Load Specifications
Load data in caliber 9 x 57 Mauser with .355 | 100gr | Hornady FMJ bullet and 21 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N120, Lovex S053 and SNPE Vectan BA6 1/2.
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 |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 82% | 35,128 psi | 87% | 3018 fps | 97.2% |
| ADI AR 2205 | <<locked>> | 82% | 35,128 psi | 87% | 3018 fps | 97.2% |
| ADI AR 2205 | <<locked>> | 82% | 35,795 psi | 88% | 3048 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,889 psi | 64% | 2116 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,889 psi | 64% | 2116 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,121 psi | 64% | 2129 fps | 100% |
| Lovex S053 | <<locked>> | 92% | 35,650 psi | 88% | 3146 fps | 97.4% |
| Lovex S053 | <<locked>> | 92% | 35,650 psi | 88% | 3146 fps | 97.4% |
| Lovex S053 | <<locked>> | 92% | 36,608 psi | 90% | 3182 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,816 psi | 61% | 2156 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,816 psi | 61% | 2156 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,034 psi | 62% | 2172 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 34,998 psi | 86% | 3031 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 34,998 psi | 86% | 3031 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 36,056 psi | 89% | 3061 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 35,215 psi | 87% | 3117 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 35,215 psi | 87% | 3117 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 36,172 psi | 89% | 3150 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 34,418 psi | 85% | 3163 fps | 96.2% |
| Vihtavuori N120 | <<locked>> | 98% | 34,418 psi | 85% | 3163 fps | 96.2% |
| Vihtavuori N120 | <<locked>> | 98% | 35,389 psi | 87% | 3202 fps | 96.8% |
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 |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 80% | 32,880 psi | 81% | 2956 fps | 96.5% |
| ADI AR 2205 | <<locked>> | 80% | 32,880 psi | 81% | 2956 fps | 96.5% |
| ADI AR 2205 | <<locked>> | 80% | 33,533 psi | 83% | 2989 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,507 psi | 46% | 1893 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,507 psi | 46% | 1893 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,623 psi | 46% | 1906 fps | 100% |
| Lovex S053 | 40.3 gr | 86% | 29,530 psi | 73% | 2969 fps | 95.2% |
| Lovex S053 | 40.3 gr | 86% | 29,530 psi | 73% | 2969 fps | 95.2% |
| Lovex S053 | 40.3 gr | 86% | 30,429 psi | 75% | 3009 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,637 psi | 43% | 1926 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,637 psi | 43% | 1926 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,767 psi | 44% | 1939 fps | 100% |
| SNPE Vectan BA6 1/2 | 34.3 gr | 80% | 23,380 psi | 58% | 2700 fps | 99.1% |
| SNPE Vectan BA6 1/2 | 34.3 gr | 80% | 23,380 psi | 58% | 2700 fps | 99.1% |
| SNPE Vectan BA6 1/2 | 34.3 gr | 80% | 23,946 psi | 59% | 2726 fps | 99.3% |
| Vihtavuori N110 | <<locked>> | 80% | 29,095 psi | 72% | 2949 fps | 99.3% |
| Vihtavuori N110 | <<locked>> | 80% | 29,095 psi | 72% | 2949 fps | 99.3% |
| Vihtavuori N110 | <<locked>> | 80% | 29,834 psi | 73% | 2982 fps | 99.5% |
| Vihtavuori N120 | 46.8 gr | 96% | 32,430 psi | 80% | 3107 fps | 95.5% |
| Vihtavuori N120 | 46.8 gr | 96% | 32,430 psi | 80% | 3107 fps | 95.5% |
| Vihtavuori N120 | 45.9 gr | 94% | 31,270 psi | 77% | 3084 fps | 95.2% |
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 21 powders for 9 x 57 Mauser loaded with the .355 | 100gr | Hornady FMJ. Vihtavuori N120 delivers the highest muzzle velocity at 3,202 fps; across all powders the maximum-charge window runs from 2,116 fps to 3,202 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 21 of the 21 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, Hodgdon TrailBoss, Hodgdon TrailBoss 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. Vihtavuori N120, Lovex S053, SNPE Vectan BA6 1/2 rank at the top here: for 9 x 57 Mauser with the .355 | 100gr | Hornady FMJ 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.