Load Specifications
Load data in caliber 9 mm Para with .358 | 120gr | Rim Rock TC Cowboy bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, ReloadSwiss RS 20 and Hodgdon Universal.
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: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 84% | 28,979 psi | 85% | 1099 fps | 95.6% |
| Accurate Solo 1000 | <<locked>> | 84% | 28,964 psi | 85% | 1056 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 29,486 psi | 87% | 1115 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 28,326 psi | 83% | 1115 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 30,661 psi | 90% | 974 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 29,008 psi | 85% | 988 fps | 100% |
| ADI AS 30 | <<locked>> | 84% | 29,341 psi | 86% | 1040 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 28,703 psi | 84% | 1073 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 30,052 psi | 88% | 1119 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 28,718 psi | 84% | 1142 fps | 98.5% |
| Alliant Green Dot | <<locked>> | 84% | 28,253 psi | 83% | 1070 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 23,960 psi | 70% | 1076 fps | 96.2% |
| Alliant RED DOT | <<locked>> | 88% | 29,399 psi | 86% | 1060 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 30,153 psi | 88% | 1165 fps | 98.4% |
| Alliant UNIQUE | <<locked>> | 92% | 28,587 psi | 84% | 1155 fps | 98.1% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 28,108 psi | 82% | 1056 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 23,569 psi | 69% | 1020 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 26,701 psi | 78% | 1066 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 88% | 29,399 psi | 86% | 1122 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 30,168 psi | 89% | 1001 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 29,689 psi | 87% | 1102 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 76% | 28,369 psi | 83% | 1138 fps | 89% |
| Hodgdon Longshot*² | <<locked>> | 72% | 28,166 psi | 83% | 1138 fps | 91.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 9,863 psi | 29% | 715 fps | 98.8% |
| Hodgdon Universal | <<locked>> | 84% | 28,326 psi | 83% | 1115 fps | 100% |
| Lovex S011² | <<locked>> | 72% | 27,615 psi | 81% | 1060 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 28,964 psi | 85% | 1129 fps | 99.3% |
| Maxam CSB 1 | <<locked>> | 96% | 28,747 psi | 84% | 1102 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 30,211 psi | 89% | 1148 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 28,413 psi | 83% | 1083 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 30,777 psi | 90% | 1093 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 29,849 psi | 88% | 1040 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 28,094 psi | 82% | 1135 fps | 96% |
| Ramshot True Blue*² | <<locked>> | 72% | 29,936 psi | 88% | 1158 fps | 92.1% |
| Ramshot Zip² | <<locked>> | 64% | 28,500 psi | 84% | 1093 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 28,253 psi | 83% | 1112 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 9,007 psi | 26% | 705 fps | 94.4% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 28,471 psi | 84% | 1165 fps | 99.4% |
| Rottweil P 801² | <<locked>> | 76% | 29,486 psi | 87% | 1089 fps | 100% |
| SNPE Vectan A0 | <<locked>> | 96% | 30,574 psi | 90% | 1132 fps | 98.3% |
| SNPE Vectan A1 | <<locked>> | 84% | 30,037 psi | 88% | 1102 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 28,877 psi | 85% | 1096 fps | 99.8% |
| SNPE Vectan BA10² | <<locked>> | 76% | 30,414 psi | 89% | 1004 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 28,311 psi | 83% | 1122 fps | 90.3% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 29,095 psi | 85% | 1115 fps | 100% |
| Somchem MP200 | <<locked>> | 88% | 30,806 psi | 90% | 1168 fps | 97.7% |
| Somchem MS200 | <<locked>> | 92% | 30,385 psi | 89% | 1145 fps | 99% |
| Vihtavuori 3N37* | <<locked>> | 96% | 29,472 psi | 86% | 1168 fps | 92.4% |
| Vihtavuori N310² | <<locked>> | 64% | 27,905 psi | 82% | 991 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 30,139 psi | 88% | 1099 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 18,826 psi | 55% | 899 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 27,238 psi | 80% | 1115 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 30,356 psi | 89% | 1148 fps | 98.6% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 27,586 psi | 81% | 1138 fps | 91.7% |
| Winchester 231² | <<locked>> | 72% | 28,500 psi | 84% | 1093 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 27,369 psi | 80% | 1132 fps | 89.9% |
| Winchester AutoComp | <<locked>> | 92% | 27,775 psi | 81% | 1106 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 64% | 16,375 psi | 48% | 886 fps | 86.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 16,389 psi | 48% | 860 fps | 99.9% |
| Accurate Solo 1250*² | <<locked>> | 60% | 12,357 psi | 36% | 804 fps | 92.6% |
