Load Specifications
Load data in caliber 9 x 21 with .355 | 123gr | Geco SOFTPOINT bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N340, Somchem MS200 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.
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: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 88% | 30,661 psi | 90% | 1093 fps | 96.1% |
| Accurate Solo 1000 | <<locked>> | 88% | 30,647 psi | 90% | 1050 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 29,051 psi | 85% | 1086 fps | 100% |
| ADI AP 70N | <<locked>> | 80% | 28,921 psi | 85% | 1106 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 29,776 psi | 87% | 938 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 30,255 psi | 89% | 978 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 28,921 psi | 85% | 1014 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 28,674 psi | 84% | 1050 fps | 100% |
| Alliant BE-86 | <<locked>> | 96% | 30,676 psi | 90% | 1106 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 84% | 29,530 psi | 87% | 1132 fps | 98.8% |
| Alliant Green Dot | <<locked>> | 88% | 28,210 psi | 83% | 1047 fps | 100% |
| Alliant Herco*ᴾ | <<locked>> | 100% | 21,147 psi | 62% | 1014 fps | 94.8% |
| Alliant RED DOT | <<locked>> | 92% | 28,964 psi | 85% | 1033 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 29,979 psi | 88% | 1138 fps | 98.4% |
| Alliant UNIQUEᴾ | <<locked>> | 100% | 29,878 psi | 88% | 1152 fps | 98.5% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 30,240 psi | 89% | 1053 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 21,103 psi | 62% | 971 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 88% | 30,197 psi | 89% | 1086 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 26,992 psi | 79% | 1076 fps | 99.8% |
| Hodgdon Clays | <<locked>> | 96% | 30,182 psi | 89% | 978 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 30,705 psi | 90% | 1089 fps | 100% |
| Hodgdon HS-6* | <<locked>> | 80% | 28,950 psi | 85% | 1122 fps | 89.3% |
| Hodgdon Longshot*² | <<locked>> | 76% | 28,413 psi | 83% | 1119 fps | 91.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 8,920 psi | 26% | 679 fps | 98.2% |
| Hodgdon Universal | <<locked>> | 92% | 30,385 psi | 89% | 1122 fps | 100% |
| Lovex S011² | <<locked>> | 76% | 29,573 psi | 87% | 1060 fps | 100% |
| Lovex S020 | <<locked>> | 88% | 28,906 psi | 85% | 1106 fps | 99.3% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 28,485 psi | 84% | 1076 fps | 100% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 29,733 psi | 87% | 1125 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 28,790 psi | 84% | 1066 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 28,123 psi | 83% | 1040 fps | 100% |
| Maxam CSB 5 | <<locked>> | 84% | 29,428 psi | 86% | 1014 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 28,790 psi | 84% | 1122 fps | 96.3% |
| Ramshot True Blue*² | <<locked>> | 76% | 30,530 psi | 90% | 1142 fps | 92.3% |
| Ramshot Zip² | <<locked>> | 68% | 29,486 psi | 87% | 1083 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 88% | 30,037 psi | 88% | 1115 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 8,166 psi | 24% | 669 fps | 93.4% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 27,644 psi | 81% | 1135 fps | 99.3% |
| Rottweil P 801 | <<locked>> | 80% | 29,892 psi | 88% | 1079 fps | 100% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 29,834 psi | 88% | 1096 fps | 98.1% |
| SNPE Vectan A1 | <<locked>> | 88% | 30,284 psi | 89% | 1083 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 29,109 psi | 85% | 1073 fps | 99.8% |
| SNPE Vectan BA10² | <<locked>> | 76% | 28,601 psi | 84% | 961 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 25,425 psi | 75% | 1056 fps | 88.5% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 30,269 psi | 89% | 1106 fps | 100% |
| Somchem MP200 | <<locked>> | 88% | 28,805 psi | 85% | 1115 fps | 97.1% |
| Somchem MS200 | <<locked>> | 96% | 30,632 psi | 90% | 1125 fps | 99.1% |
| Vihtavuori 3N37*ᴾ | <<locked>> | 100% | 29,907 psi | 88% | 1155 fps | 92.6% |
| Vihtavuori N310² | <<locked>> | 68% | 28,456 psi | 83% | 974 fps | 100% |
| Vihtavuori N320 | <<locked>> | 88% | 30,516 psi | 90% | 1083 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 16,360 psi | 48% | 850 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 28,123 psi | 83% | 1106 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 27,963 psi | 82% | 1093 fps | 97.9% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 25,280 psi | 74% | 1083 fps | 90.3% |
| Winchester 231² | <<locked>> | 76% | 29,486 psi | 87% | 1083 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 29,588 psi | 87% | 1076 fps | 100% |
| Winchester 572*² | <<locked>> | 68% | 29,283 psi | 86% | 1138 fps | 91% |
| Winchester AutoComp | <<locked>> | 96% | 28,340 psi | 83% | 1093 fps | 99.9% |
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>> | 64% | 15,040 psi | 44% | 840 fps | 85.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 15,127 psi | 44% | 820 fps | 99.8% |
| Accurate Solo 1250*² | <<locked>> | 60% | 11,429 psi | 34% | 768 fps | 91.6% |
