Load Specifications
Load data in caliber 9 x 57 Mauser with .358 | 200gr | NorthFork Bonded Core bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 4064, Alliant AR-Comp and IMR 3031.
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>> | 86% | 36,187 psi | 89% | 2392 fps | 98.9% |
| Accurate 2460 | <<locked>> | 84% | 36,666 psi | 90% | 2421 fps | 96.4% |
| Accurate 2495 | <<locked>> | 94% | 35,969 psi | 89% | 2461 fps | 99.2% |
| Accurate 2520 | <<locked>> | 88% | 36,709 psi | 90% | 2461 fps | 96% |
| Accurate 4064 | <<locked>> | 96% | 35,969 psi | 89% | 2474 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 88% | 35,433 psi | 87% | 2461 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 35,418 psi | 87% | 2411 fps | 97.3% |
| Hodgdon H335 | <<locked>> | 82% | 35,853 psi | 88% | 2425 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,619 psi | 80% | 1591 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 35,969 psi | 89% | 2484 fps | 98.3% |
| Norma 202 | <<locked>> | 90% | 36,680 psi | 90% | 2444 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,692 psi | 81% | 1631 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 36,172 psi | 89% | 2392 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 35,099 psi | 86% | 2320 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 36,027 psi | 89% | 2362 fps | 97.5% |
| Somchem S335 | <<locked>> | 88% | 36,201 psi | 89% | 2369 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 82% | 35,317 psi | 87% | 2333 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 86% | 34,708 psi | 85% | 2333 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 92% | 35,085 psi | 86% | 2425 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 90% | 34,809 psi | 86% | 2382 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 92% | 35,491 psi | 87% | 2411 fps | 96% |
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>> | 80% | 30,153 psi | 74% | 2257 fps | 97.4% |
| Accurate 2460 | <<locked>> | 82% | 34,403 psi | 85% | 2372 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 24,178 psi | 60% | 2172 fps | 95.3% |
| Accurate 2520 | <<locked>> | 86% | 34,200 psi | 84% | 2408 fps | 95.1% |
| Accurate 4064 | 49.8 gr | 92% | 31,604 psi | 78% | 2379 fps | 95.6% |
| Alliant AR-Comp | 42.8 gr | 80% | 27,485 psi | 68% | 2267 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 33,185 psi | 82% | 2362 fps | 96.6% |
| Hodgdon H335 | <<locked>> | 80% | 33,504 psi | 83% | 2372 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,120 psi | 59% | 1421 fps | 100% |
| IMR 3031 | 43.9 gr | 82% | 28,137 psi | 69% | 2287 fps | 95.4% |
| Norma 202 | <<locked>> | 86% | 32,300 psi | 80% | 2346 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,105 psi | 59% | 1457 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 34,214 psi | 84% | 2346 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 33,054 psi | 81% | 2277 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 30,153 psi | 74% | 2228 fps | 95.4% |
| Somchem S335 | <<locked>> | 82% | 30,255 psi | 75% | 2234 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 33,301 psi | 82% | 2290 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 80% | 28,935 psi | 71% | 2198 fps | 96.7% |
| Vihtavuori N135 | <<locked>> | 82% | 25,614 psi | 63% | 2188 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 88% | 32,735 psi | 81% | 2336 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 90% | 33,373 psi | 82% | 2365 fps | 95.3% |
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 53 powders for 9 x 57 Mauser loaded with the .358 | 200gr | NorthFork Bonded Core. IMR 3031 delivers the highest muzzle velocity at 2,484 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,484 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 80–90 %, leaving at least 10 % headroom. 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. Accurate 4064, Alliant AR-Comp, IMR 3031 rank at the top here: for 9 x 57 Mauser with the .358 | 200gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2206H, ADI Benchmark 8208, Alliant Power Pro 1200-R 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.