Load Specifications
Load data in caliber .460 Rowland with .452 | 180gr | Rim Rock RNFP Cowboy bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori 3N37, Alliant UNIQUE and Somchem MP200.
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: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 84% | 34,272 psi | 86% | 1348 fps | 99.1% |
| Accurate No. 5*² | <<locked>> | 68% | 31,531 psi | 79% | 1381 fps | 91.9% |
| Accurate Solo 1000 | <<locked>> | 84% | 33,170 psi | 83% | 1260 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 33,460 psi | 84% | 1325 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 32,938 psi | 83% | 1339 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 34,040 psi | 85% | 1155 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 35,070 psi | 88% | 1204 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 35,230 psi | 88% | 1257 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 34,548 psi | 87% | 1299 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 35,317 psi | 89% | 1342 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 33,025 psi | 83% | 1381 fps | 100% |
| Alliant Green Dot | <<locked>> | 88% | 33,997 psi | 85% | 1296 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 27,151 psi | 68% | 1296 fps | 99.2% |
| Alliant POWER PISTOL* | <<locked>> | 92% | 32,648 psi | 82% | 1440 fps | 89.6% |
| Alliant RED DOT | <<locked>> | 88% | 33,257 psi | 83% | 1260 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 33,765 psi | 85% | 1394 fps | 100% |
| Alliant UNIQUE | <<locked>> | 96% | 35,781 psi | 90% | 1430 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 34,766 psi | 87% | 1286 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 27,601 psi | 69% | 1220 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 35,302 psi | 89% | 1319 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 88% | 33,794 psi | 85% | 1345 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 33,315 psi | 84% | 1181 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 33,402 psi | 84% | 1309 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 76% | 33,605 psi | 84% | 1401 fps | 95% |
| Hodgdon Longshot² | <<locked>> | 72% | 32,851 psi | 82% | 1391 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,443 psi | 29% | 866 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 35,708 psi | 90% | 1375 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 31,531 psi | 79% | 1381 fps | 91.9% |
| Lovex S011² | <<locked>> | 76% | 35,563 psi | 89% | 1319 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 33,939 psi | 85% | 1365 fps | 100% |
| Maxam CSB 1 | <<locked>> | 96% | 33,895 psi | 85% | 1329 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 35,868 psi | 90% | 1371 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 35,723 psi | 90% | 1329 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 35,418 psi | 89% | 1302 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 33,040 psi | 83% | 1224 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 32,793 psi | 82% | 1378 fps | 99.3% |
| Ramshot True Blue² | <<locked>> | 72% | 34,113 psi | 86% | 1404 fps | 96.8% |
| Ramshot Zip² | <<locked>> | 64% | 32,126 psi | 81% | 1299 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 32,924 psi | 83% | 1322 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,515 psi | 26% | 860 fps | 98.4% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 33,460 psi | 84% | 1404 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 34,461 psi | 86% | 1299 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 28,369 psi | 71% | 1430 fps | 93.6% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 31,531 psi | 79% | 1381 fps | 91.9% |
| SNPE Vectan A0 | <<locked>> | 96% | 34,084 psi | 85% | 1352 fps | 99.9% |
| SNPE Vectan A1 | <<locked>> | 84% | 33,344 psi | 84% | 1306 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 35,418 psi | 89% | 1345 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 33,547 psi | 84% | 1188 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 32,750 psi | 82% | 1371 fps | 95.6% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 34,127 psi | 86% | 1342 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 35,911 psi | 90% | 1516 fps | 93.4% |
