Load Specifications
Load data in caliber .44 Auto Mag. with .43 | 240gr | Rim Rock SWC bullet and 56 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, Vihtavuori N32C Tin Star and ReloadSwiss RS 14.
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: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 64% | 30,487 psi | 82% | 1191 fps | 100% |
| Accurate No. 7² | <<locked>> | 68% | 33,170 psi | 90% | 1378 fps | 95.3% |
| Accurate No. 9*² | <<locked>> | 76% | 32,837 psi | 89% | 1371 fps | 90% |
| Accurate Solo 1000² | <<locked>> | 64% | 30,545 psi | 83% | 1096 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 30,110 psi | 81% | 1142 fps | 100% |
| Accurate TCM*² | <<locked>> | 76% | 33,054 psi | 89% | 1368 fps | 91.4% |
| ADI AP 100 | <<locked>> | 84% | 30,951 psi | 84% | 1286 fps | 99.6% |
| ADI APS 350² | <<locked>> | 64% | 31,517 psi | 85% | 1014 fps | 100% |
| ADI APS 450² | <<locked>> | 64% | 30,574 psi | 83% | 1033 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 33,098 psi | 89% | 1096 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 32,518 psi | 88% | 1132 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 31,067 psi | 84% | 1145 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 88% | 33,286 psi | 90% | 1371 fps | 94.4% |
| Alliant Green Dot² | <<locked>> | 68% | 32,721 psi | 88% | 1135 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 32,808 psi | 89% | 1247 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 68% | 30,400 psi | 82% | 1319 fps | 99.3% |
| Alliant RED DOT² | <<locked>> | 68% | 31,966 psi | 86% | 1099 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 30,182 psi | 82% | 1214 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 32,938 psi | 89% | 1125 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 32,227 psi | 87% | 1132 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 32,735 psi | 89% | 1148 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 68% | 33,127 psi | 90% | 1188 fps | 100% |
| Hodgdon Clays² | <<locked>> | 76% | 33,388 psi | 90% | 1063 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 19,102 psi | 52% | 909 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 31,763 psi | 86% | 1175 fps | 100% |
| Lovex D037.1² | <<locked>> | 68% | 33,170 psi | 90% | 1378 fps | 95.3% |
| Lovex D037.2*² | <<locked>> | 72% | 29,370 psi | 79% | 1316 fps | 88.1% |
| Lovex S020² | <<locked>> | 64% | 32,155 psi | 87% | 1198 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 31,299 psi | 85% | 1152 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 31,285 psi | 85% | 1152 fps | 100% |
| Maxam CSB 3² | <<locked>> | 68% | 31,299 psi | 85% | 1132 fps | 100% |
| Maxam CSB 4² | <<locked>> | 64% | 30,153 psi | 82% | 1096 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 33,301 psi | 90% | 1089 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 17,898 psi | 48% | 922 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 32,648 psi | 88% | 1237 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 72% | 31,430 psi | 85% | 1339 fps | 96.4% |
| Rottweil P 806² | <<locked>> | 76% | 31,560 psi | 85% | 1348 fps | 100% |
| Shooters World Heavy Pistol*² | <<locked>> | 72% | 29,370 psi | 79% | 1316 fps | 88.1% |
| Shooters World Major Pistol² | <<locked>> | 68% | 33,170 psi | 90% | 1378 fps | 95.3% |
| SNPE Vectan A0² | <<locked>> | 72% | 31,256 psi | 85% | 1188 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 64% | 30,966 psi | 84% | 1138 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 33,344 psi | 90% | 1184 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 30,647 psi | 83% | 1243 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 33,170 psi | 90% | 1188 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 64% | 30,472 psi | 82% | 1322 fps | 99.9% |
| Somchem MP200² | <<locked>> | 64% | 31,212 psi | 84% | 1220 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 31,517 psi | 85% | 1201 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 72% | 32,721 psi | 88% | 1286 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 84% | 31,473 psi | 85% | 1329 fps | 97.1% |
| Vihtavuori N105 | <<locked>> | 88% | 30,705 psi | 83% | 1365 fps | 99.4% |
| Vihtavuori N320² | <<locked>> | 64% | 32,518 psi | 88% | 1129 fps | 100% |
| Vihtavuori N32C Tin Star | <<locked>> | 96% | 32,198 psi | 87% | 1060 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 32,213 psi | 87% | 1178 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 31,154 psi | 84% | 1198 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 31,937 psi | 86% | 1270 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 32,851 psi | 89% | 1194 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 26,963 psi | 73% | 1142 fps | 100% |
| Accurate No. 7*² | <<locked>> | 60% | 24,410 psi | 66% | 1234 fps | 90.8% |
| Accurate No. 9*² | <<locked>> | 68% | 24,845 psi | 67% | 1237 fps | 85.1% |
