Load Specifications
Load data in caliber .45 Win. Mag. with .451 | 260gr | MAGTECH FMJ Flat bullet and 61 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N105, ADI AP 100 and Alliant Herco.
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"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 72% | 35,288 psi | 88% | 1191 fps | 100% |
| Accurate No. 7*² | <<locked>> | 72% | 33,011 psi | 83% | 1306 fps | 92% |
| Accurate Solo 1000² | <<locked>> | 72% | 34,330 psi | 86% | 1089 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 76% | 33,837 psi | 85% | 1138 fps | 100% |
| ADI AP 100 | <<locked>> | 92% | 33,953 psi | 85% | 1263 fps | 98.9% |
| ADI AP 70N² | <<locked>> | 64% | 35,259 psi | 88% | 1161 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 35,766 psi | 90% | 1007 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 34,592 psi | 87% | 1030 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 34,084 psi | 85% | 1056 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 33,489 psi | 84% | 1093 fps | 100% |
| Alliant BE-86² | <<locked>> | 76% | 35,694 psi | 89% | 1148 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 35,679 psi | 89% | 1332 fps | 92% |
| Alliant BULLSEYE² | <<locked>> | 68% | 34,693 psi | 87% | 1214 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 34,330 psi | 86% | 1102 fps | 100% |
| Alliant Herco | <<locked>> | 92% | 35,694 psi | 89% | 1227 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 76% | 34,200 psi | 86% | 1309 fps | 98.7% |
| Alliant RED DOT² | <<locked>> | 72% | 32,851 psi | 82% | 1060 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 35,375 psi | 89% | 1224 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 76% | 34,403 psi | 86% | 1214 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 33,953 psi | 85% | 1089 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 92% | 35,389 psi | 89% | 1119 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 33,808 psi | 85% | 1112 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 72% | 34,229 psi | 86% | 1152 fps | 100% |
| Hodgdon Clays² | <<locked>> | 68% | 33,576 psi | 84% | 997 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 35,447 psi | 89% | 1263 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 18,797 psi | 47% | 860 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 32,837 psi | 82% | 1135 fps | 100% |
| Lovex D037.1*² | <<locked>> | 72% | 33,011 psi | 83% | 1306 fps | 92% |
| Lovex S011² | <<locked>> | 64% | 35,882 psi | 90% | 1135 fps | 100% |
| Lovex S020² | <<locked>> | 68% | 33,112 psi | 83% | 1158 fps | 100% |
| Maxam CSB 1 | <<locked>> | 80% | 34,476 psi | 86% | 1138 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 35,259 psi | 88% | 1145 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 35,766 psi | 90% | 1132 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 34,548 psi | 87% | 1099 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 34,751 psi | 87% | 1056 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 64% | 34,809 psi | 87% | 1220 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 33,446 psi | 84% | 1109 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 17,506 psi | 44% | 866 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 76% | 32,576 psi | 82% | 1188 fps | 100% |
| ReloadSwiss RS 24 | <<locked>> | 80% | 34,983 psi | 88% | 1319 fps | 95% |
| Rottweil P 806 | <<locked>> | 84% | 35,230 psi | 88% | 1339 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 33,011 psi | 83% | 1306 fps | 92% |
| SNPE Vectan A0 | <<locked>> | 80% | 34,751 psi | 87% | 1178 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 35,215 psi | 88% | 1138 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 72% | 34,229 psi | 86% | 1145 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 35,230 psi | 88% | 1037 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 84% | 33,736 psi | 85% | 1224 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 34,098 psi | 85% | 1148 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 72% | 34,925 psi | 88% | 1322 fps | 99.6% |
| Somchem MP200² | <<locked>> | 72% | 36,085 psi | 90% | 1224 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 35,273 psi | 88% | 1194 fps | 100% |
| Somchem S221² | <<locked>> | 64% | 32,416 psi | 81% | 1257 fps | 96.5% |
| Vihtavuori 3N37² | <<locked>> | 76% | 33,199 psi | 83% | 1237 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 92% | 34,142 psi | 86% | 1296 fps | 95.4% |
| Vihtavuori N105 | <<locked>> | 96% | 32,822 psi | 82% | 1332 fps | 98.2% |
| Vihtavuori N320² | <<locked>> | 68% | 33,997 psi | 85% | 1096 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 33,112 psi | 83% | 1020 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 32,909 psi | 83% | 1138 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 35,708 psi | 90% | 1201 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 35,157 psi | 88% | 1253 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 76% | 33,591 psi | 84% | 1152 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% | 24,816 psi | 62% | 1060 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 25,411 psi | 64% | 1184 fps | 87.6% |
| Accurate Solo 1000² | <<locked>> | 60% | 25,846 psi | 65% | 988 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 22,234 psi | 56% | 988 fps | 100% |
