Load Specifications
Load data in caliber 9 x 22 MJR with .358 | 130gr | Rim Rock RNFP Cowboy bullet and 61 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N350, ReloadSwiss RS 20 and Alliant UNIQUE.
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: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 80% | 31,952 psi | 86% | 1184 fps | 99.3% |
| Accurate No. 5*² | <<locked>> | 68% | 33,243 psi | 90% | 1273 fps | 93.9% |
| Accurate Solo 1000 | <<locked>> | 80% | 31,894 psi | 86% | 1112 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 31,618 psi | 85% | 1168 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 27,456 psi | 74% | 1184 fps | 88.8% |
| ADI AP 70N² | <<locked>> | 72% | 30,893 psi | 84% | 1178 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 31,749 psi | 86% | 1007 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 33,359 psi | 90% | 1056 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 31,560 psi | 85% | 1083 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 33,011 psi | 89% | 1145 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 33,431 psi | 90% | 1184 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 76% | 30,995 psi | 84% | 1214 fps | 100% |
| Alliant Green Dot | <<locked>> | 84% | 32,489 psi | 88% | 1142 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 28,747 psi | 78% | 1188 fps | 99.8% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 31,560 psi | 85% | 1289 fps | 90.4% |
| Alliant RED DOT | <<locked>> | 84% | 31,865 psi | 86% | 1109 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 31,966 psi | 86% | 1227 fps | 100% |
| Alliant UNIQUE | <<locked>> | 88% | 31,546 psi | 85% | 1234 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 33,199 psi | 90% | 1135 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 29,298 psi | 79% | 1115 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 32,909 psi | 89% | 1161 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 31,821 psi | 86% | 1191 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 31,676 psi | 86% | 1040 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 72% | 31,125 psi | 84% | 1230 fps | 95% |
| Hodgdon Longshot² | <<locked>> | 68% | 30,313 psi | 82% | 1220 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,024 psi | 33% | 784 fps | 100% |
| Hodgdon Universal | <<locked>> | 80% | 30,893 psi | 84% | 1178 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 33,185 psi | 90% | 1273 fps | 93.9% |
| Lovex S011² | <<locked>> | 72% | 32,750 psi | 89% | 1148 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 32,126 psi | 87% | 1204 fps | 100% |
| Maxam CSB 1 | <<locked>> | 92% | 31,923 psi | 86% | 1168 fps | 100% |
| Maxam CSB 2 | <<locked>> | 88% | 30,690 psi | 83% | 1171 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 33,460 psi | 90% | 1165 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 31,140 psi | 84% | 1119 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 32,300 psi | 87% | 1086 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 30,980 psi | 84% | 1217 fps | 99.4% |
| Ramshot True Blue² | <<locked>> | 68% | 31,894 psi | 86% | 1237 fps | 96.9% |
| ReloadSwiss RS 12² | <<locked>> | 76% | 31,662 psi | 86% | 1168 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,994 psi | 30% | 781 fps | 99.3% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 32,430 psi | 88% | 1250 fps | 100% |
| Rottweil P 801² | <<locked>> | 72% | 32,532 psi | 88% | 1142 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 30,574 psi | 83% | 1332 fps | 95.6% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 33,185 psi | 90% | 1273 fps | 93.9% |
| SNPE Vectan A0 | <<locked>> | 92% | 32,692 psi | 88% | 1201 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 80% | 31,227 psi | 84% | 1145 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 33,431 psi | 90% | 1188 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 30,792 psi | 83% | 1030 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 96% | 30,995 psi | 84% | 1214 fps | 95.9% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 32,198 psi | 87% | 1181 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 30,618 psi | 83% | 1296 fps | 92.1% |
| Somchem MP200 | <<locked>> | 80% | 30,792 psi | 83% | 1207 fps | 99.7% |
| Somchem MS200 | <<locked>> | 84% | 30,763 psi | 83% | 1188 fps | 100% |
| Vihtavuori 3N37 | <<locked>> | 88% | 30,560 psi | 83% | 1234 fps | 96.8% |
| Vihtavuori N310² | <<locked>> | 64% | 32,605 psi | 88% | 1056 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 32,082 psi | 87% | 1138 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 22,800 psi | 62% | 968 fps | 100% |
| Vihtavuori N330 | <<locked>> | 80% | 31,140 psi | 84% | 1184 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 32,851 psi | 89% | 1217 fps | 100% |
| Vihtavuori N350 | <<locked>> | 96% | 32,256 psi | 87% | 1253 fps | 97.6% |
| Winchester 231² | <<locked>> | 68% | 30,647 psi | 83% | 1148 fps | 100% |
| Winchester AutoComp | <<locked>> | 88% | 30,937 psi | 84% | 1178 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 17,274 psi | 47% | 942 fps | 92.8% |
| Accurate No. 5*² | <<locked>> | 60% | 24,932 psi | 67% | 1142 fps | 89.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 19,029 psi | 51% | 932 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,389 psi | 42% | 906 fps | 98.7% |
