Load Specifications
Load data in caliber 9 x 21 with .358 | 125gr | Rim Rock TC Top Shelf bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 20, Alliant UNIQUE 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.
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Max Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 80% | 28,036 psi | 82% | 1109 fps | 97.1% |
| Accurate No. 5*² | <<locked>> | 68% | 29,225 psi | 86% | 1188 fps | 89.8% |
| Accurate Solo 1000 | <<locked>> | 80% | 28,471 psi | 84% | 1063 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 27,485 psi | 81% | 1102 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 29,979 psi | 88% | 1155 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 28,834 psi | 85% | 965 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 29,936 psi | 88% | 1007 fps | 100% |
| ADI AS 30 | <<locked>> | 84% | 30,124 psi | 88% | 1060 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 29,312 psi | 86% | 1093 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 29,124 psi | 85% | 1122 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 30,632 psi | 90% | 1191 fps | 99.8% |
| Alliant Green Dot | <<locked>> | 84% | 28,863 psi | 85% | 1089 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 24,903 psi | 73% | 1115 fps | 98.3% |
| Alliant RED DOT | <<locked>> | 88% | 30,269 psi | 89% | 1083 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 28,253 psi | 83% | 1158 fps | 99.1% |
| Alliant UNIQUE | <<locked>> | 92% | 30,052 psi | 88% | 1198 fps | 99.5% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 28,834 psi | 85% | 1076 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 24,947 psi | 73% | 1053 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 28,732 psi | 84% | 1102 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 27,311 psi | 80% | 1119 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 29,617 psi | 87% | 1004 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 30,284 psi | 89% | 1122 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 76% | 30,356 psi | 89% | 1194 fps | 92.7% |
| Hodgdon Longshot*² | <<locked>> | 72% | 30,269 psi | 89% | 1194 fps | 94.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,182 psi | 30% | 741 fps | 99.8% |
| Hodgdon Universal | <<locked>> | 84% | 29,979 psi | 88% | 1155 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 29,182 psi | 86% | 1188 fps | 89.8% |
| Lovex S011² | <<locked>> | 72% | 29,689 psi | 87% | 1099 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 30,734 psi | 90% | 1171 fps | 100% |
| Maxam CSB 1 | <<locked>> | 96% | 30,487 psi | 89% | 1138 fps | 100% |
| Maxam CSB 2 | <<locked>> | 92% | 29,559 psi | 87% | 1152 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 30,400 psi | 89% | 1119 fps | 100% |
| Maxam CSB 4 | <<locked>> | 84% | 30,226 psi | 89% | 1099 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 28,094 psi | 82% | 1030 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 30,501 psi | 89% | 1191 fps | 98.4% |
| Ramshot True Blue*² | <<locked>> | 68% | 27,789 psi | 82% | 1155 fps | 93.5% |
| Ramshot Zip² | <<locked>> | 64% | 30,313 psi | 89% | 1132 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 28,935 psi | 85% | 1132 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,152 psi | 27% | 732 fps | 96.7% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 30,110 psi | 88% | 1207 fps | 100% |
| Rottweil P 801² | <<locked>> | 72% | 27,543 psi | 81% | 1079 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 23,888 psi | 70% | 1207 fps | 90.2% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 29,182 psi | 86% | 1188 fps | 89.8% |
| SNPE Vectan A0 | <<locked>> | 92% | 28,543 psi | 84% | 1125 fps | 99% |
| SNPE Vectan A1 | <<locked>> | 80% | 28,065 psi | 82% | 1093 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 30,400 psi | 89% | 1132 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 28,529 psi | 84% | 994 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 29,225 psi | 86% | 1161 fps | 93.3% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 30,806 psi | 90% | 1152 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 88% | 28,065 psi | 82% | 1234 fps | 88.6% |
| Somchem MP200 | <<locked>> | 84% | 29,805 psi | 87% | 1175 fps | 98.8% |
| Somchem MS200 | <<locked>> | 88% | 29,544 psi | 87% | 1155 fps | 99.7% |
| Vihtavuori 3N37* | <<locked>> | 92% | 28,268 psi | 83% | 1181 fps | 94.2% |
| Vihtavuori N310² | <<locked>> | 64% | 29,196 psi | 86% | 1014 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 28,195 psi | 83% | 1086 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 19,392 psi | 57% | 919 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 29,269 psi | 86% | 1155 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 29,399 psi | 86% | 1155 fps | 99.4% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 29,965 psi | 88% | 1198 fps | 95.3% |
| Winchester 231² | <<locked>> | 72% | 30,313 psi | 89% | 1132 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 29,791 psi | 87% | 1198 fps | 93.7% |
| Winchester AutoComp | <<locked>> | 92% | 30,139 psi | 88% | 1155 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% | 15,185 psi | 45% | 883 fps | 88.4% |
| Accurate No. 5*² | <<locked>> | 64% | 25,237 psi | 74% | 1122 fps | 87.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 17,231 psi | 51% | 892 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 12,923 psi | 38% | 840 fps | 95.6% |
