Load Specifications
Load data in caliber 8.6 mm Blackout with .338 | 200gr | Barnes X S bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World AR Plus, Lovex D073.4 and SNPE Vectan SP 10.
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% | 54,447 psi | 88% | 2185 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 50,981 psi | 82% | 2211 fps | 99.1% |
| Accurate 2460 | <<locked>> | 98% | 53,447 psi | 86% | 2257 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 40,263 psi | 65% | 2116 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 94% | 54,665 psi | 88% | 2188 fps | 98.6% |
| Accurate LT-32 | <<locked>> | 94% | 55,143 psi | 89% | 2195 fps | 97% |
| ADI AR 2207 | <<locked>> | 92% | 54,737 psi | 88% | 2234 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 55,927 psi | 90% | 2310 fps | 98.6% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,123 psi | 76% | 2234 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 98% | 54,926 psi | 89% | 2274 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 90% | 53,635 psi | 87% | 2205 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 56,014 psi | 90% | 2221 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 98% | 53,664 psi | 87% | 2283 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 98% | 55,143 psi | 89% | 2303 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 90% | 53,693 psi | 87% | 2188 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,953 psi | 53% | 1325 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,657 psi | 72% | 2205 fps | 97.4% |
| IMR 4198 | <<locked>> | 98% | 55,898 psi | 90% | 2251 fps | 100% |
| IMR 4227 | <<locked>> | 86% | 53,925 psi | 87% | 2165 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 54,433 psi | 88% | 2274 fps | 96.5% |
| Lovex S053 | <<locked>> | 88% | 55,883 psi | 90% | 2162 fps | 100% |
| Norma 200 | <<locked>> | 94% | 56,043 psi | 90% | 2267 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,750 psi | 53% | 1355 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 54,099 psi | 87% | 2198 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 53,592 psi | 86% | 2257 fps | 96.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2215 fps | 96.6% |
| Shooters World AR Plus | <<locked>> | 92% | 54,433 psi | 88% | 2274 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 53,519 psi | 86% | 2014 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 94% | 52,953 psi | 85% | 2267 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 55,724 psi | 90% | 2280 fps | 99.2% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,617 psi | 80% | 2146 fps | 96.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,964 psi | 77% | 2149 fps | 97.1% |
| Vihtavuori N110 | <<locked>> | 82% | 55,259 psi | 89% | 2083 fps | 100% |
| Vihtavuori N120 | <<locked>> | 92% | 54,636 psi | 88% | 2198 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 55,448 psi | 89% | 2231 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,312 psi | 78% | 2152 fps | 98.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,770 psi | 66% | 2110 fps | 97.5% |
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% | 42,772 psi | 69% | 2028 fps | 98.7% |
| Accurate 2015 | <<locked>> | 86% | 34,316 psi | 55% | 1946 fps | 95.5% |
| Accurate 2460 | <<locked>> | 94% | 46,978 psi | 76% | 2169 fps | 95.6% |
| Accurate 2495 | <<locked>> | 94% | 33,562 psi | 54% | 1995 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 82% | 38,885 psi | 63% | 1955 fps | 95.3% |
| Accurate LT-32 | <<locked>> | 88% | 46,746 psi | 75% | 2080 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 38,754 psi | 63% | 2014 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 41,075 psi | 66% | 2093 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 82% | 28,166 psi | 45% | 1870 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,069 psi | 53% | 1929 fps | 96.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 40,335 psi | 65% | 2014 fps | 98.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 39,291 psi | 63% | 1988 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 88% | 39,784 psi | 64% | 2070 fps | 95.1% |
| Hodgdon H335 | <<locked>> | 92% | 45,672 psi | 74% | 2172 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 40,495 psi | 65% | 1991 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,352 psi | 39% | 1178 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 37,797 psi | 61% | 2083 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 34,418 psi | 56% | 1923 fps | 97.8% |
| IMR 4227 | <<locked>> | 80% | 45,672 psi | 74% | 2057 fps | 100% |
| Lovex D073.4 | 36.8 gr | 88% | 47,601 psi | 77% | 2182 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 45,034 psi | 73% | 2028 fps | 100% |
| Norma 200 | <<locked>> | 80% | 37,666 psi | 61% | 2001 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,366 psi | 39% | 1207 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 45,397 psi | 73% | 2083 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 50,415 psi | 81% | 2215 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 96% | 45,774 psi | 74% | 2136 fps | 95.4% |
| Shooters World AR Plus | 36.8 gr | 88% | 47,601 psi | 77% | 2182 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,843 psi | 67% | 1873 fps | 100% |
| SNPE Vectan SP 10 | 36.7 gr | 88% | 43,961 psi | 71% | 2139 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 37,217 psi | 60% | 2001 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 44,150 psi | 71% | 2067 fps | 95.1% |
| Somchem S335 | <<locked>> | 94% | 40,524 psi | 65% | 2034 fps | 95.2% |
| Vihtavuori N110 | <<locked>> | 80% | 52,257 psi | 84% | 2051 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 38,899 psi | 63% | 1988 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 31,705 psi | 51% | 1860 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 88% | 34,664 psi | 56% | 1929 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 94% | 34,505 psi | 56% | 1995 fps | 95.6% |
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 37 powders for 8.6 mm Blackout loaded with the .338 | 200gr | Barnes X S. ADI AR 2219 delivers the highest muzzle velocity at 2,310 fps; across all powders the maximum-charge window runs from 1,325 fps to 2,310 fps. Accurate 2015 gives the best case fill at 100 %, and 37 of the 37 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 200.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Alliant AR-Comp 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. Shooters World AR Plus, Lovex D073.4, SNPE Vectan SP 10 rank at the top here: for 8.6 mm Blackout with the .338 | 200gr | Barnes X S 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.