| ADI AP 70N² | <<locked>> | 60% | 16,244 psi | 48% | 896 fps | 97.4% |
| ADI APS 350² | <<locked>> | 60% | 18,840 psi | 55% | 804 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 17,535 psi | 51% | 814 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 14,692 psi | 43% | 801 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 15,229 psi | 45% | 837 fps | 99.6% |
| Alliant BE-86*² | <<locked>> | 60% | 11,327 psi | 33% | 774 fps | 94.7% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 15,461 psi | 45% | 879 fps | 90.6% |
| Alliant Green Dot² | <<locked>> | 60% | 14,141 psi | 41% | 814 fps | 99.2% |
| Alliant Herco*² | <<locked>> | 76% | 12,546 psi | 37% | 820 fps | 86% |
| Alliant RED DOT² | <<locked>> | 60% | 13,605 psi | 40% | 794 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 16,998 psi | 50% | 915 fps | 91.2% |
| Alliant UNIQUE*² | <<locked>> | 64% | 12,560 psi | 37% | 820 fps | 85.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 13,358 psi | 39% | 791 fps | 97.8% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 7,556 psi | 22% | 659 fps | 92.7% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 13,140 psi | 39% | 823 fps | 98.6% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 21,234 psi | 62% | 991 fps | 98.4% |
| Hodgdon Clays² | <<locked>> | 60% | 14,431 psi | 42% | 758 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 23,844 psi | 70% | 1004 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 76% | 25,469 psi | 75% | 1073 fps | 87.2% |
| Hodgdon Longshot*² | <<locked>> | 68% | 21,857 psi | 64% | 1017 fps | 87% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,482 psi | 13% | 486 fps | 87.4% |
| Hodgdon Universal² | 2.9 gr | 60% | 13,663 psi | 40% | 833 fps | 95.3% |
| Lovex S011² | <<locked>> | 60% | 18,811 psi | 55% | 902 fps | 99% |
| Lovex S020*² | <<locked>> | 60% | 12,270 psi | 36% | 807 fps | 88.6% |
| Maxam CSB 1*² | <<locked>> | 60% | 11,081 psi | 33% | 751 fps | 91.2% |
| Maxam CSB 2² | <<locked>> | 60% | 9,674 psi | 28% | 764 fps | 95.4% |
| Maxam CSB 3² | <<locked>> | 60% | 12,807 psi | 38% | 794 fps | 97.4% |
| Maxam CSB 4² | <<locked>> | 60% | 13,619 psi | 40% | 807 fps | 99.5% |
| Maxam CSB 5² | <<locked>> | 60% | 15,577 psi | 46% | 823 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 15,577 psi | 46% | 886 fps | 86.8% |
| Ramshot True Blue*² | <<locked>> | 64% | 20,581 psi | 60% | 988 fps | 85.9% |
| Ramshot Zip² | <<locked>> | 60% | 22,858 psi | 67% | 994 fps | 99.9% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 13,460 psi | 39% | 860 fps | 99.9% |
| ReloadSwiss RS 14*² | <<locked>> | 72% | 5,337 psi | 16% | 545 fps | 85.3% |
| ReloadSwiss RS 20*² | <<locked>> | 64% | 10,936 psi | 32% | 784 fps | 85.1% |
| Rottweil P 801² | <<locked>> | 60% | 17,274 psi | 51% | 906 fps | 100% |
| SNPE Vectan A0*² | <<locked>> | 64% | 12,691 psi | 37% | 784 fps | 85.5% |
| SNPE Vectan A1² | <<locked>> | 60% | 14,156 psi | 42% | 820 fps | 96.4% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 13,532 psi | 40% | 804 fps | 91.8% |
| SNPE Vectan BA10² | <<locked>> | 60% | 18,753 psi | 55% | 833 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 92% | 21,364 psi | 63% | 991 fps | 85.5% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 12,894 psi | 38% | 804 fps | 93.2% |
| Somchem MP200*² | <<locked>> | 64% | 14,562 psi | 43% | 856 fps | 86.8% |
| Somchem MS200*² | 2.9 gr | 60% | 12,140 psi | 36% | 781 fps | 86.5% |
| Vihtavuori 3N37* | <<locked>> | 88% | 21,727 psi | 64% | 1030 fps | 87.5% |
| Vihtavuori N310² | <<locked>> | 60% | 21,857 psi | 64% | 899 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 13,605 psi | 40% | 830 fps | 99.7% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 6,918 psi | 20% | 620 fps | 99% |
| Vihtavuori N330*² | <<locked>> | 60% | 11,734 psi | 34% | 810 fps | 94.1% |
| Vihtavuori N340*² | 3.2 gr | 64% | 12,430 psi | 36% | 804 fps | 86.1% |
| Vihtavuori N350* | <<locked>> | 92% | 20,900 psi | 61% | 1007 fps | 87% |
| Winchester 231² | <<locked>> | 60% | 18,434 psi | 54% | 919 fps | 98.8% |
| Winchester 244² | <<locked>> | 60% | 25,338 psi | 74% | 1024 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 21,234 psi | 62% | 1007 fps | 85.5% |
| Winchester AutoComp *² | <<locked>> | 60% | 11,211 psi | 33% | 768 fps | 89.9% |
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 58 powders for 9 x 21 loaded with the .355 | 123gr | Geco SOFTPOINT. Vihtavuori 3N37 delivers the highest muzzle velocity at 1,155 fps; across all powders the maximum-charge window runs from 669 fps to 1,155 fps. Alliant Herco gives the best case fill at 100 %, and 47 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 24–90 %, leaving at least 10 % headroom. Alliant Herco, Alliant UNIQUE, 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 N340, Somchem MS200, Hodgdon Universal rank at the top here: for 9 x 21 with the .355 | 123gr | Geco SOFTPOINT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Herco, Hodgdon HS-6, Hodgdon Longshot 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.