| ADI AP 70N² | <<locked>> | 60% | 18,362 psi | 54% | 974 fps | 99.4% |
| ADI APS 350² | <<locked>> | 60% | 19,508 psi | 57% | 843 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 18,869 psi | 55% | 863 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 16,085 psi | 47% | 856 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 17,129 psi | 50% | 906 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 12,981 psi | 38% | 846 fps | 97.9% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 17,724 psi | 52% | 968 fps | 94.9% |
| Alliant Green Dot² | <<locked>> | 60% | 16,012 psi | 47% | 886 fps | 100% |
| Alliant Herco*² | <<locked>> | 68% | 11,327 psi | 33% | 817 fps | 86.6% |
| Alliant RED DOT² | <<locked>> | 60% | 15,127 psi | 44% | 853 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 19,841 psi | 58% | 1010 fps | 95.6% |
| Alliant UNIQUE*² | 3.6 gr | 60% | 12,937 psi | 38% | 863 fps | 88.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 14,982 psi | 44% | 860 fps | 99.6% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 8,470 psi | 25% | 719 fps | 96.3% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 15,316 psi | 45% | 899 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 24,149 psi | 71% | 1073 fps | 99.9% |
| Hodgdon Clays² | <<locked>> | 60% | 14,924 psi | 44% | 794 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 26,614 psi | 78% | 1076 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 20,218 psi | 59% | 1027 fps | 85.9% |
| Hodgdon Longshot*² | <<locked>> | 60% | 19,189 psi | 56% | 1010 fps | 87.4% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,757 psi | 14% | 531 fps | 91% |
| Hodgdon Universal² | <<locked>> | 60% | 14,997 psi | 44% | 899 fps | 97.9% |
| Lovex D036*² | <<locked>> | 64% | 25,193 psi | 74% | 1122 fps | 87.2% |
| Lovex S011² | <<locked>> | 60% | 20,189 psi | 59% | 965 fps | 99.9% |
| Lovex S020*² | <<locked>> | 60% | 14,141 psi | 41% | 886 fps | 93.3% |
| Maxam CSB 1² | <<locked>> | 60% | 12,415 psi | 36% | 820 fps | 95.1% |
| Maxam CSB 2² | <<locked>> | 60% | 11,966 psi | 35% | 853 fps | 98.9% |
| Maxam CSB 3² | <<locked>> | 60% | 14,576 psi | 43% | 866 fps | 99.5% |
| Maxam CSB 4² | <<locked>> | 60% | 15,679 psi | 46% | 879 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 18,275 psi | 54% | 896 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 18,101 psi | 53% | 981 fps | 92% |
| Ramshot True Blue*² | <<locked>> | 60% | 20,494 psi | 60% | 1030 fps | 88.6% |
| Ramshot Zip² | <<locked>> | 60% | 25,556 psi | 75% | 1070 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 16,085 psi | 47% | 938 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 68% | 4,844 psi | 14% | 545 fps | 85.8% |
| ReloadSwiss RS 20*² | 3.7 gr | 60% | 11,139 psi | 33% | 823 fps | 88.4% |
| Rottweil P 801² | <<locked>> | 60% | 19,783 psi | 58% | 974 fps | 100% |
| Rottweil P 806* | <<locked>> | 92% | 18,463 psi | 54% | 1102 fps | 85.3% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 25,193 psi | 74% | 1122 fps | 87.2% |
| SNPE Vectan A0*² | <<locked>> | 60% | 12,299 psi | 36% | 810 fps | 87.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 15,896 psi | 47% | 892 fps | 98.9% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 15,200 psi | 45% | 879 fps | 95.7% |
| SNPE Vectan BA10² | <<locked>> | 60% | 21,074 psi | 62% | 896 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 17,970 psi | 53% | 968 fps | 85.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 14,924 psi | 44% | 886 fps | 97% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 24,976 psi | 73% | 1184 fps | 86.6% |
| Somchem MP200*² | <<locked>> | 60% | 15,142 psi | 44% | 909 fps | 90.1% |
| Somchem MS200*² | 3.6 gr | 60% | 13,866 psi | 41% | 863 fps | 91.4% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 18,202 psi | 53% | 1001 fps | 87.1% |
| Vihtavuori N310² | <<locked>> | 60% | 26,237 psi | 77% | 981 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 15,679 psi | 46% | 899 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 7,353 psi | 22% | 659 fps | 99.9% |
| Vihtavuori N330² | <<locked>> | 60% | 13,793 psi | 40% | 892 fps | 97.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 12,676 psi | 37% | 843 fps | 89.1% |
| Vihtavuori N350* | <<locked>> | 80% | 17,506 psi | 51% | 984 fps | 86.7% |
| Winchester 231² | <<locked>> | 60% | 21,321 psi | 63% | 1004 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 25,512 psi | 75% | 1129 fps | 91.4% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,488 psi | 37% | 837 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 62 powders for 9 x 21 loaded with the .358 | 125gr | Rim Rock TC Top Shelf. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,234 fps; across all powders the maximum-charge window runs from 732 fps to 1,234 fps. Alliant Herco gives the best case fill at 100 %, and 42 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 27–90 %, 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, Alliant UNIQUE, Somchem MS200 rank at the top here: for 9 x 21 with the .358 | 125gr | Rim Rock TC Top Shelf they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, Hodgdon HS-6, Hodgdon Longshot burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate No. 5, Accurate Solo 1000 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.