Load Specifications
Load data in caliber 9 mm Mauser with .357 | 158gr | X-TREME RNFP bullet and 59 powders. The key underlying parameters are shown in the table above.
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 ≥ 60% and propellant combustion ≥ 80%. 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: 5.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 33,678 psi | 89% | 1119 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 76% | 33,228 psi | 88% | 1033 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 32,837 psi | 87% | 1083 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 34,026 psi | 90% | 1204 fps | 97% |
| ADI AP 70N² | <<locked>> | 64% | 30,806 psi | 82% | 1070 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 33,286 psi | 88% | 938 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 31,299 psi | 83% | 951 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 33,286 psi | 88% | 1004 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 32,764 psi | 87% | 1040 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 34,026 psi | 90% | 1086 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 68% | 30,893 psi | 82% | 1119 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 33,547 psi | 89% | 1050 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 33,011 psi | 88% | 1148 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 31,923 psi | 85% | 1214 fps | 95.8% |
| Alliant RED DOT² | <<locked>> | 76% | 32,576 psi | 86% | 1017 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 30,792 psi | 82% | 1119 fps | 100% |
| Alliant UNIQUE | <<locked>> | 80% | 32,721 psi | 87% | 1145 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 32,808 psi | 87% | 1033 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 33,228 psi | 88% | 1056 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 32,837 psi | 87% | 1060 fps | 100% |
| Hodgdon Clays | <<locked>> | 84% | 33,518 psi | 89% | 971 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 30,371 psi | 81% | 1142 fps | 98.5% |
| Hodgdon Longshot² | <<locked>> | 64% | 33,402 psi | 89% | 1175 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,244 psi | 43% | 784 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 31,865 psi | 85% | 1083 fps | 100% |
| Lovex S011² | <<locked>> | 64% | 31,821 psi | 84% | 1043 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 31,647 psi | 84% | 1096 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 33,286 psi | 88% | 1083 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 33,475 psi | 89% | 1089 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 30,937 psi | 82% | 1037 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 33,054 psi | 88% | 1040 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 33,823 psi | 90% | 1004 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 33,750 psi | 90% | 1158 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 32,140 psi | 85% | 1060 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,331 psi | 41% | 797 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 33,663 psi | 89% | 1158 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 32,692 psi | 87% | 1220 fps | 90.6% |
| Rottweil P 801² | <<locked>> | 64% | 32,445 psi | 86% | 1033 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 30,951 psi | 82% | 1240 fps | 99.3% |
| SNPE Vectan A0 | <<locked>> | 84% | 32,779 psi | 87% | 1106 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 31,038 psi | 82% | 1050 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 33,083 psi | 88% | 1086 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 32,445 psi | 86% | 961 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 31,836 psi | 84% | 1145 fps | 99.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 32,416 psi | 86% | 1083 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 31,517 psi | 84% | 1220 fps | 97.2% |
| Somchem MP200² | <<locked>> | 72% | 30,603 psi | 81% | 1112 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 31,212 psi | 83% | 1099 fps | 100% |
| Somchem S221*² | <<locked>> | 68% | 30,748 psi | 82% | 1168 fps | 92.8% |
| Vihtavuori 3N37 | <<locked>> | 84% | 33,968 psi | 90% | 1191 fps | 99.9% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 33,910 psi | 90% | 1227 fps | 92% |
| Vihtavuori N105*ᴾ | <<locked>> | 100% | 28,514 psi | 76% | 1207 fps | 93.6% |
| Vihtavuori N320² | <<locked>> | 72% | 32,082 psi | 85% | 1037 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 28,601 psi | 76% | 938 fps | 100% |
| Vihtavuori N330² | <<locked>> | 72% | 30,748 psi | 82% | 1076 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 33,402 psi | 89% | 1125 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 32,256 psi | 86% | 1168 fps | 99.9% |
| Winchester 231² | <<locked>> | 64% | 32,837 psi | 87% | 1073 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 31,879 psi | 85% | 1089 fps | 100% |
