Load Specifications
Load data in caliber .45 Win. Mag. with .451 | 250gr | Rim Rock RNFP Top Shelf 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% | 35,273 psi | 88% | 1247 fps | 100% |
| Accurate No. 7*² | <<locked>> | 72% | 32,474 psi | 81% | 1358 fps | 92% |
| Accurate Solo 1000² | <<locked>> | 72% | 33,939 psi | 85% | 1138 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 76% | 33,243 psi | 83% | 1188 fps | 100% |
| ADI AP 100 | <<locked>> | 92% | 33,069 psi | 83% | 1312 fps | 98.9% |
| ADI AP 70N² | <<locked>> | 64% | 34,737 psi | 87% | 1217 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 35,534 psi | 89% | 1056 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 33,982 psi | 85% | 1073 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 33,649 psi | 84% | 1106 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 32,735 psi | 82% | 1138 fps | 100% |
| Alliant BE-86² | <<locked>> | 76% | 34,635 psi | 87% | 1194 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 35,259 psi | 88% | 1388 fps | 92.1% |
| Alliant BULLSEYE² | <<locked>> | 68% | 34,330 psi | 86% | 1266 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 33,446 psi | 84% | 1152 fps | 100% |
| Alliant Herco | <<locked>> | 92% | 34,519 psi | 87% | 1273 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 76% | 33,605 psi | 84% | 1362 fps | 98.6% |
| Alliant RED DOT² | <<locked>> | 76% | 34,998 psi | 88% | 1142 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 35,331 psi | 89% | 1283 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 76% | 33,576 psi | 84% | 1263 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 33,489 psi | 84% | 1138 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 92% | 34,722 psi | 87% | 1168 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 33,141 psi | 83% | 1158 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 72% | 33,446 psi | 84% | 1201 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 33,707 psi | 85% | 1066 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 35,085 psi | 88% | 1319 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,216 psi | 43% | 886 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 35,273 psi | 88% | 1224 fps | 100% |
| Lovex D037.1*² | <<locked>> | 72% | 32,474 psi | 81% | 1358 fps | 92% |
| Lovex S011² | <<locked>> | 64% | 35,099 psi | 88% | 1181 fps | 100% |
| Lovex S020² | <<locked>> | 68% | 32,532 psi | 82% | 1211 fps | 100% |
| Maxam CSB 1 | <<locked>> | 80% | 34,156 psi | 86% | 1194 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 33,953 psi | 85% | 1191 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 34,693 psi | 87% | 1175 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 33,924 psi | 85% | 1148 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 33,910 psi | 85% | 1099 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 64% | 34,737 psi | 87% | 1280 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 35,926 psi | 90% | 1198 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,998 psi | 40% | 896 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 35,839 psi | 90% | 1283 fps | 100% |
| ReloadSwiss RS 24 | <<locked>> | 80% | 34,766 psi | 87% | 1378 fps | 95.1% |
| Rottweil P 806 | <<locked>> | 84% | 34,026 psi | 85% | 1388 fps | 100% |
| Shooters World Major Pistol*² | <<locked>> | 72% | 32,474 psi | 81% | 1358 fps | 92% |
| SNPE Vectan A0 | <<locked>> | 80% | 34,243 psi | 86% | 1230 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 34,824 psi | 87% | 1188 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 72% | 33,895 psi | 85% | 1198 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 35,201 psi | 88% | 1086 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 84% | 33,562 psi | 84% | 1280 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 33,228 psi | 83% | 1194 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 72% | 33,591 psi | 84% | 1368 fps | 99.5% |
| Somchem MP200² | <<locked>> | 72% | 35,041 psi | 88% | 1273 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 34,679 psi | 87% | 1243 fps | 100% |
| Somchem S221² | <<locked>> | 68% | 35,810 psi | 90% | 1368 fps | 97.7% |
| Vihtavuori 3N37² | <<locked>> | 76% | 32,605 psi | 82% | 1286 fps | 100% |
| Vihtavuori 3N38 | <<locked>> | 92% | 33,649 psi | 84% | 1352 fps | 95.4% |
| Vihtavuori N105 | <<locked>> | 96% | 32,227 psi | 81% | 1385 fps | 98.2% |
| Vihtavuori N320² | <<locked>> | 68% | 33,069 psi | 83% | 1142 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 31,908 psi | 80% | 1063 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 32,039 psi | 80% | 1188 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 34,882 psi | 87% | 1250 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 35,143 psi | 88% | 1312 fps | 100% |
| Winchester AutoComp | <<locked>> | 80% | 35,926 psi | 90% | 1234 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% | 24,163 psi | 61% | 1102 fps | 100% |
