85% | 2369 fps | 98.3% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 54,795 psi | 87% | 2474 fps | 98% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 56,289 psi | 89% | 2493 fps | 97.3% |
| Hodgdon H4198 | <<locked>> | 92% | 54,781 psi | 87% | 2379 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,894 psi | 51% | 1437 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 42,105 psi | 67% | 2329 fps | 96.1% |
| IMR 4198ᴾ | <<locked>> | 100% | 57,000 psi | 90% | 2444 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 54,911 psi | 87% | 2356 fps | 100% |
| Lovex D060 | <<locked>> | 82% | 54,433 psi | 86% | 2379 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 94% | 54,679 psi | 87% | 2454 fps | 96% |
| Lovex S053 | <<locked>> | 90% | 56,347 psi | 89% | 2352 fps | 100% |
| Norma 200 | <<locked>> | 96% | 55,579 psi | 88% | 2448 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,459 psi | 50% | 1463 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 54,549 psi | 86% | 2385 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 54,505 psi | 86% | 2448 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 94% | 54,679 psi | 87% | 2454 fps | 96% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 54,433 psi | 86% | 2379 fps | 99.9% |
| Shooters World SOCOM | <<locked>> | 82% | 55,869 psi | 89% | 2365 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 56,565 psi | 90% | 2221 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 53,635 psi | 85% | 2454 fps | 96.7% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 56,507 psi | 90% | 2470 fps | 99% |
| Somchem S335ᴾ | <<locked>> | 100% | 45,020 psi | 71% | 2274 fps | 95.9% |
| Vihtavuori N110 | <<locked>> | 84% | 55,564 psi | 88% | 2270 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 55,085 psi | 87% | 2382 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 52,823 psi | 84% | 2375 fps | 99.5% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 45,919 psi | 73% | 2287 fps | 97.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,927 psi | 60% | 2224 fps | 96.1% |
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% | 40,205 psi | 64% | 2149 fps | 97.8% |
| Accurate 2015 | <<locked>> | 90% | 35,085 psi | 56% | 2123 fps | 95.1% |
| Accurate 2460 | <<locked>> | 98% | 49,922 psi | 79% | 2385 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 86% | 41,394 psi | 66% | 2162 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 92% | 50,067 psi | 79% | 2297 fps | 95.4% |
| ADI APS 450 | <<locked>> | 80% | 54,636 psi | 87% | 1778 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 51,140 psi | 81% | 2224 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 35,766 psi | 57% | 2126 fps | 99.5% |
| ADI AR 2219 | 40.2 gr | 90% | 43,845 psi | 69% | 2306 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 88% | 30,458 psi | 48% | 2083 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 31,705 psi | 50% | 2060 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 37,159 psi | 59% | 2123 fps | 97.6% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 39,320 psi | 62% | 2146 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 92% | 42,293 psi | 67% | 2280 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 94% | 45,905 psi | 73% | 2343 fps | 95% |
| Hodgdon H4198 | <<locked>> | 84% | 43,105 psi | 68% | 2201 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,250 psi | 37% | 1273 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 39,349 psi | 62% | 2280 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 32,082 psi | 51% | 2031 fps | 96.4% |
| IMR 4227 | <<locked>> | 80% | 43,105 psi | 68% | 2188 fps | 99.8% |
| Lovex D060 | <<locked>> | 80% | 51,372 psi | 81% | 2336 fps | 99.8% |
| Lovex D073.4 | <<locked>> | 92% | 51,082 psi | 81% | 2405 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 42,395 psi | 67% | 2162 fps | 100% |
| Norma 200 | 33.8 gr | 80% | 33,721 psi | 53% | 2093 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,293 psi | 37% | 1309 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,598 psi | 68% | 2215 fps | 99.7% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 51,010 psi | 81% | 2398 fps | 95% |
| Shooters World AR Plus | <<locked>> | 92% | 51,082 psi | 81% | 2405 fps | 95.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 51,372 psi | 81% | 2336 fps | 99.8% |
| Shooters World SOCOM | <<locked>> | 80% | 52,359 psi | 83% | 2320 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,523 psi | 63% | 2008 fps | 100% |
| SNPE Vectan SP 10 | 42.5 gr | 92% | 47,137 psi | 75% | 2356 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 39,189 psi | 62% | 2205 fps | 95.6% |
| Somchem S335 | <<locked>> | 98% | 42,192 psi | 67% | 2224 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 49,530 psi | 79% | 2195 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,984 psi | 57% | 2103 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 84% | 32,648 psi | 52% | 2037 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 92% | 36,042 psi | 57% | 2116 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 98% | 35,708 psi | 57% | 2182 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 62 powders for 8.6 mm Blackout loaded with the .338 | 180gr | Woodleigh PP SN. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,510 fps; across all powders the maximum-charge window runs from 1,437 fps to 2,510 fps. Accurate 2015 gives the best case fill at 100 %, and 62 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (435 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.338" calls for a 1:6.0 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. SNPE Vectan SP 10, ADI AR 2219, Norma 200 rank at the top here: for 8.6 mm Blackout with the .338 | 180gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2230, Accurate 2520, ADI Benchmark 8208 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.