Load Specifications
Load data in caliber 9 x 57 Mauser with .357 | 180gr | Nosler SILH bullet and 17 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, Accurate 2015 and Vihtavuori N135.
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% | 35,549 psi | 88% | 2487 fps | 97.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 30,879 psi | 76% | 2470 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 82% | 34,534 psi | 85% | 2454 fps | 100% |
| Alliant AR-Comp | <<locked>> | 96% | 35,331 psi | 87% | 2559 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 88% | 34,360 psi | 85% | 2477 fps | 98.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 36,143 psi | 89% | 2451 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 36,318 psi | 89% | 2425 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,516 psi | 75% | 1621 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 35,955 psi | 89% | 2579 fps | 96.3% |
| IMR 4198 | <<locked>> | 86% | 35,128 psi | 87% | 2441 fps | 98.9% |
| Norma 200 | <<locked>> | 86% | 36,289 psi | 89% | 2507 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,255 psi | 75% | 1663 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 35,665 psi | 88% | 2484 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 82% | 34,853 psi | 86% | 2421 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 35,665 psi | 88% | 2444 fps | 98.1% |
| Vihtavuori N133 | <<locked>> | 94% | 34,925 psi | 86% | 2434 fps | 96.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,113 psi | 84% | 2507 fps | 97% |
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 | 42.8 gr | 88% | 29,167 psi | 72% | 2343 fps | 95.1% |
| Accurate 2495 | <<locked>> | 98% | 28,660 psi | 71% | 2418 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 32,213 psi | 79% | 2402 fps | 99.8% |
| Alliant AR-Comp | 42.3 gr | 86% | 25,541 psi | 63% | 2300 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 26,426 psi | 65% | 2280 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,823 psi | 83% | 2402 fps | 98.3% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 33,953 psi | 84% | 2375 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,220 psi | 55% | 1447 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 33,663 psi | 83% | 2523 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 29,341 psi | 72% | 2300 fps | 97.2% |
| Norma 200 | <<locked>> | 80% | 29,573 psi | 73% | 2356 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,930 psi | 54% | 1483 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 33,591 psi | 83% | 2438 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 32,503 psi | 80% | 2375 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 27,485 psi | 68% | 2254 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 90% | 30,864 psi | 76% | 2343 fps | 95.4% |
| Vihtavuori N135 | 46.2 gr | 96% | 30,052 psi | 74% | 2408 fps | 95.5% |
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 17 powders for 9 x 57 Mauser loaded with the .357 | 180gr | Nosler SILH. IMR 3031 delivers the highest muzzle velocity at 2,579 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,579 fps. Accurate 2495 gives the best case fill at 100 %, and 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 75–89 %, leaving at least 11 % headroom. 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, Accurate 2015, Vihtavuori N135 rank at the top here: for 9 x 57 Mauser with the .357 | 180gr | Nosler SILH 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.