| Accurate Solo 1000² | <<locked>> | 60% | 27,122 psi | 73% | 1050 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 24,236 psi | 66% | 1063 fps | 100% |
| Accurate TCM*² | <<locked>> | 68% | 24,976 psi | 68% | 1234 fps | 86.6% |
| ADI AP 100*² | <<locked>> | 60% | 16,114 psi | 44% | 1004 fps | 92.7% |
| ADI APS 350² | <<locked>> | 60% | 28,398 psi | 77% | 974 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 27,702 psi | 75% | 997 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 27,122 psi | 73% | 1024 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 29,037 psi | 79% | 1086 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 24,787 psi | 67% | 1066 fps | 100% |
| Alliant BLUE DOT*² | <<locked>> | 72% | 21,408 psi | 58% | 1158 fps | 87.1% |
| Alliant Green Dot² | <<locked>> | 60% | 27,021 psi | 73% | 1063 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 17,840 psi | 48% | 1007 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 23,772 psi | 64% | 1201 fps | 97.2% |
| Alliant RED DOT² | <<locked>> | 60% | 26,005 psi | 70% | 1024 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 24,236 psi | 66% | 1125 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 26,658 psi | 72% | 1050 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 17,289 psi | 47% | 925 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 28,660 psi | 77% | 1099 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 26,455 psi | 72% | 1106 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 22,916 psi | 62% | 928 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 8,818 psi | 24% | 682 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 28,456 psi | 77% | 1132 fps | 100% |
| Lovex D037.1*² | <<locked>> | 60% | 24,410 psi | 66% | 1234 fps | 90.8% |
| Lovex D037.2*² | <<locked>> | 68% | 25,541 psi | 69% | 1250 fps | 85.6% |
| Lovex S020² | <<locked>> | 60% | 28,689 psi | 78% | 1155 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 22,684 psi | 61% | 1037 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 24,860 psi | 67% | 1066 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 25,295 psi | 68% | 1053 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 27,325 psi | 74% | 1060 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 30,153 psi | 82% | 1053 fps | 100% |
| ReloadSwiss RS 14² | 4.9 gr | 60% | 8,340 psi | 23% | 689 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 22,974 psi | 62% | 1106 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 21,132 psi | 57% | 1148 fps | 90.6% |
| Rottweil P 806² | <<locked>> | 60% | 18,086 psi | 49% | 1115 fps | 98.4% |
| Shooters World Heavy Pistol*² | <<locked>> | 68% | 25,541 psi | 69% | 1250 fps | 85.6% |
| Shooters World Major Pistol*² | <<locked>> | 60% | 24,410 psi | 66% | 1234 fps | 90.8% |
| SNPE Vectan A0² | <<locked>> | 60% | 22,655 psi | 61% | 1066 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 27,485 psi | 74% | 1096 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 26,672 psi | 72% | 1102 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 19,435 psi | 53% | 1053 fps | 98.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 26,760 psi | 72% | 1106 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 26,281 psi | 71% | 1253 fps | 99.2% |
| Somchem MP200² | <<locked>> | 60% | 27,673 psi | 75% | 1171 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 24,918 psi | 67% | 1109 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 22,713 psi | 61% | 1135 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 15,287 psi | 41% | 1007 fps | 85.8% |
| Vihtavuori N105*² | 11.2 gr | 60% | 12,459 psi | 34% | 971 fps | 86% |
| Vihtavuori N320² | <<locked>> | 60% | 29,428 psi | 80% | 1093 fps | 100% |
| Vihtavuori N32C Tin Star² | 6.5 gr | 60% | 14,852 psi | 40% | 817 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 28,166 psi | 76% | 1129 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 24,482 psi | 66% | 1109 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 19,827 psi | 54% | 1079 fps | 99.7% |
| Winchester AutoComp ² | <<locked>> | 60% | 23,612 psi | 64% | 1070 fps | 100% |
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 9 powders for .44 Auto Mag. loaded with the .43 | 240gr | Rim Rock SWC. Alliant BLUE DOT delivers the highest muzzle velocity at 1,371 fps; across all powders the maximum-charge window runs from 909 fps to 1,371 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (255 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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 N105, Vihtavuori N32C Tin Star, ReloadSwiss RS 14 rank at the top here: for .44 Auto Mag. with the .43 | 240gr | Rim Rock SWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant BLUE DOT burn incompletely and react more sensitively to barrel length and temperature. Baschieri & Pellagri 102 Pistol, Hodgdon TrailBoss, ReloadSwiss RS 14 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.