Load Specifications
Load data in caliber 9 mm Mauser with .357 | 158gr | X-TREME RP HP bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Vihtavuori N350 and SNPE Vectan BA7 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 ≥ 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% | 32,416 psi | 86% | 1086 fps | 100% |
| Accurate No. 5² | <<locked>> | 64% | 33,750 psi | 90% | 1178 fps | 97.6% |
| Accurate Solo 1000² | <<locked>> | 76% | 32,677 psi | 87% | 1010 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 33,881 psi | 90% | 1076 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 32,111 psi | 85% | 1155 fps | 95.6% |
| ADI AP 70N² | <<locked>> | 68% | 32,605 psi | 86% | 1073 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 32,314 psi | 86% | 912 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 33,156 psi | 88% | 951 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 32,503 psi | 86% | 981 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 32,184 psi | 85% | 1017 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 32,082 psi | 85% | 1050 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 72% | 31,604 psi | 84% | 1109 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 31,691 psi | 84% | 1017 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 31,444 psi | 83% | 1112 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 84% | 33,533 psi | 89% | 1214 fps | 95.7% |
| Alliant RED DOT | <<locked>> | 80% | 33,025 psi | 88% | 1004 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 32,880 psi | 87% | 1129 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 33,736 psi | 89% | 1142 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 31,256 psi | 83% | 1001 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 31,285 psi | 83% | 1020 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 30,574 psi | 81% | 1024 fps | 100% |
| Hodgdon Clays | <<locked>> | 84% | 33,011 psi | 88% | 948 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 32,039 psi | 85% | 1142 fps | 98.5% |
| Hodgdon Longshot² | <<locked>> | 64% | 31,053 psi | 82% | 1125 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 15,418 psi | 41% | 761 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 33,808 psi | 90% | 1086 fps | 100% |
| Lovex D036² | <<locked>> | 64% | 33,692 psi | 89% | 1178 fps | 97.6% |
| Lovex S011² | <<locked>> | 68% | 33,968 psi | 90% | 1050 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 34,026 psi | 90% | 1106 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 30,864 psi | 82% | 1040 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 30,705 psi | 81% | 1047 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 32,866 psi | 87% | 1040 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 32,489 psi | 86% | 1017 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 33,025 psi | 88% | 981 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 32,097 psi | 85% | 1122 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 32,547 psi | 86% | 1138 fps | 99.4% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 33,982 psi | 90% | 1063 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,605 psi | 39% | 771 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 31,401 psi | 83% | 1115 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 88% | 33,968 psi | 90% | 1214 fps | 90.2% |
| Rottweil P 801² | <<locked>> | 64% | 31,821 psi | 84% | 1010 fps | 100% |
| Rottweil P 806 | <<locked>> | 92% | 31,328 psi | 83% | 1227 fps | 99.1% |
| Shooters World Auto Pistol² | <<locked>> | 64% | 33,692 psi | 89% | 1178 fps | 97.6% |
| SNPE Vectan A0 | <<locked>> | 84% | 31,850 psi | 84% | 1076 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 32,184 psi | 85% | 1043 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 31,096 psi | 82% | 1047 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 31,836 psi | 84% | 938 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 32,648 psi | 87% | 1132 fps | 99.1% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 33,489 psi | 89% | 1079 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 80% | 33,098 psi | 88% | 1220 fps | 97.2% |
| Somchem MP200² | <<locked>> | 76% | 32,779 psi | 87% | 1119 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 32,184 psi | 85% | 1093 fps | 100% |
| Somchem S221*² | <<locked>> | 72% | 32,648 psi | 87% | 1171 fps | 92.8% |
| Vihtavuori 3N37 | <<locked>> | 84% | 32,590 psi | 86% | 1155 fps | 99.6% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 31,473 psi | 83% | 1171 fps | 89.8% |
| Vihtavuori N105*ᴾ | <<locked>> | 100% | 26,107 psi | 69% | 1145 fps | 91.1% |
| Vihtavuori N320² | <<locked>> | 72% | 31,415 psi | 83% | 1014 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 27,180 psi | 72% | 909 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 32,837 psi | 87% | 1083 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 32,285 psi | 86% | 1096 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 30,763 psi | 82% | 1129 fps | 99.5% |
| Winchester 231² | <<locked>> | 64% | 31,531 psi | 84% | 1040 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 33,199 psi | 88% | 1086 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 20,001 psi | 53% | 912 fps | 98.1% |
| Accurate No. 5² | <<locked>> | 60% | 29,675 psi | 79% | 1125 fps | 96.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 22,220 psi | 59% | 886 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 18,115 psi | 48% | 869 fps | 100% |