| Accurate No. 7*² | <<locked>> | 64% | 24,076 psi | 60% | 1217 fps | 86.9% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,947 psi | 63% | 1027 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 21,277 psi | 53% | 1024 fps | 100% |
| ADI AP 100*² | 9.9 gr | 60% | 14,228 psi | 36% | 945 fps | 87.1% |
| ADI AP 70N² | <<locked>> | 60% | 30,777 psi | 77% | 1168 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,803 psi | 67% | 955 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 25,991 psi | 65% | 978 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 25,034 psi | 63% | 1001 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 26,542 psi | 67% | 1060 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 22,220 psi | 56% | 1033 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 84% | 25,773 psi | 65% | 1234 fps | 86.8% |
| Alliant BULLSEYE² | <<locked>> | 60% | 27,644 psi | 69% | 1175 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 24,685 psi | 62% | 1037 fps | 100% |
| Alliant Herco² | 9 gr | 60% | 15,911 psi | 40% | 965 fps | 99.7% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 20,508 psi | 51% | 1125 fps | 92.6% |
| Alliant RED DOT² | <<locked>> | 60% | 23,902 psi | 60% | 1001 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 31,343 psi | 79% | 1230 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 21,611 psi | 54% | 1086 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,670 psi | 59% | 1017 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 15,389 psi | 39% | 896 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 25,788 psi | 65% | 1070 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 23,757 psi | 60% | 1073 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 21,393 psi | 54% | 909 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 30,313 psi | 76% | 1253 fps | 99.8% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,948 psi | 20% | 663 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 25,657 psi | 64% | 1099 fps | 100% |
| Lovex D037.1*² | <<locked>> | 64% | 24,076 psi | 60% | 1217 fps | 86.9% |
| Lovex S011² | <<locked>> | 60% | 31,444 psi | 79% | 1138 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 25,005 psi | 63% | 1112 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 20,378 psi | 51% | 1004 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 21,973 psi | 55% | 1037 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,945 psi | 58% | 1024 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 24,903 psi | 62% | 1037 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 27,833 psi | 70% | 1030 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 30,182 psi | 76% | 1220 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 29,037 psi | 73% | 1119 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,498 psi | 19% | 663 fps | 99.9% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 20,059 psi | 50% | 1063 fps | 100% |
| ReloadSwiss RS 24*² | <<locked>> | 64% | 21,103 psi | 53% | 1142 fps | 87.1% |
| Rottweil P 806*² | <<locked>> | 60% | 14,852 psi | 37% | 1040 fps | 93.5% |
| Shooters World Major Pistol*² | <<locked>> | 64% | 24,076 psi | 60% | 1217 fps | 86.9% |
| SNPE Vectan A0² | <<locked>> | 60% | 20,349 psi | 51% | 1030 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,976 psi | 63% | 1066 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 24,149 psi | 61% | 1070 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 28,732 psi | 72% | 1010 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 17,216 psi | 43% | 1001 fps | 95.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 23,656 psi | 59% | 1066 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 60% | 22,495 psi | 56% | 1184 fps | 95.9% |
| Somchem MP200² | <<locked>> | 60% | 24,743 psi | 62% | 1132 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 22,423 psi | 56% | 1073 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 27,122 psi | 68% | 1237 fps | 94.4% |
| Vihtavuori 3N37² | <<locked>> | 60% | 19,841 psi | 50% | 1079 fps | 98.3% |
| Vihtavuori 3N38*² | <<locked>> | 72% | 18,971 psi | 48% | 1089 fps | 86.2% |
| Vihtavuori N105*² | 13.4 gr | 72% | 15,418 psi | 39% | 1053 fps | 86.4% |
| Vihtavuori N320² | <<locked>> | 60% | 26,020 psi | 65% | 1056 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 13,343 psi | 33% | 794 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 24,990 psi | 63% | 1096 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 21,799 psi | 55% | 1070 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 17,332 psi | 43% | 1024 fps | 97.2% |
| Winchester AutoComp ² | <<locked>> | 60% | 21,118 psi | 53% | 1037 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 | 250gr | Rim Rock RNFP Top Shelf. Alliant BLUE DOT delivers the highest muzzle velocity at 1,388 fps; across all powders the maximum-charge window runs from 886 fps to 1,388 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 40–88 %, leaving at least 12 % 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 | 250gr | Rim Rock RNFP Top Shelf 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.