Load Specifications
Load data in caliber 9 x 21 with .358 | 150gr | LEE Mold 358-150-SWC bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, Somchem MS200 and ReloadSwiss RS 20.
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>> | 84% | 28,747 psi | 84% | 951 fps | 97.5% |
| Accurate No. 5*² | <<locked>> | 72% | 29,950 psi | 88% | 1024 fps | 90.6% |
| Accurate Solo 1000 | <<locked>> | 84% | 27,717 psi | 81% | 896 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 96% | 30,647 psi | 90% | 974 fps | 100% |
| ADI AP 70N | <<locked>> | 80% | 29,892 psi | 88% | 988 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 30,835 psi | 90% | 833 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 30,139 psi | 88% | 856 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 30,385 psi | 89% | 906 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 28,732 psi | 84% | 925 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 28,253 psi | 83% | 951 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 27,688 psi | 81% | 981 fps | 99.5% |
| Alliant Green Dot | <<locked>> | 88% | 28,282 psi | 83% | 925 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 21,886 psi | 64% | 919 fps | 97.5% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 29,167 psi | 86% | 1050 fps | 87.3% |
| Alliant RED DOT | <<locked>> | 92% | 30,414 psi | 89% | 925 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 28,427 psi | 83% | 991 fps | 99.3% |
| Alliant UNIQUE | <<locked>> | 96% | 28,616 psi | 84% | 1010 fps | 99.5% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 29,646 psi | 87% | 922 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 22,060 psi | 65% | 869 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 28,877 psi | 85% | 945 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 92% | 29,863 psi | 88% | 981 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 30,139 psi | 88% | 856 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 27,224 psi | 80% | 925 fps | 100% |
| Hodgdon HS-6* | <<locked>> | 80% | 30,835 psi | 90% | 1027 fps | 93.3% |
| Hodgdon Longshot*² | <<locked>> | 76% | 29,979 psi | 88% | 1020 fps | 94.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 8,108 psi | 24% | 594 fps | 99% |
| Hodgdon Universal | <<locked>> | 88% | 28,268 psi | 83% | 971 fps | 100% |
| Lovex D036*² | <<locked>> | 72% | 29,907 psi | 88% | 1024 fps | 90.6% |
| Lovex S011² | <<locked>> | 76% | 30,516 psi | 90% | 942 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 27,398 psi | 80% | 965 fps | 99.9% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 30,008 psi | 88% | 965 fps | 100% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 29,994 psi | 88% | 994 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 29,863 psi | 88% | 948 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 30,356 psi | 89% | 935 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 27,717 psi | 81% | 873 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 29,907 psi | 88% | 1010 fps | 98.5% |
| Ramshot True Blue*² | <<locked>> | 72% | 28,021 psi | 82% | 991 fps | 94% |
| Ramshot Zip² | <<locked>> | 68% | 30,835 psi | 90% | 968 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 28,094 psi | 82% | 965 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 7,165 psi | 21% | 584 fps | 94.4% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 30,255 psi | 89% | 1033 fps | 100% |
| Rottweil P 801 | <<locked>> | 80% | 30,734 psi | 90% | 958 fps | 100% |
| Shooters World Auto Pistol*² | <<locked>> | 72% | 29,907 psi | 88% | 1024 fps | 90.6% |
| SNPE Vectan A0 | <<locked>> | 96% | 28,877 psi | 85% | 961 fps | 99.2% |
| SNPE Vectan A1 | <<locked>> | 88% | 30,487 psi | 89% | 955 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 29,327 psi | 86% | 955 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 30,124 psi | 88% | 856 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 26,411 psi | 77% | 958 fps | 92.3% |
| SNPE Vectan BA9 1/2 | <<locked>> | 92% | 30,269 psi | 89% | 978 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 96% | 29,733 psi | 87% | 1086 fps | 90.3% |
| Somchem MP200 | <<locked>> | 88% | 29,240 psi | 86% | 1001 fps | 98.9% |
| Somchem MS200 | <<locked>> | 92% | 29,312 psi | 86% | 984 fps | 99.8% |
| Vihtavuori 3N37ᴾ | <<locked>> | 100% | 30,545 psi | 90% | 1037 fps | 95.6% |
| Vihtavuori N310² | <<locked>> | 68% | 29,936 psi | 88% | 869 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 27,978 psi | 82% | 925 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 16,897 psi | 50% | 758 fps | 100% |
| Vihtavuori N330 | <<locked>> | 88% | 28,442 psi | 83% | 978 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 28,311 psi | 83% | 974 fps | 99.4% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 26,469 psi | 78% | 984 fps | 94.1% |
| Winchester 231² | <<locked>> | 76% | 30,835 psi | 90% | 968 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 30,777 psi | 90% | 961 fps | 100% |
| Winchester 572*² | <<locked>> | 68% | 30,560 psi | 90% | 1030 fps | 94.4% |
| Winchester AutoComp | <<locked>> | 96% | 29,008 psi | 85% | 974 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% | 13,445 psi | 39% | 722 fps | 86.9% |
| Accurate No. 5*² | <<locked>> | 64% | 22,292 psi | 65% | 919 fps | 85.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 14,968 psi | 44% | 725 fps | 100% |
