Load Specifications
Load data in caliber 9 x 21 with .355 | 116gr | Norma SPFN bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, Somchem MP200 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% | 30,139 psi | 88% | 1168 fps | 96.5% |
| Accurate No. 5*² | <<locked>> | 72% | 30,792 psi | 90% | 1240 fps | 88.7% |
| Accurate Solo 1000 | <<locked>> | 84% | 28,950 psi | 85% | 1106 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 29,153 psi | 86% | 1165 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 28,036 psi | 82% | 1168 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 27,934 psi | 82% | 988 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 29,095 psi | 85% | 1037 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 30,690 psi | 90% | 1106 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 27,325 psi | 80% | 1106 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 30,777 psi | 90% | 1181 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 28,500 psi | 84% | 1198 fps | 98.8% |
| Alliant Green Dot | <<locked>> | 88% | 30,777 psi | 90% | 1152 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 23,598 psi | 69% | 1125 fps | 96.6% |
| Alliant RED DOT | <<locked>> | 88% | 29,385 psi | 86% | 1112 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 29,820 psi | 87% | 1217 fps | 98.7% |
| Alliant UNIQUE | <<locked>> | 96% | 30,560 psi | 90% | 1243 fps | 99% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 30,676 psi | 90% | 1135 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 23,264 psi | 68% | 1070 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 30,356 psi | 89% | 1161 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 30,037 psi | 88% | 1194 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 30,211 psi | 89% | 1050 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 29,457 psi | 86% | 1152 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 76% | 28,805 psi | 85% | 1204 fps | 90.1% |
| Hodgdon Longshot*² | <<locked>> | 72% | 27,528 psi | 81% | 1188 fps | 91.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 9,979 psi | 29% | 758 fps | 99.2% |
| Hodgdon Universal | <<locked>> | 88% | 30,530 psi | 90% | 1201 fps | 100% |
| Lovex S011² | <<locked>> | 72% | 27,557 psi | 81% | 1109 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 28,529 psi | 84% | 1181 fps | 99.5% |
| Maxam CSB 1 | <<locked>> | 96% | 29,660 psi | 87% | 1168 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 29,747 psi | 87% | 1201 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 28,253 psi | 83% | 1132 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 30,603 psi | 90% | 1142 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 29,907 psi | 88% | 1089 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 28,674 psi | 84% | 1198 fps | 96.8% |
| Ramshot True Blue*² | <<locked>> | 72% | 29,312 psi | 86% | 1207 fps | 92.5% |
| Ramshot Zip² | <<locked>> | 64% | 28,282 psi | 83% | 1142 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 84% | 30,530 psi | 90% | 1194 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,108 psi | 27% | 745 fps | 95.3% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 28,007 psi | 82% | 1217 fps | 99.6% |
| Rottweil P 801² | <<locked>> | 76% | 29,211 psi | 86% | 1142 fps | 100% |
| SNPE Vectan A0 | <<locked>> | 96% | 30,110 psi | 88% | 1181 fps | 98.6% |
| SNPE Vectan A1 | <<locked>> | 84% | 29,689 psi | 87% | 1152 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 28,543 psi | 84% | 1145 fps | 99.9% |
| SNPE Vectan BA10² | <<locked>> | 76% | 30,501 psi | 89% | 1053 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 27,673 psi | 81% | 1171 fps | 90.8% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 29,965 psi | 88% | 1181 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 29,356 psi | 86% | 1289 fps | 87.4% |
| Somchem MP200 | <<locked>> | 84% | 28,007 psi | 82% | 1184 fps | 97.3% |
| Somchem MS200 | <<locked>> | 92% | 30,023 psi | 88% | 1198 fps | 99.2% |
| Vihtavuori 3N37* | <<locked>> | 96% | 29,820 psi | 87% | 1237 fps | 93.3% |
| Vihtavuori N310² | <<locked>> | 64% | 28,094 psi | 82% | 1040 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 29,950 psi | 88% | 1148 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 18,768 psi | 55% | 942 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 26,890 psi | 79% | 1165 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 29,892 psi | 88% | 1198 fps | 98.8% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 28,050 psi | 82% | 1204 fps | 92.7% |
| Winchester 231² | <<locked>> | 72% | 28,282 psi | 83% | 1142 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 27,949 psi | 82% | 1201 fps | 91% |
| Winchester AutoComp | <<locked>> | 96% | 30,618 psi | 90% | 1198 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>> | 64% | 16,404 psi | 48% | 932 fps | 87.8% |
| Accurate No. 5*² | <<locked>> | 68% | 26,643 psi | 78% | 1175 fps | 86.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 16,621 psi | 49% | 909 fps | 100% |
