Load Specifications
Load data in caliber .45 Win. Mag. with .451 | 200gr | Rim Rock SWC bullet and 62 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, SNPE Vectan BA7 1/2 and Vihtavuori N350.
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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 35,041 psi | 88% | 1421 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 76% | 34,171 psi | 86% | 1306 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 80% | 32,967 psi | 83% | 1355 fps | 100% |
| ADI AP 100ᴾ | <<locked>> | 100% | 35,273 psi | 88% | 1512 fps | 97.3% |
| ADI AP 70N² | <<locked>> | 68% | 34,316 psi | 86% | 1391 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 33,301 psi | 83% | 1181 fps | 100% |
| ADI APS 450² | <<locked>> | 76% | 35,012 psi | 88% | 1237 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 33,576 psi | 84% | 1270 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 32,721 psi | 82% | 1306 fps | 100% |
| Alliant BE-86 | <<locked>> | 80% | 34,243 psi | 86% | 1362 fps | 100% |
| Alliant BLUE DOT*ᴾ | <<locked>> | 100% | 33,736 psi | 85% | 1526 fps | 87.2% |
| Alliant BULLSEYE² | <<locked>> | 72% | 34,679 psi | 87% | 1450 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 32,808 psi | 82% | 1312 fps | 100% |
| Alliant Herco | <<locked>> | 96% | 33,533 psi | 84% | 1437 fps | 100% |
| Alliant POWER PISTOL | <<locked>> | 80% | 32,576 psi | 82% | 1519 fps | 95.9% |
| Alliant RED DOT | <<locked>> | 80% | 34,766 psi | 87% | 1306 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 35,418 psi | 89% | 1463 fps | 100% |
| Alliant UNIQUE | <<locked>> | 84% | 35,795 psi | 90% | 1476 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 76% | 33,112 psi | 83% | 1299 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 96% | 33,765 psi | 85% | 1325 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 72% | 33,243 psi | 83% | 1325 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 76% | 33,112 psi | 83% | 1368 fps | 100% |
| Hodgdon Clays² | <<locked>> | 72% | 33,837 psi | 85% | 1201 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 68% | 34,940 psi | 88% | 1490 fps | 99.4% |
| Hodgdon Longshot² | <<locked>> | 64% | 33,924 psi | 85% | 1470 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 15,273 psi | 38% | 978 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 34,853 psi | 87% | 1398 fps | 100% |
| Lovex S011² | <<locked>> | 64% | 31,995 psi | 80% | 1312 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 35,969 psi | 90% | 1427 fps | 100% |
| Maxam CSB 1 | <<locked>> | 84% | 33,170 psi | 83% | 1352 fps | 100% |
| Maxam CSB 2 | <<locked>> | 80% | 33,083 psi | 83% | 1358 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 34,809 psi | 87% | 1348 fps | 100% |
| Maxam CSB 4² | <<locked>> | 76% | 33,794 psi | 85% | 1316 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 34,461 psi | 86% | 1270 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 68% | 34,403 psi | 86% | 1453 fps | 100% |
| Ramshot True Blue² | <<locked>> | 64% | 35,346 psi | 89% | 1486 fps | 99.9% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 35,853 psi | 90% | 1375 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,040 psi | 35% | 981 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 84% | 34,751 psi | 87% | 1457 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 84% | 33,634 psi | 84% | 1526 fps | 91% |
| Rottweil P 801² | <<locked>> | 64% | 32,808 psi | 82% | 1302 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 31,763 psi | 80% | 1539 fps | 99.3% |
| SNPE Vectan A0 | <<locked>> | 84% | 34,011 psi | 85% | 1401 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 76% | 34,954 psi | 88% | 1362 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 76% | 33,953 psi | 85% | 1368 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 72% | 35,607 psi | 89% | 1247 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 92% | 36,056 psi | 90% | 1486 fps | 99.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 76% | 32,851 psi | 82% | 1362 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 32,634 psi | 82% | 1532 fps | 97.5% |
| Somchem MP200² | <<locked>> | 76% | 35,012 psi | 88% | 1453 fps | 100% |
| Somchem MS200 | <<locked>> | 80% | 34,519 psi | 87% | 1421 fps | 100% |
| Somchem S221*² | <<locked>> | 72% | 35,331 psi | 89% | 1529 fps | 94.7% |
| Vihtavuori 3N37 | <<locked>> | 84% | 35,563 psi | 89% | 1503 fps | 100% |
| Vihtavuori 3N38*ᴾ | <<locked>> | 100% | 35,737 psi | 90% | 1549 fps | 92.8% |
| Vihtavuori N105*ᴾ | <<locked>> | 100% | 29,718 psi | 75% | 1516 fps | 94.2% |
| Vihtavuori N320² | <<locked>> | 72% | 32,706 psi | 82% | 1309 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 28,297 psi | 71% | 1175 fps | 100% |
| Vihtavuori N330² | <<locked>> | 76% | 35,462 psi | 89% | 1404 fps | 100% |
| Vihtavuori N340 | <<locked>> | 80% | 34,490 psi | 86% | 1421 fps | 100% |
| Vihtavuori N350 | <<locked>> | 88% | 33,663 psi | 84% | 1470 fps | 99.9% |
| Winchester 231² | <<locked>> | 64% | 33,475 psi | 84% | 1352 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 35,244 psi | 88% | 1401 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 21,205 psi | 53% | 1194 fps | 98.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 22,669 psi | 57% | 1138 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 19,160 psi | 48% | 1132 fps | 100% |
| ADI AP 100*² | <<locked>> | 72% | 17,303 psi | 43% | 1152 fps | 86.5% |
