Load Specifications
Load data in caliber 9.3 x 57 with .366 | 220gr | Brenneke TUG Nature bullet and 29 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and Hodgdon H322.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 94% | 37,405 psi | 86% | 2283 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,808 psi | 75% | 2277 fps | 97.9% |
| Accurate LT-30 | <<locked>> | 84% | 37,231 psi | 86% | 2185 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 84% | 38,464 psi | 88% | 2277 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 39,102 psi | 90% | 2339 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 98% | 39,305 psi | 90% | 2392 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 38,392 psi | 88% | 2313 fps | 99.4% |
| Alliant Reloder-7 | <<locked>> | 82% | 37,681 psi | 87% | 2238 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 37,695 psi | 87% | 2221 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 90% | 37,797 psi | 87% | 2313 fps | 96.9% |
| Hodgdon H335 | <<locked>> | 90% | 38,319 psi | 88% | 2329 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 82% | 38,754 psi | 89% | 2221 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,169 psi | 72% | 1450 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 37,434 psi | 86% | 2365 fps | 97.7% |
| IMR 4198 | <<locked>> | 88% | 38,711 psi | 89% | 2267 fps | 99.8% |
| Norma 200 | <<locked>> | 86% | 38,348 psi | 88% | 2297 fps | 99.7% |
| Norma 202 | <<locked>> | 98% | 38,000 psi | 87% | 2329 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,850 psi | 71% | 1483 fps | 100% |
| Rottweil R 901 | <<locked>> | 96% | 39,276 psi | 90% | 2316 fps | 96% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 39,276 psi | 90% | 2339 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 37,086 psi | 85% | 2270 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 39,363 psi | 90% | 2257 fps | 96% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,592 psi | 82% | 2205 fps | 96% |
| Somchem S335 | <<locked>> | 96% | 37,724 psi | 87% | 2260 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 84% | 38,711 psi | 89% | 2241 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 37,101 psi | 85% | 2234 fps | 99% |
| Vihtavuori N133 | <<locked>> | 96% | 38,638 psi | 89% | 2270 fps | 98.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,665 psi | 82% | 2300 fps | 98.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,638 psi | 89% | 2313 fps | 96.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 27,180 psi | 62% | 2067 fps | 95.2% |
| Accurate 2495 | <<locked>> | 94% | 26,789 psi | 62% | 2146 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 32,938 psi | 76% | 2100 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 34,040 psi | 78% | 2198 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 34,098 psi | 78% | 2238 fps | 95.7% |
| Alliant AR-Comp | 36.6 gr | 80% | 22,379 psi | 51% | 1982 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,050 psi | 64% | 2096 fps | 96.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,404 psi | 81% | 2195 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,864 psi | 71% | 2083 fps | 95.1% |
| Hodgdon H322 | 40.6 gr | 86% | 33,214 psi | 76% | 2221 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 88% | 35,810 psi | 82% | 2280 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 36,448 psi | 84% | 2178 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,756 psi | 52% | 1293 fps | 100% |
| IMR 3031 | 42 gr | 92% | 30,908 psi | 71% | 2224 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 30,589 psi | 70% | 2103 fps | 98.4% |
| Norma 200 | <<locked>> | 80% | 31,546 psi | 73% | 2165 fps | 98.6% |
| Norma 202 | <<locked>> | 96% | 35,462 psi | 82% | 2280 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,640 psi | 52% | 1325 fps | 100% |
| Rottweil R 901 | <<locked>> | 94% | 36,985 psi | 85% | 2274 fps | 95.4% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 36,477 psi | 84% | 2287 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 30,966 psi | 71% | 2142 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 36,927 psi | 85% | 2215 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 33,504 psi | 77% | 2165 fps | 95.3% |
| Somchem S335 | <<locked>> | 92% | 33,214 psi | 76% | 2172 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 34,258 psi | 79% | 2169 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,354 psi | 63% | 2028 fps | 96.2% |
| Vihtavuori N133 | <<locked>> | 86% | 28,471 psi | 65% | 2060 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 92% | 27,804 psi | 64% | 2126 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 98% | 36,158 psi | 83% | 2267 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 29 powders for 9.3 x 57 loaded with the .366 | 220gr | Brenneke TUG Nature. Alliant AR-Comp delivers the highest muzzle velocity at 2,392 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,392 fps. Accurate 2495 gives the best case fill at 100 %, and 29 of the 29 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.366" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Hodgdon TrailBoss, ReloadSwiss RS 14 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. Alliant AR-Comp, IMR 3031, Hodgdon H322 rank at the top here: for 9.3 x 57 with the .366 | 220gr | Brenneke TUG Nature 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.