Load Specifications
Load data in caliber 9 x 21 with .355 | 115gr | Norma HP bullet and 61 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.
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>> | 80% | 28,152 psi | 83% | 1181 fps | 96.7% |
| Accurate No. 5*² | <<locked>> | 68% | 30,052 psi | 88% | 1273 fps | 89.6% |
| Accurate Solo 1000 | <<locked>> | 80% | 29,414 psi | 86% | 1142 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 88% | 28,906 psi | 85% | 1194 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 30,371 psi | 89% | 1230 fps | 100% |
| ADI APS 350² | <<locked>> | 76% | 30,632 psi | 90% | 1050 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 28,543 psi | 84% | 1060 fps | 100% |
| ADI AS 30 | <<locked>> | 80% | 27,630 psi | 81% | 1096 fps | 100% |
| ADI AS 50N | <<locked>> | 80% | 30,298 psi | 89% | 1175 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 29,834 psi | 88% | 1201 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 30,748 psi | 90% | 1266 fps | 99.6% |
| Alliant Green Dot | <<locked>> | 84% | 29,834 psi | 88% | 1171 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 25,570 psi | 75% | 1194 fps | 98.1% |
| Alliant RED DOT | <<locked>> | 84% | 28,979 psi | 85% | 1135 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 72% | 28,355 psi | 83% | 1230 fps | 98.8% |
| Alliant UNIQUE | <<locked>> | 88% | 27,876 psi | 82% | 1234 fps | 98.8% |
| Baschieri & Pellagri 100 | <<locked>> | 84% | 29,283 psi | 86% | 1152 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 25,846 psi | 76% | 1132 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 29,747 psi | 87% | 1184 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 28,297 psi | 83% | 1201 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 29,457 psi | 86% | 1070 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 72% | 28,036 psi | 82% | 1230 fps | 90.9% |
| Hodgdon Longshot*² | <<locked>> | 68% | 27,151 psi | 80% | 1217 fps | 92.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 10,979 psi | 32% | 804 fps | 99.9% |
| Hodgdon Universal | <<locked>> | 84% | 30,371 psi | 89% | 1230 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 30,008 psi | 88% | 1270 fps | 89.5% |
| Lovex S011² | <<locked>> | 72% | 30,197 psi | 89% | 1178 fps | 100% |
| Lovex S020 | <<locked>> | 80% | 28,108 psi | 82% | 1207 fps | 99.7% |
| Maxam CSB 1 | <<locked>> | 92% | 29,298 psi | 86% | 1194 fps | 100% |
| Maxam CSB 2 | <<locked>> | 92% | 29,762 psi | 87% | 1227 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 30,777 psi | 90% | 1194 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 27,296 psi | 80% | 1132 fps | 100% |
| Maxam CSB 5² | <<locked>> | 76% | 28,152 psi | 83% | 1099 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 30,661 psi | 90% | 1266 fps | 98.1% |
| Ramshot True Blue*² | <<locked>> | 68% | 27,775 psi | 81% | 1220 fps | 92.9% |
| Ramshot Zip² | <<locked>> | 64% | 30,400 psi | 89% | 1204 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 30,705 psi | 90% | 1224 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 9,514 psi | 28% | 778 fps | 96.5% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 28,384 psi | 83% | 1257 fps | 99.8% |
| Rottweil P 801² | <<locked>> | 72% | 29,472 psi | 86% | 1171 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 24,947 psi | 73% | 1289 fps | 89.9% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 30,008 psi | 88% | 1270 fps | 89.5% |
| SNPE Vectan A0 | <<locked>> | 92% | 29,312 psi | 86% | 1207 fps | 98.9% |
| SNPE Vectan A1 | <<locked>> | 80% | 29,080 psi | 85% | 1175 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 27,963 psi | 82% | 1171 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 28,529 psi | 84% | 1060 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 96% | 28,007 psi | 82% | 1214 fps | 92.1% |
| SNPE Vectan BA9 1/2 | <<locked>> | 84% | 29,631 psi | 87% | 1207 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 88% | 28,703 psi | 84% | 1316 fps | 88.2% |
| Somchem MP200 | <<locked>> | 84% | 30,429 psi | 89% | 1257 fps | 98.6% |
| Somchem MS200 | <<locked>> | 88% | 30,516 psi | 90% | 1240 fps | 99.7% |
| Vihtavuori 3N37* | <<locked>> | 92% | 29,153 psi | 86% | 1263 fps | 94% |
| Vihtavuori N310² | <<locked>> | 64% | 29,501 psi | 87% | 1083 fps | 100% |
| Vihtavuori N320 | <<locked>> | 80% | 28,964 psi | 85% | 1168 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 20,392 psi | 60% | 991 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 30,458 psi | 89% | 1240 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 30,168 psi | 89% | 1240 fps | 99.3% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 30,792 psi | 90% | 1283 fps | 95% |
| Winchester 231² | <<locked>> | 68% | 28,195 psi | 83% | 1171 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 30,008 psi | 88% | 1273 fps | 93.2% |
| Winchester AutoComp | <<locked>> | 92% | 30,501 psi | 89% | 1230 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% | 15,447 psi | 45% | 938 fps | 87.9% |
| Accurate No. 5*² | <<locked>> | 64% | 25,469 psi | 75% | 1194 fps | 86.7% |