| ADI AP 100* | <<locked>> | 92% | 22,640 psi | 61% | 1096 fps | 85.3% |
| ADI AP 70N² | <<locked>> | 60% | 21,901 psi | 59% | 1043 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 21,799 psi | 59% | 883 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,726 psi | 56% | 899 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 19,406 psi | 52% | 915 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 20,088 psi | 54% | 965 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,737 psi | 43% | 915 fps | 99.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 20,030 psi | 54% | 1027 fps | 97.8% |
| Alliant Green Dot² | <<locked>> | 60% | 18,115 psi | 49% | 928 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,255 psi | 30% | 814 fps | 88.6% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 25,208 psi | 68% | 1181 fps | 86.4% |
| Alliant RED DOT² | <<locked>> | 60% | 17,608 psi | 48% | 902 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 22,771 psi | 62% | 1083 fps | 98.4% |
| Alliant UNIQUE*² | 4.1 gr | 60% | 15,243 psi | 41% | 932 fps | 93.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 17,622 psi | 48% | 919 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,544 psi | 29% | 781 fps | 99.4% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,173 psi | 49% | 958 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 27,746 psi | 75% | 1138 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 16,940 psi | 46% | 833 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 21,118 psi | 57% | 1063 fps | 89.1% |
| Hodgdon Longshot*² | <<locked>> | 60% | 23,279 psi | 63% | 1106 fps | 92.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 5,729 psi | 15% | 571 fps | 95.8% |
| Hodgdon Universal² | <<locked>> | 60% | 18,521 psi | 50% | 978 fps | 99.9% |
| Lovex D036*² | <<locked>> | 60% | 24,889 psi | 67% | 1142 fps | 89.4% |
| Lovex S011² | <<locked>> | 60% | 23,583 psi | 64% | 1030 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 17,303 psi | 47% | 965 fps | 97.5% |
| Maxam CSB 1² | <<locked>> | 60% | 14,127 psi | 38% | 869 fps | 98% |
| Maxam CSB 2² | <<locked>> | 60% | 14,199 psi | 38% | 906 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 16,491 psi | 45% | 912 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 18,565 psi | 50% | 938 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 20,566 psi | 56% | 932 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 21,176 psi | 57% | 1056 fps | 96.1% |
| Ramshot True Blue*² | <<locked>> | 60% | 23,830 psi | 64% | 1109 fps | 93.2% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,377 psi | 52% | 994 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,555 psi | 15% | 568 fps | 90.7% |
| ReloadSwiss RS 20*² | 4.2 gr | 60% | 13,039 psi | 35% | 892 fps | 93.7% |
| Rottweil P 801² | <<locked>> | 60% | 22,872 psi | 62% | 1017 fps | 100% |
| Rottweil P 806* | <<locked>> | 84% | 17,869 psi | 48% | 1099 fps | 86.8% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 24,889 psi | 67% | 1142 fps | 89.4% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,881 psi | 40% | 886 fps | 93% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,623 psi | 50% | 955 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 17,811 psi | 48% | 945 fps | 98.6% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,771 psi | 62% | 928 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 17,158 psi | 46% | 965 fps | 86.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 17,274 psi | 47% | 945 fps | 99.3% |
| SNPE Vectan SP 2*² | <<locked>> | 76% | 23,395 psi | 63% | 1171 fps | 87.5% |
| Somchem MP200*² | <<locked>> | 60% | 17,840 psi | 48% | 981 fps | 94.6% |
| Somchem MS200² | <<locked>> | 60% | 16,027 psi | 43% | 925 fps | 95.5% |
| Vihtavuori 3N37*² | <<locked>> | 64% | 15,055 psi | 41% | 942 fps | 85.8% |
| Vihtavuori N310² | <<locked>> | 60% | 28,456 psi | 77% | 1010 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 18,782 psi | 51% | 958 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 9,398 psi | 25% | 712 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 17,158 psi | 46% | 971 fps | 99.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 15,461 psi | 42% | 922 fps | 94.3% |
| Vihtavuori N350*² | 5.1 gr | 68% | 14,373 psi | 39% | 922 fps | 85.3% |
| Winchester 231² | <<locked>> | 60% | 24,395 psi | 66% | 1063 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,040 psi | 41% | 906 fps | 97.7% |
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 61 powders for 9 x 22 MJR loaded with the .358 | 130gr | Rim Rock RNFP Cowboy. Rottweil P 806 delivers the highest muzzle velocity at 1,332 fps; across all powders the maximum-charge window runs from 781 fps to 1,332 fps. ADI AP 100 gives the best case fill at 100 %, and 42 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (255 MPa), the top charges use 30–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant Herco, Baschieri & Pellagri 102 Pistol 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 N350, ReloadSwiss RS 20, Alliant UNIQUE rank at the top here: for 9 x 22 MJR with the .358 | 130gr | Rim Rock RNFP Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, ADI AP 100, Alliant POWER PISTOL 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.