| ADI AP 100*² | <<locked>> | 76% | 18,318 psi | 49% | 928 fps | 87% |
| ADI AP 70N² | <<locked>> | 60% | 26,049 psi | 69% | 994 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 24,337 psi | 65% | 823 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 23,409 psi | 62% | 843 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 21,857 psi | 58% | 853 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 22,989 psi | 61% | 906 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 18,985 psi | 50% | 883 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 22,931 psi | 61% | 988 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 21,727 psi | 58% | 889 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 14,069 psi | 37% | 814 fps | 96.6% |
| Alliant POWER PISTOL*² | <<locked>> | 64% | 19,043 psi | 51% | 968 fps | 86.7% |
| Alliant RED DOT² | <<locked>> | 60% | 21,089 psi | 56% | 856 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 26,179 psi | 69% | 1040 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 18,536 psi | 49% | 912 fps | 99.1% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 20,363 psi | 54% | 866 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 13,764 psi | 37% | 774 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 22,031 psi | 58% | 919 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 19,377 psi | 51% | 784 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 24,743 psi | 66% | 1037 fps | 95.9% |
| Hodgdon Longshot² | <<locked>> | 60% | 27,311 psi | 72% | 1076 fps | 98.3% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,325 psi | 22% | 584 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 22,118 psi | 59% | 938 fps | 100% |
| Lovex D036² | <<locked>> | 60% | 29,689 psi | 79% | 1125 fps | 96.3% |
| Lovex S011² | <<locked>> | 60% | 26,542 psi | 70% | 968 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 20,943 psi | 56% | 938 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 17,492 psi | 46% | 850 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 18,681 psi | 50% | 886 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 19,957 psi | 53% | 876 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 21,147 psi | 56% | 879 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 24,192 psi | 64% | 879 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 25,164 psi | 67% | 1030 fps | 99.8% |
| Ramshot True Blue² | <<locked>> | 60% | 28,558 psi | 76% | 1089 fps | 98.7% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 24,860 psi | 66% | 958 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,861 psi | 21% | 577 fps | 99% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 16,650 psi | 44% | 896 fps | 99.6% |
| ReloadSwiss RS 24* | <<locked>> | 80% | 27,441 psi | 73% | 1119 fps | 86.6% |
| Rottweil P 801² | <<locked>> | 60% | 28,413 psi | 75% | 974 fps | 100% |
| Rottweil P 806*² | 6.1 gr | 60% | 12,082 psi | 32% | 860 fps | 85.5% |
| Shooters World Auto Pistol² | <<locked>> | 60% | 29,689 psi | 79% | 1125 fps | 96.3% |
| SNPE Vectan A0² | <<locked>> | 60% | 17,419 psi | 46% | 860 fps | 98.4% |
| SNPE Vectan A1² | <<locked>> | 60% | 21,408 psi | 57% | 909 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 20,581 psi | 55% | 906 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 25,686 psi | 68% | 869 fps | 100% |
| SNPE Vectan BA7 1/2*² | 4.5 gr | 60% | 15,127 psi | 40% | 837 fps | 89.7% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 20,262 psi | 54% | 906 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 17,999 psi | 48% | 968 fps | 88.3% |
| Somchem MP200² | <<locked>> | 60% | 21,277 psi | 56% | 958 fps | 99.3% |
| Somchem MS200² | <<locked>> | 60% | 19,667 psi | 52% | 912 fps | 99.7% |
| Somchem S221*² | <<locked>> | 60% | 22,118 psi | 59% | 1007 fps | 86.4% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 16,795 psi | 45% | 899 fps | 92.9% |
| Vihtavuori 3N38* | <<locked>> | 92% | 25,991 psi | 69% | 1093 fps | 86.7% |
| Vihtavuori N105* | <<locked>> | 88% | 19,464 psi | 52% | 1020 fps | 85.3% |
| Vihtavuori N320² | <<locked>> | 60% | 22,017 psi | 58% | 902 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 12,546 psi | 33% | 689 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 20,842 psi | 55% | 935 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 18,637 psi | 49% | 902 fps | 99.3% |
| Vihtavuori N350*² | 4.4 gr | 60% | 14,663 psi | 39% | 850 fps | 91.2% |
| Winchester 231² | <<locked>> | 60% | 28,137 psi | 75% | 1004 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,333 psi | 49% | 883 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* 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 63 powders for 9 mm Mauser loaded with the .357 | 158gr | X-TREME RP HP. Rottweil P 806 delivers the highest muzzle velocity at 1,227 fps; across all powders the maximum-charge window runs from 761 fps to 1,227 fps. ADI AP 100 gives the best case fill at 100 %, and 29 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 39–90 %, 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. Rottweil P 806, Vihtavuori N350, SNPE Vectan BA7 1/2 rank at the top here: for 9 mm Mauser with the .357 | 158gr | X-TREME RP HP they combine a high case fill with complete burn and sit in the upper velocity band. 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.