| Accurate Solo 1250*² | <<locked>> | 60% | 12,488 psi | 37% | 850 fps | 93.6% |
| ADI AP 70N² | <<locked>> | 60% | 17,898 psi | 53% | 991 fps | 98.6% |
| ADI APS 350² | <<locked>> | 60% | 19,943 psi | 59% | 879 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 18,173 psi | 53% | 883 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 16,505 psi | 48% | 892 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 16,636 psi | 49% | 925 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 12,618 psi | 37% | 863 fps | 96.4% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 16,259 psi | 48% | 958 fps | 92% |
| Alliant Green Dot² | <<locked>> | 60% | 15,577 psi | 46% | 902 fps | 99.8% |
| Alliant Herco*² | <<locked>> | 72% | 12,256 psi | 36% | 863 fps | 86.2% |
| Alliant RED DOT² | <<locked>> | 60% | 15,563 psi | 46% | 889 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 18,333 psi | 54% | 1007 fps | 93% |
| Alliant UNIQUE*² | 3.4 gr | 60% | 12,009 psi | 35% | 856 fps | 85.6% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 14,489 psi | 43% | 876 fps | 98.8% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 8,325 psi | 24% | 732 fps | 94.7% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 14,373 psi | 42% | 906 fps | 99.4% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 22,597 psi | 66% | 1083 fps | 99.1% |
| Hodgdon Clays² | <<locked>> | 60% | 15,287 psi | 45% | 830 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 25,860 psi | 76% | 1102 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 68% | 22,234 psi | 65% | 1093 fps | 85.6% |
| Hodgdon Longshot*² | <<locked>> | 64% | 21,118 psi | 62% | 1076 fps | 87.2% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 4,873 psi | 14% | 541 fps | 89.6% |
| Hodgdon Universal² | <<locked>> | 60% | 14,649 psi | 43% | 915 fps | 96.5% |
| Lovex S011² | <<locked>> | 60% | 19,537 psi | 57% | 981 fps | 99.5% |
| Lovex S020*² | <<locked>> | 60% | 13,721 psi | 40% | 899 fps | 91.1% |
| Maxam CSB 1*² | <<locked>> | 60% | 12,067 psi | 35% | 833 fps | 93.1% |
| Maxam CSB 2² | <<locked>> | 60% | 10,892 psi | 32% | 846 fps | 97.1% |
| Maxam CSB 3² | <<locked>> | 60% | 14,054 psi | 41% | 883 fps | 98.6% |
| Maxam CSB 4² | <<locked>> | 60% | 15,069 psi | 44% | 896 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 17,448 psi | 51% | 912 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 16,926 psi | 50% | 981 fps | 89% |
| Ramshot True Blue*² | <<locked>> | 60% | 19,290 psi | 57% | 1030 fps | 85.5% |
| Ramshot Zip² | <<locked>> | 60% | 24,816 psi | 73% | 1093 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 15,476 psi | 45% | 958 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 68% | 5,323 psi | 16% | 577 fps | 85.8% |
| ReloadSwiss RS 20*² | 3.6 gr | 60% | 10,863 psi | 32% | 833 fps | 85.6% |
| Rottweil P 801² | <<locked>> | 60% | 18,231 psi | 53% | 981 fps | 100% |
| SNPE Vectan A0*² | <<locked>> | 60% | 12,009 psi | 35% | 820 fps | 85.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 15,476 psi | 45% | 909 fps | 97.8% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 14,823 psi | 43% | 892 fps | 93.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 20,378 psi | 60% | 919 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 88% | 20,552 psi | 60% | 1047 fps | 85.7% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 14,518 psi | 43% | 902 fps | 95.4% |
| SNPE Vectan SP 2* | <<locked>> | 88% | 26,194 psi | 77% | 1237 fps | 85.3% |
| Somchem MP200*² | 3.9 gr | 60% | 14,156 psi | 42% | 906 fps | 86.9% |
| Somchem MS200*² | <<locked>> | 60% | 13,576 psi | 40% | 876 fps | 89.2% |
| Vihtavuori 3N37* | <<locked>> | 80% | 19,261 psi | 57% | 1053 fps | 86.1% |
| Vihtavuori N310² | <<locked>> | 60% | 23,757 psi | 70% | 988 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 15,026 psi | 44% | 915 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 7,237 psi | 21% | 669 fps | 99.4% |
| Vihtavuori N330² | <<locked>> | 60% | 13,271 psi | 39% | 909 fps | 96.3% |
| Vihtavuori N340*² | <<locked>> | 60% | 12,343 psi | 36% | 853 fps | 86.6% |
| Vihtavuori N350* | <<locked>> | 84% | 18,608 psi | 55% | 1033 fps | 85.7% |
| Winchester 231² | <<locked>> | 60% | 19,740 psi | 58% | 1007 fps | 99.5% |
| Winchester 572*² | <<locked>> | 60% | 23,844 psi | 70% | 1129 fps | 88.3% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,285 psi | 36% | 853 fps | 92% |
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 59 powders for 9 x 21 loaded with the .355 | 116gr | Norma SPFN. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,289 fps; across all powders the maximum-charge window runs from 745 fps to 1,289 fps. Alliant Herco gives the best case fill at 100 %, and 42 of the 59 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. Alliant UNIQUE, Somchem MP200, ReloadSwiss RS 20 rank at the top here: for 9 x 21 with the .355 | 116gr | Norma SPFN 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 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.