Load Specifications
Load data in caliber 9 mm Para with .358 | 125gr | Rim Rock RNFP Cowboy bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 20, Vihtavuori N340 and Somchem MS200.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 80% | 28,471 psi | 84% | 1093 fps | 96.7% |
| Accurate No. 5*² | <<locked>> | 68% | 30,429 psi | 89% | 1178 fps | 89.5% |
| Accurate Solo 1000 | <<locked>> | 80% | 29,109 psi | 85% | 1050 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 29,356 psi | 86% | 1106 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 30,835 psi | 90% | 1138 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 29,544 psi | 87% | 955 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 29,138 psi | 85% | 981 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 28,384 psi | 83% | 1017 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 30,211 psi | 89% | 1079 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 30,734 psi | 90% | 1115 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 76% | 28,703 psi | 84% | 1135 fps | 99.2% |
| Alliant Green Dot | <<locked>> | 84% | 29,747 psi | 87% | 1076 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 25,527 psi | 75% | 1096 fps | 97.9% |
| Alliant RED DOT | <<locked>> | 84% | 29,834 psi | 88% | 1056 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 28,689 psi | 84% | 1138 fps | 98.8% |
| Alliant UNIQUE | <<locked>> | 92% | 30,734 psi | 90% | 1178 fps | 99.3% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 30,690 psi | 90% | 1076 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 26,556 psi | 78% | 1050 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 30,081 psi | 88% | 1096 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 84% | 29,080 psi | 85% | 1112 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 30,211 psi | 89% | 994 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 72% | 28,471 psi | 84% | 1138 fps | 90.8% |
| Hodgdon Longshot*² | <<locked>> | 68% | 27,412 psi | 80% | 1125 fps | 92.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,095 psi | 33% | 741 fps | 99.9% |
| Hodgdon Universal | <<locked>> | 84% | 30,835 psi | 90% | 1138 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 30,429 psi | 89% | 1175 fps | 89.5% |
| Lovex S011² | <<locked>> | 72% | 30,182 psi | 89% | 1086 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 28,674 psi | 84% | 1119 fps | 99.7% |
| Maxam CSB 1 | <<locked>> | 92% | 29,820 psi | 87% | 1106 fps | 100% |
| Maxam CSB 2 | <<locked>> | 92% | 30,458 psi | 89% | 1138 fps | 100% |
| Maxam CSB 3 | <<locked>> | 84% | 28,514 psi | 84% | 1073 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 28,311 psi | 83% | 1053 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 28,906 psi | 85% | 1020 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 27,557 psi | 81% | 1122 fps | 96.9% |
| Ramshot True Blue*² | <<locked>> | 68% | 29,066 psi | 85% | 1145 fps | 93.3% |
| Ramshot Zip² | <<locked>> | 64% | 30,821 psi | 90% | 1112 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 76% | 27,557 psi | 81% | 1089 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,138 psi | 30% | 732 fps | 97.1% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 29,327 psi | 86% | 1168 fps | 99.9% |
| Rottweil P 801² | <<locked>> | 72% | 29,791 psi | 87% | 1083 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 26,063 psi | 76% | 1201 fps | 90.2% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 30,429 psi | 89% | 1175 fps | 89.5% |
| SNPE Vectan A0 | <<locked>> | 92% | 30,052 psi | 88% | 1122 fps | 99% |
| SNPE Vectan A1 | <<locked>> | 80% | 29,544 psi | 87% | 1089 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 30,676 psi | 90% | 1112 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 29,124 psi | 85% | 981 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 96% | 28,398 psi | 83% | 1122 fps | 92.1% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 30,153 psi | 88% | 1119 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 88% | 29,559 psi | 87% | 1224 fps | 88.3% |
| Somchem MP200 | <<locked>> | 80% | 28,079 psi | 82% | 1125 fps | 97.8% |
| Somchem MS200 | <<locked>> | 84% | 27,804 psi | 82% | 1106 fps | 99.1% |
| Vihtavuori 3N37* | <<locked>> | 92% | 29,646 psi | 87% | 1168 fps | 94% |
| Vihtavuori N310² | <<locked>> | 64% | 30,211 psi | 89% | 1004 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 29,008 psi | 85% | 1073 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 20,291 psi | 60% | 909 fps | 100% |
| Vihtavuori N330 | <<locked>> | 80% | 27,383 psi | 80% | 1106 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 29,834 psi | 88% | 1135 fps | 99.2% |
| Vihtavuori N350* | <<locked>> | 96% | 27,949 psi | 82% | 1142 fps | 93.5% |
| Winchester 231² | <<locked>> | 68% | 28,413 psi | 83% | 1083 fps | 100% |
| Winchester AutoComp | <<locked>> | 92% | 30,560 psi | 90% | 1132 fps | 100% |
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>> | 60% | 15,882 psi | 47% | 873 fps | 88.2% |
| Accurate No. 5*² | <<locked>> | 64% | 26,455 psi | 78% | 1115 fps | 87.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,043 psi | 53% | 886 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 13,750 psi | 40% | 833 fps | 95.5% |