| Accurate Solo 1250*² | <<locked>> | 60% | 11,226 psi | 33% | 686 fps | 94.3% |
| ADI AP 70N² | <<locked>> | 60% | 16,302 psi | 48% | 807 fps | 99.1% |
| ADI APS 350² | <<locked>> | 60% | 18,463 psi | 54% | 702 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 17,419 psi | 51% | 715 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 15,113 psi | 44% | 722 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 14,736 psi | 43% | 738 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 11,255 psi | 33% | 696 fps | 97% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 15,824 psi | 46% | 794 fps | 93.9% |
| Alliant Green Dot² | <<locked>> | 60% | 13,474 psi | 40% | 719 fps | 99.8% |
| Alliant Herco*² | <<locked>> | 72% | 10,443 psi | 31% | 689 fps | 86.2% |
| Alliant POWER PISTOL* | <<locked>> | 92% | 26,469 psi | 78% | 1014 fps | 85.6% |
| Alliant RED DOT² | <<locked>> | 60% | 13,808 psi | 41% | 712 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 17,753 psi | 52% | 833 fps | 94.7% |
| Alliant UNIQUE*² | 2.7 gr | 60% | 10,762 psi | 32% | 696 fps | 86.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 13,140 psi | 39% | 705 fps | 99.2% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 6,875 psi | 20% | 577 fps | 94.3% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 12,923 psi | 38% | 735 fps | 99.7% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 12,241 psi | 36% | 719 fps | 95.1% |
| Hodgdon Clays² | <<locked>> | 60% | 13,895 psi | 41% | 663 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 24,207 psi | 71% | 892 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 68% | 20,813 psi | 61% | 892 fps | 87.1% |
| Hodgdon Longshot*² | <<locked>> | 60% | 17,114 psi | 50% | 830 fps | 86.1% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 3,495 psi | 10% | 413 fps | 86.1% |
| Hodgdon Universal² | <<locked>> | 60% | 13,213 psi | 39% | 745 fps | 97.3% |
| Lovex D036*² | <<locked>> | 64% | 22,249 psi | 65% | 919 fps | 85.6% |
| Lovex S011² | <<locked>> | 60% | 18,246 psi | 54% | 794 fps | 99.8% |
| Lovex S020*² | <<locked>> | 60% | 12,299 psi | 36% | 728 fps | 92.1% |
| Maxam CSB 1*² | <<locked>> | 60% | 10,747 psi | 32% | 669 fps | 93.8% |
| Maxam CSB 2² | <<locked>> | 60% | 9,166 psi | 27% | 676 fps | 97.2% |
| Maxam CSB 3² | <<locked>> | 60% | 12,560 psi | 37% | 705 fps | 98.9% |
| Maxam CSB 4² | <<locked>> | 60% | 14,431 psi | 42% | 735 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 16,665 psi | 49% | 745 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 15,621 psi | 46% | 797 fps | 90.3% |
| Ramshot True Blue*² | <<locked>> | 60% | 17,709 psi | 52% | 837 fps | 86.7% |
| Ramshot Zip² | <<locked>> | 60% | 23,177 psi | 68% | 886 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 13,343 psi | 39% | 768 fps | 100% |
| ReloadSwiss RS 14* | <<locked>> | 80% | 4,728 psi | 14% | 489 fps | 86.9% |
| ReloadSwiss RS 20*² | 2.8 gr | 60% | 9,544 psi | 28% | 669 fps | 86.2% |
| Rottweil P 801² | <<locked>> | 60% | 16,273 psi | 48% | 791 fps | 100% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 22,249 psi | 65% | 919 fps | 85.6% |
| SNPE Vectan A0*² | <<locked>> | 60% | 11,211 psi | 33% | 669 fps | 86.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 14,388 psi | 42% | 738 fps | 98.4% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 13,750 psi | 40% | 725 fps | 94.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 18,797 psi | 55% | 735 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 84% | 17,695 psi | 52% | 827 fps | 85.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 12,778 psi | 37% | 722 fps | 95.7% |
| SNPE Vectan SP 2* | <<locked>> | 88% | 24,250 psi | 71% | 1010 fps | 86.9% |
| Somchem MP200*² | <<locked>> | 60% | 13,126 psi | 39% | 741 fps | 88.4% |
| Somchem MS200*² | 2.7 gr | 60% | 11,879 psi | 35% | 702 fps | 89.6% |
| Vihtavuori 3N37* | <<locked>> | 80% | 17,985 psi | 53% | 860 fps | 87.7% |
| Vihtavuori N310² | <<locked>> | 60% | 22,321 psi | 65% | 794 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 13,547 psi | 40% | 738 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 5,816 psi | 17% | 531 fps | 99.1% |
| Vihtavuori N330² | <<locked>> | 60% | 11,763 psi | 35% | 732 fps | 96.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 10,892 psi | 32% | 686 fps | 87.3% |
| Vihtavuori N350* | <<locked>> | 84% | 16,998 psi | 50% | 837 fps | 86.9% |
| Winchester 231² | <<locked>> | 60% | 19,276 psi | 57% | 830 fps | 99.9% |
| Winchester 244² | <<locked>> | 60% | 25,976 psi | 76% | 912 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 22,408 psi | 66% | 922 fps | 89.8% |
| Winchester AutoComp *² | <<locked>> | 60% | 10,269 psi | 30% | 673 fps | 91.7% |
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 40 powders for 9 x 21 loaded with the .358 | 150gr | LEE Mold 358-150-SWC. Vihtavuori 3N37 delivers the highest muzzle velocity at 1,037 fps; across all powders the maximum-charge window runs from 584 fps to 1,037 fps. Alliant Herco gives the best case fill at 100 %, and 40 of the 40 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 21–90 %, 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, Somchem MS200, ReloadSwiss RS 20 rank at the top here: for 9 x 21 with the .358 | 150gr | LEE Mold 358-150-SWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ReloadSwiss RS 14, SNPE Vectan BA7 1/2, 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.