| ADI AP 100*² | 9 gr | 60% | 15,069 psi | 38% | 915 fps | 88.1% |
| ADI AP 70N² | <<locked>> | 60% | 31,691 psi | 79% | 1122 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 27,673 psi | 69% | 919 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 26,049 psi | 65% | 928 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 26,078 psi | 65% | 961 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 27,485 psi | 69% | 1017 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 22,960 psi | 58% | 991 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 80% | 24,076 psi | 60% | 1145 fps | 85.3% |
| Alliant BULLSEYE² | <<locked>> | 60% | 28,195 psi | 71% | 1129 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 25,469 psi | 64% | 994 fps | 100% |
| Alliant Herco² | 8.2 gr | 60% | 17,056 psi | 43% | 938 fps | 99.9% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 21,640 psi | 54% | 1096 fps | 93.3% |
| Alliant RED DOT² | <<locked>> | 60% | 24,889 psi | 62% | 961 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 31,749 psi | 80% | 1181 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 22,640 psi | 57% | 1047 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 24,656 psi | 62% | 978 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 16,665 psi | 42% | 869 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 26,876 psi | 67% | 1033 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 25,005 psi | 63% | 1037 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 28,152 psi | 71% | 935 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 30,908 psi | 77% | 1204 fps | 99.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 9,398 psi | 24% | 650 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 26,731 psi | 67% | 1056 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 25,411 psi | 64% | 1184 fps | 87.6% |
| Lovex S011² | <<locked>> | 60% | 31,995 psi | 80% | 1093 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 26,237 psi | 66% | 1073 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 21,422 psi | 54% | 968 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 23,554 psi | 59% | 1004 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 23,699 psi | 59% | 984 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 25,585 psi | 64% | 991 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 28,282 psi | 71% | 984 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 31,024 psi | 78% | 1175 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 30,487 psi | 76% | 1076 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 9,065 psi | 23% | 656 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 21,060 psi | 53% | 1027 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 60% | 19,276 psi | 48% | 1043 fps | 85.2% |
| Rottweil P 806² | <<locked>> | 60% | 16,766 psi | 42% | 1030 fps | 95.4% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 25,411 psi | 64% | 1184 fps | 87.6% |
| SNPE Vectan A0² | <<locked>> | 60% | 21,002 psi | 53% | 988 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 25,759 psi | 65% | 1027 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 24,947 psi | 63% | 1030 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,964 psi | 73% | 965 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 18,188 psi | 46% | 971 fps | 96.4% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 24,961 psi | 63% | 1030 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 24,033 psi | 60% | 1152 fps | 96.6% |
| Somchem MP200² | <<locked>> | 60% | 25,643 psi | 64% | 1089 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 23,670 psi | 59% | 1040 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 28,529 psi | 72% | 1198 fps | 94.9% |
| Vihtavuori 3N37² | <<locked>> | 60% | 20,682 psi | 52% | 1043 fps | 98.5% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 20,204 psi | 51% | 1063 fps | 87.2% |
| Vihtavuori N105*² | 11.6 gr | 68% | 14,939 psi | 37% | 981 fps | 85.5% |
| Vihtavuori N320² | <<locked>> | 60% | 27,093 psi | 68% | 1017 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 14,968 psi | 38% | 771 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 26,005 psi | 65% | 1056 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 22,771 psi | 57% | 1030 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 18,246 psi | 46% | 991 fps | 97.7% |
| Winchester AutoComp ² | <<locked>> | 60% | 22,104 psi | 55% | 997 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 12 powders for .45 Win. Mag. loaded with the .451 | 260gr | MAGTECH FMJ Flat. Rottweil P 806 delivers the highest muzzle velocity at 1,339 fps; across all powders the maximum-charge window runs from 860 fps to 1,339 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 12 of the 12 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (275 MPa), the top charges use 44–89 %, leaving at least 11 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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, ADI AP 100, Alliant Herco rank at the top here: for .45 Win. Mag. with the .451 | 260gr | MAGTECH FMJ Flat 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. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon TrailBoss 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.