| Accurate Solo 1000² | <<locked>> | 60% | 16,998 psi | 50% | 942 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 13,489 psi | 40% | 902 fps | 95.5% |
| ADI AP 70N² | <<locked>> | 60% | 19,580 psi | 57% | 1053 fps | 99.5% |
| ADI APS 350² | <<locked>> | 60% | 20,624 psi | 61% | 915 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 18,666 psi | 55% | 915 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 17,172 psi | 50% | 928 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 17,912 psi | 53% | 978 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 13,953 psi | 41% | 919 fps | 98.1% |
| Alliant BULLSEYE*² | <<locked>> | 60% | 17,956 psi | 53% | 1030 fps | 94.4% |
| Alliant Green Dot² | <<locked>> | 60% | 16,868 psi | 49% | 955 fps | 100% |
| Alliant Herco*² | <<locked>> | 68% | 12,270 psi | 36% | 886 fps | 87.2% |
| Alliant RED DOT² | <<locked>> | 60% | 16,331 psi | 48% | 928 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 20,653 psi | 61% | 1089 fps | 95.5% |
| Alliant UNIQUE*² | 3.9 gr | 60% | 13,474 psi | 40% | 925 fps | 88.8% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 15,592 psi | 46% | 925 fps | 99.6% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,152 psi | 27% | 778 fps | 96.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 15,838 psi | 46% | 961 fps | 99.9% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 25,295 psi | 74% | 1158 fps | 99.9% |
| Hodgdon Clays² | <<locked>> | 60% | 15,925 psi | 47% | 866 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 21,437 psi | 63% | 1109 fps | 86.2% |
| Hodgdon Longshot*² | <<locked>> | 60% | 20,581 psi | 60% | 1096 fps | 87.9% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,149 psi | 15% | 571 fps | 91.6% |
| Hodgdon Universal² | <<locked>> | 60% | 16,447 psi | 48% | 984 fps | 98.3% |
| Lovex D036*² | <<locked>> | 64% | 25,425 psi | 75% | 1194 fps | 86.7% |
| Lovex S011² | <<locked>> | 60% | 21,350 psi | 63% | 1043 fps | 100% |
| Lovex S020*² | <<locked>> | 60% | 15,258 psi | 45% | 965 fps | 93.7% |
| Maxam CSB 1² | <<locked>> | 60% | 13,039 psi | 38% | 883 fps | 95.1% |
| Maxam CSB 2² | <<locked>> | 60% | 12,734 psi | 37% | 919 fps | 99% |
| Maxam CSB 3² | <<locked>> | 60% | 15,229 psi | 45% | 932 fps | 99.5% |
| Maxam CSB 4² | <<locked>> | 60% | 16,404 psi | 48% | 948 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 19,145 psi | 56% | 965 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 18,478 psi | 54% | 1047 fps | 91.6% |
| Ramshot True Blue*² | <<locked>> | 60% | 21,132 psi | 62% | 1102 fps | 88.4% |
| Ramshot Zip² | <<locked>> | 60% | 27,108 psi | 80% | 1158 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 16,752 psi | 49% | 1004 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,018 psi | 15% | 568 fps | 85.6% |
| ReloadSwiss RS 20*² | 4 gr | 60% | 11,502 psi | 34% | 879 fps | 88.1% |
| Rottweil P 801² | <<locked>> | 60% | 20,247 psi | 59% | 1037 fps | 100% |
| Rottweil P 806* | <<locked>> | 96% | 21,915 psi | 64% | 1234 fps | 87.6% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 25,425 psi | 75% | 1194 fps | 86.7% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,343 psi | 39% | 883 fps | 88.3% |
| SNPE Vectan A1² | <<locked>> | 60% | 16,824 psi | 49% | 965 fps | 99% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 16,128 psi | 47% | 951 fps | 95.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 21,712 psi | 64% | 965 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 18,724 psi | 55% | 1040 fps | 85.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 15,374 psi | 45% | 948 fps | 96.8% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 25,846 psi | 76% | 1266 fps | 86.3% |
| Somchem MP200*² | <<locked>> | 60% | 15,374 psi | 45% | 965 fps | 89.5% |
| Somchem MS200*² | 3.9 gr | 60% | 14,315 psi | 42% | 922 fps | 91.1% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 18,956 psi | 56% | 1076 fps | 86.9% |
| Vihtavuori N310² | <<locked>> | 60% | 26,745 psi | 78% | 1050 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 16,389 psi | 48% | 965 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,383 psi | 25% | 725 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 14,924 psi | 44% | 974 fps | 98.2% |
| Vihtavuori N340*² | <<locked>> | 60% | 13,706 psi | 40% | 919 fps | 89.6% |
| Vihtavuori N350* | <<locked>> | 80% | 18,318 psi | 54% | 1060 fps | 86.7% |
| Winchester 231² | <<locked>> | 60% | 22,133 psi | 65% | 1079 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 26,136 psi | 77% | 1207 fps | 91% |
| Winchester AutoComp *² | <<locked>> | 60% | 12,908 psi | 38% | 892 fps | 93.6% |
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 21 loaded with the .355 | 115gr | Norma HP. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,316 fps; across all powders the maximum-charge window runs from 778 fps to 1,316 fps. Alliant Herco gives the best case fill at 100 %, and 41 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (235 MPa), the top charges use 28–90 %, 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 .355 | 115gr | Norma HP 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.