| ADI AP 70N² | <<locked>> | 60% | 27,166 psi | 68% | 1286 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,150 psi | 63% | 1070 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 23,685 psi | 59% | 1083 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 22,858 psi | 57% | 1112 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 23,960 psi | 60% | 1178 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 19,435 psi | 49% | 1132 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 30,385 psi | 76% | 1470 fps | 85.3% |
| Alliant BULLSEYE² | <<locked>> | 60% | 24,468 psi | 61% | 1286 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 22,263 psi | 56% | 1152 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 13,938 psi | 35% | 1040 fps | 96.7% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 17,869 psi | 45% | 1198 fps | 85.9% |
| Alliant RED DOT² | <<locked>> | 60% | 21,727 psi | 54% | 1112 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 27,644 psi | 69% | 1345 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 18,840 psi | 47% | 1175 fps | 99.3% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 21,567 psi | 54% | 1132 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 13,489 psi | 34% | 984 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 22,814 psi | 57% | 1181 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 21,248 psi | 53% | 1184 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 25,498 psi | 64% | 1089 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 26,672 psi | 67% | 1355 fps | 97.2% |
| Hodgdon Longshot² | <<locked>> | 60% | 29,356 psi | 74% | 1398 fps | 99.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,034 psi | 18% | 722 fps | 99.9% |
| Hodgdon Universal² | <<locked>> | 60% | 22,655 psi | 57% | 1211 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 28,152 psi | 71% | 1260 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 22,104 psi | 55% | 1220 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 18,014 psi | 45% | 1102 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 19,000 psi | 48% | 1138 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 20,465 psi | 51% | 1132 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 22,423 psi | 56% | 1148 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 25,338 psi | 64% | 1145 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 26,600 psi | 67% | 1332 fps | 100% |
| Ramshot True Blue² | <<locked>> | 60% | 30,676 psi | 77% | 1414 fps | 99.4% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 25,295 psi | 63% | 1234 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,628 psi | 17% | 715 fps | 97.5% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 17,085 psi | 43% | 1148 fps | 99.8% |
| ReloadSwiss RS 24*² | <<locked>> | 76% | 26,266 psi | 66% | 1391 fps | 86.7% |
| Rottweil P 801² | <<locked>> | 60% | 29,124 psi | 73% | 1253 fps | 100% |
| Rottweil P 806*² | 15.6 gr | 64% | 13,822 psi | 35% | 1142 fps | 88.1% |
| SNPE Vectan A0² | <<locked>> | 60% | 17,956 psi | 45% | 1115 fps | 98.9% |
| SNPE Vectan A1² | <<locked>> | 60% | 22,669 psi | 57% | 1181 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 21,799 psi | 55% | 1181 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 26,672 psi | 67% | 1129 fps | 100% |
| SNPE Vectan BA7 1/2*² | 10.7 gr | 60% | 14,997 psi | 38% | 1066 fps | 90.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 21,350 psi | 54% | 1178 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 18,913 psi | 47% | 1250 fps | 89.5% |
| Somchem MP200² | <<locked>> | 60% | 21,988 psi | 55% | 1234 fps | 99.6% |
| Somchem MS200² | <<locked>> | 60% | 20,146 psi | 51% | 1178 fps | 99.9% |
| Somchem S221*² | <<locked>> | 60% | 23,641 psi | 59% | 1316 fps | 88.4% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 17,202 psi | 43% | 1155 fps | 93.7% |
| Vihtavuori 3N38* | <<locked>> | 84% | 22,931 psi | 57% | 1316 fps | 85.2% |
| Vihtavuori N105* | <<locked>> | 84% | 18,710 psi | 47% | 1273 fps | 85.3% |
| Vihtavuori N320² | <<locked>> | 60% | 23,496 psi | 59% | 1178 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,835 psi | 30% | 879 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 21,988 psi | 55% | 1211 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 19,348 psi | 49% | 1168 fps | 99.6% |
| Vihtavuori N350*² | 10.5 gr | 60% | 14,765 psi | 37% | 1086 fps | 91.6% |
| Winchester 231² | <<locked>> | 60% | 29,805 psi | 75% | 1302 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,492 psi | 46% | 1132 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 17 powders for .45 Win. Mag. loaded with the .451 | 200gr | Rim Rock SWC. Vihtavuori 3N38 delivers the highest muzzle velocity at 1,549 fps; across all powders the maximum-charge window runs from 978 fps to 1,549 fps. ADI AP 100 gives the best case fill at 100 %, and 17 of the 17 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (275 MPa), the top charges use 35–90 %, leaving at least 10 % headroom. ADI AP 100, 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. Rottweil P 806, SNPE Vectan BA7 1/2, Vihtavuori N350 rank at the top here: for .45 Win. Mag. with the .451 | 200gr | Rim Rock SWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Vihtavuori 3N38, Vihtavuori N105 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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.