| ADI AP 70N² | <<locked>> | 60% | 17,869 psi | 52% | 942 fps | 98.2% |
| ADI APS 350² | <<locked>> | 60% | 19,493 psi | 57% | 833 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 17,840 psi | 52% | 837 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 16,244 psi | 48% | 846 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 16,433 psi | 48% | 876 fps | 99.8% |
| Alliant BE-86² | <<locked>> | 60% | 12,589 psi | 37% | 817 fps | 95.7% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 17,071 psi | 50% | 928 fps | 92% |
| Alliant Green Dot² | <<locked>> | 60% | 15,360 psi | 45% | 853 fps | 99.6% |
| Alliant Herco*² | <<locked>> | 72% | 12,285 psi | 36% | 820 fps | 85.1% |
| Alliant RED DOT² | <<locked>> | 60% | 15,229 psi | 45% | 840 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 19,261 psi | 57% | 978 fps | 93% |
| Alliant UNIQUE*² | 3.4 gr | 60% | 12,589 psi | 37% | 827 fps | 85.5% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 14,373 psi | 42% | 827 fps | 98.4% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 8,717 psi | 26% | 705 fps | 94.5% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 14,489 psi | 43% | 863 fps | 99.1% |
| Hodgdon CFE Pistol*² | <<locked>> | 60% | 13,663 psi | 40% | 843 fps | 93.6% |
| Hodgdon Clays² | <<locked>> | 60% | 14,953 psi | 44% | 784 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 26,005 psi | 76% | 1053 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 72% | 25,367 psi | 74% | 1093 fps | 87.1% |
| Hodgdon Longshot*² | <<locked>> | 64% | 21,451 psi | 63% | 1027 fps | 86.5% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,033 psi | 15% | 522 fps | 89.4% |
| Hodgdon Universal² | 3.4 gr | 60% | 15,360 psi | 45% | 886 fps | 96.5% |
| Lovex S011² | <<locked>> | 60% | 19,435 psi | 57% | 932 fps | 99.2% |
| Lovex S020*² | <<locked>> | 60% | 13,692 psi | 40% | 853 fps | 90.2% |
| Maxam CSB 1*² | <<locked>> | 60% | 11,966 psi | 35% | 787 fps | 92.2% |
| Maxam CSB 2² | <<locked>> | 60% | 11,458 psi | 34% | 820 fps | 97% |
| Maxam CSB 3² | <<locked>> | 60% | 13,938 psi | 41% | 833 fps | 98.1% |
| Maxam CSB 4² | <<locked>> | 60% | 14,866 psi | 44% | 846 fps | 99.8% |
| Maxam CSB 5² | <<locked>> | 60% | 17,172 psi | 50% | 866 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 17,056 psi | 50% | 935 fps | 88.3% |
| Ramshot True Blue*² | <<locked>> | 64% | 22,916 psi | 67% | 1050 fps | 87.8% |
| Ramshot Zip² | <<locked>> | 60% | 24,961 psi | 73% | 1043 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 15,447 psi | 45% | 909 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 72% | 5,831 psi | 17% | 571 fps | 86.6% |
| ReloadSwiss RS 20*² | 3.7 gr | 64% | 11,951 psi | 35% | 827 fps | 86.6% |
| Rottweil P 801² | <<locked>> | 60% | 19,116 psi | 56% | 948 fps | 100% |
| SNPE Vectan A0*² | <<locked>> | 64% | 13,851 psi | 41% | 827 fps | 87% |
| SNPE Vectan A1² | <<locked>> | 60% | 15,418 psi | 45% | 863 fps | 97.2% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 14,779 psi | 43% | 846 fps | 93.1% |
| SNPE Vectan BA10² | <<locked>> | 60% | 20,059 psi | 59% | 869 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 88% | 20,958 psi | 61% | 1001 fps | 85.1% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 14,446 psi | 42% | 853 fps | 94.7% |
| Somchem MP200*² | <<locked>> | 60% | 14,156 psi | 42% | 860 fps | 85.9% |
| Somchem MS200*² | <<locked>> | 60% | 13,503 psi | 40% | 830 fps | 88.2% |
| Vihtavuori 3N37* | <<locked>> | 84% | 21,277 psi | 62% | 1040 fps | 87% |
| Vihtavuori N310² | <<locked>> | 60% | 24,947 psi | 73% | 955 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 14,852 psi | 44% | 866 fps | 99.9% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 7,542 psi | 22% | 646 fps | 99.3% |
| Vihtavuori N330² | <<locked>> | 60% | 13,213 psi | 39% | 860 fps | 95.5% |
| Vihtavuori N340*² | <<locked>> | 60% | 12,314 psi | 36% | 810 fps | 85.5% |
| Vihtavuori N350* | <<locked>> | 88% | 20,566 psi | 60% | 1020 fps | 86.6% |
| Winchester 231² | <<locked>> | 60% | 19,769 psi | 58% | 958 fps | 99.2% |
| Winchester 572*² | <<locked>> | 60% | 24,265 psi | 71% | 1083 fps | 87.8% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,270 psi | 36% | 807 fps | 91% |
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 35 powders for 9 mm Para loaded with the .358 | 120gr | Rim Rock TC Cowboy. Somchem MP200 delivers the highest muzzle velocity at 1,168 fps; across all powders the maximum-charge window runs from 705 fps to 1,168 fps. Alliant Herco gives the best case fill at 100 %, and 35 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 26–90 %, leaving at least 10 % headroom. Alliant Herco, Baschieri & Pellagri 102 Pistol, 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. Alliant UNIQUE, ReloadSwiss RS 20, Hodgdon Universal rank at the top here: for 9 mm Para with the .358 | 120gr | Rim Rock TC Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ReloadSwiss RS 14, Vihtavuori 3N37, Vihtavuori N350 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.