| ADI AP 70N² | <<locked>> | 60% | 20,262 psi | 59% | 981 fps | 99.6% |
| ADI APS 350² | <<locked>> | 60% | 20,436 psi | 60% | 840 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 19,667 psi | 58% | 856 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 17,172 psi | 50% | 853 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 18,144 psi | 53% | 902 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 13,735 psi | 40% | 837 fps | 97.8% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 18,420 psi | 54% | 955 fps | 94.5% |
| Alliant Green Dot² | <<locked>> | 60% | 17,027 psi | 50% | 883 fps | 100% |
| Alliant Herco*² | <<locked>> | 68% | 12,169 psi | 36% | 810 fps | 86.6% |
| Alliant RED DOT² | <<locked>> | 60% | 16,244 psi | 48% | 853 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 20,508 psi | 60% | 997 fps | 95.2% |
| Alliant UNIQUE*² | <<locked>> | 60% | 13,822 psi | 41% | 856 fps | 89% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 15,824 psi | 46% | 853 fps | 99.6% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,297 psi | 27% | 719 fps | 96.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 16,027 psi | 47% | 886 fps | 99.9% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 14,881 psi | 44% | 866 fps | 96.1% |
| Hodgdon Clays² | <<locked>> | 60% | 15,766 psi | 46% | 791 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 21,466 psi | 63% | 1020 fps | 85.9% |
| Hodgdon Longshot*² | <<locked>> | 60% | 20,508 psi | 60% | 1007 fps | 87.5% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,265 psi | 15% | 528 fps | 91.7% |
| Hodgdon Universal² | <<locked>> | 60% | 16,810 psi | 49% | 912 fps | 98.4% |
| Lovex D036*² | <<locked>> | 64% | 26,397 psi | 77% | 1112 fps | 87% |
| Lovex S011² | <<locked>> | 60% | 21,944 psi | 64% | 971 fps | 100% |
| Lovex S020*² | <<locked>> | 60% | 15,795 psi | 46% | 896 fps | 94% |
| Maxam CSB 1² | <<locked>> | 60% | 13,256 psi | 39% | 817 fps | 95.1% |
| Maxam CSB 2² | <<locked>> | 60% | 13,024 psi | 38% | 850 fps | 99% |
| Maxam CSB 3² | <<locked>> | 60% | 15,447 psi | 45% | 860 fps | 99.5% |
| Maxam CSB 4² | <<locked>> | 60% | 16,549 psi | 49% | 873 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 19,247 psi | 56% | 889 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 18,710 psi | 55% | 965 fps | 91.5% |
| Ramshot True Blue*² | <<locked>> | 60% | 21,770 psi | 64% | 1024 fps | 88.6% |
| Ramshot Zip² | <<locked>> | 60% | 27,282 psi | 80% | 1070 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 17,274 psi | 51% | 932 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,134 psi | 15% | 528 fps | 85.7% |
| ReloadSwiss RS 20*² | 3.8 gr | 60% | 11,835 psi | 35% | 817 fps | 88.3% |
| Rottweil P 801² | <<locked>> | 60% | 20,943 psi | 61% | 965 fps | 100% |
| Rottweil P 806* | <<locked>> | 96% | 22,669 psi | 67% | 1145 fps | 87.6% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 26,397 psi | 77% | 1112 fps | 87% |
| SNPE Vectan A0*² | <<locked>> | 60% | 12,966 psi | 38% | 801 fps | 87.5% |
| SNPE Vectan A1² | <<locked>> | 60% | 16,592 psi | 49% | 883 fps | 98.8% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 15,853 psi | 47% | 866 fps | 95.4% |
| SNPE Vectan BA10² | <<locked>> | 60% | 21,843 psi | 64% | 889 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 19,203 psi | 56% | 965 fps | 85.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 15,737 psi | 46% | 879 fps | 96.9% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 26,513 psi | 78% | 1175 fps | 86.4% |
| Somchem MP200*² | <<locked>> | 60% | 15,940 psi | 47% | 896 fps | 89.8% |
| Somchem MS200*² | 3.7 gr | 60% | 14,649 psi | 43% | 856 fps | 91.3% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 18,811 psi | 55% | 984 fps | 86.5% |
| Vihtavuori N310² | <<locked>> | 60% | 27,238 psi | 80% | 971 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 16,679 psi | 49% | 892 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,325 psi | 24% | 663 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 14,649 psi | 43% | 886 fps | 97.8% |
| Vihtavuori N340*² | 3.8 gr | 60% | 13,460 psi | 39% | 837 fps | 88.9% |
| Vihtavuori N350* | <<locked>> | 80% | 18,057 psi | 53% | 968 fps | 86.1% |
| Winchester 231² | <<locked>> | 60% | 22,046 psi | 65% | 991 fps | 100% |
| Winchester AutoComp *² | <<locked>> | 60% | 13,271 psi | 39% | 827 fps | 93.8% |
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 27 powders for 9 mm Para loaded with the .358 | 125gr | Rim Rock RNFP Cowboy. Alliant UNIQUE delivers the highest muzzle velocity at 1,178 fps; across all powders the maximum-charge window runs from 732 fps to 1,178 fps. Alliant Herco gives the best case fill at 100 %, and 27 of the 27 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 30–90 %, 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. ReloadSwiss RS 20, Vihtavuori N340, Somchem MS200 rank at the top here: for 9 mm Para with the .358 | 125gr | Rim Rock RNFP Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, SNPE Vectan BA7 1/2, Vihtavuori 3N37, Vihtavuori N350 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1250, Alliant BE-86, Alliant Green Dot 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.