Start Load - Barrel Length: 5.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 21,582 psi | 57% | 958 fps | 99.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,250 psi | 62% | 912 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 18,971 psi | 50% | 896 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,201 psi | 43% | 896 fps | 85.6% |
| ADI AP 70N² | <<locked>> | 60% | 27,630 psi | 73% | 1030 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,730 psi | 68% | 856 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 23,424 psi | 62% | 856 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 23,090 psi | 61% | 883 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 24,047 psi | 64% | 935 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 20,305 psi | 54% | 915 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 24,642 psi | 65% | 1030 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 22,800 psi | 60% | 919 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,634 psi | 39% | 840 fps | 97.5% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 18,072 psi | 48% | 965 fps | 86.6% |
| Alliant RED DOT² | <<locked>> | 60% | 22,466 psi | 60% | 889 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 27,673 psi | 73% | 1079 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,015 psi | 53% | 958 fps | 99.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 21,321 psi | 57% | 892 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 14,489 psi | 38% | 797 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 22,916 psi | 61% | 945 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,523 psi | 54% | 817 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 26,136 psi | 69% | 1079 fps | 97.2% |
| Hodgdon Longshot² | <<locked>> | 60% | 28,718 psi | 76% | 1115 fps | 99.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,325 psi | 22% | 591 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 23,003 psi | 61% | 965 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 28,311 psi | 75% | 1004 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,510 psi | 60% | 978 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 18,333 psi | 49% | 879 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 19,740 psi | 52% | 915 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 20,929 psi | 56% | 906 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 22,278 psi | 59% | 909 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 25,454 psi | 68% | 912 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 26,150 psi | 69% | 1063 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 25,788 psi | 68% | 984 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 8,253 psi | 22% | 600 fps | 99.6% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 17,347 psi | 46% | 925 fps | 99.9% |
| ReloadSwiss RS 24*² | <<locked>> | 76% | 25,962 psi | 69% | 1119 fps | 86.7% |
| Rottweil P 801² | <<locked>> | 60% | 29,124 psi | 77% | 997 fps | 100% |
| Rottweil P 806*² | <<locked>> | 60% | 13,024 psi | 35% | 899 fps | 87.8% |
| SNPE Vectan A0² | <<locked>> | 60% | 18,014 psi | 48% | 889 fps | 99% |
| SNPE Vectan A1² | <<locked>> | 60% | 22,756 psi | 60% | 942 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 21,901 psi | 58% | 942 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 26,643 psi | 71% | 899 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 15,461 psi | 41% | 860 fps | 90.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,843 psi | 58% | 945 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 19,624 psi | 52% | 1017 fps | 90.6% |
| Somchem MP200² | <<locked>> | 60% | 22,524 psi | 60% | 994 fps | 99.8% |
| Somchem MS200² | <<locked>> | 60% | 20,349 psi | 54% | 942 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 23,902 psi | 63% | 1060 fps | 88.7% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 17,782 psi | 47% | 935 fps | 94.5% |
| Vihtavuori 3N38* | <<locked>> | 84% | 22,452 psi | 60% | 1053 fps | 85.1% |
| Vihtavuori N105* | <<locked>> | 84% | 18,565 psi | 49% | 1020 fps | 85.5% |
| Vihtavuori N320² | <<locked>> | 60% | 23,163 psi | 61% | 932 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,937 psi | 34% | 709 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 21,669 psi | 57% | 961 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 19,290 psi | 51% | 928 fps | 99.7% |
| Vihtavuori N350*² | <<locked>> | 60% | 15,156 psi | 40% | 876 fps | 92.5% |
| Winchester 231² | <<locked>> | 60% | 29,559 psi | 78% | 1037 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,855 psi | 50% | 906 fps | 100% |
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 59 powders for 9 mm Mauser loaded with the .357 | 158gr | X-TREME RNFP. Rottweil P 806 delivers the highest muzzle velocity at 1,240 fps; across all powders the maximum-charge window runs from 784 fps to 1,240 fps. ADI AP 100 gives the best case fill at 100 %, and 24 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 41–90 %, leaving at least 10 % headroom. ADI AP 100, 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. As outliers, ReloadSwiss RS 24, Somchem S221, Vihtavuori 3N38 burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.