| Somchem MP200 | <<locked>> | 88% | 35,911 psi | 90% | 1414 fps | 99.9% |
| Somchem MS200 | <<locked>> | 92% | 35,447 psi | 89% | 1388 fps | 100% |
| Vihtavuori 3N37 | <<locked>> | 96% | 35,375 psi | 89% | 1440 fps | 97.5% |
| Vihtavuori N310² | <<locked>> | 68% | 34,548 psi | 87% | 1207 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 34,548 psi | 87% | 1302 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 21,480 psi | 54% | 1063 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 32,300 psi | 81% | 1339 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 35,041 psi | 88% | 1385 fps | 100% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 33,431 psi | 84% | 1404 fps | 97.1% |
| Winchester 231² | <<locked>> | 72% | 32,779 psi | 82% | 1309 fps | 100% |
| Winchester 244² | <<locked>> | 64% | 35,911 psi | 90% | 1335 fps | 100% |
| Winchester 572² | <<locked>> | 64% | 32,256 psi | 81% | 1391 fps | 95.5% |
| Winchester AutoComp | <<locked>> | 96% | 35,607 psi | 89% | 1371 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 16,520 psi | 41% | 1030 fps | 90.6% |
| Accurate No. 5*² | <<locked>> | 60% | 23,859 psi | 60% | 1243 fps | 87.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,420 psi | 46% | 1030 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 14,214 psi | 36% | 981 fps | 97.2% |
| ADI AP 70N² | <<locked>> | 60% | 20,769 psi | 52% | 1145 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 21,045 psi | 53% | 981 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 19,856 psi | 50% | 991 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 17,956 psi | 45% | 1001 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 19,102 psi | 48% | 1063 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 14,823 psi | 37% | 1001 fps | 99.2% |
| Alliant BULLSEYE² | <<locked>> | 60% | 19,160 psi | 48% | 1125 fps | 96.4% |
| Alliant Green Dot² | <<locked>> | 60% | 17,434 psi | 44% | 1030 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 10,588 psi | 27% | 886 fps | 85.9% |
| Alliant POWER PISTOL* | <<locked>> | 84% | 26,745 psi | 67% | 1335 fps | 86% |
| Alliant RED DOT² | <<locked>> | 60% | 16,955 psi | 43% | 997 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 21,509 psi | 54% | 1181 fps | 97.1% |
| Alliant UNIQUE*² | 7.1 gr | 60% | 14,417 psi | 36% | 1014 fps | 91.5% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 16,375 psi | 41% | 1001 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 9,892 psi | 25% | 853 fps | 98.3% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 17,143 psi | 43% | 1050 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 15,954 psi | 40% | 1030 fps | 97.9% |
| Hodgdon Clays² | <<locked>> | 60% | 16,288 psi | 41% | 925 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 29,414 psi | 74% | 1257 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 19,595 psi | 49% | 1145 fps | 86.2% |
| Hodgdon Longshot*² | <<locked>> | 60% | 21,741 psi | 55% | 1194 fps | 90.4% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,540 psi | 14% | 630 fps | 94.1% |
| Hodgdon Universal² | <<locked>> | 60% | 17,114 psi | 43% | 1063 fps | 99.2% |
| Lovex D036*² | <<locked>> | 60% | 23,815 psi | 60% | 1243 fps | 87.1% |
| Lovex S011² | <<locked>> | 60% | 22,263 psi | 56% | 1129 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 16,244 psi | 41% | 1053 fps | 95.8% |
| Maxam CSB 1² | <<locked>> | 60% | 13,692 psi | 34% | 961 fps | 96.8% |
| Maxam CSB 2² | <<locked>> | 60% | 13,677 psi | 34% | 1001 fps | 99.8% |
| Maxam CSB 3² | <<locked>> | 60% | 15,911 psi | 40% | 1007 fps | 99.9% |
| Maxam CSB 4² | <<locked>> | 60% | 17,463 psi | 44% | 1030 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 19,638 psi | 49% | 1033 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 19,957 psi | 50% | 1148 fps | 94.1% |
| Ramshot True Blue*² | <<locked>> | 60% | 22,684 psi | 57% | 1207 fps | 91.1% |
| Ramshot Zip² | <<locked>> | 60% | 28,326 psi | 71% | 1247 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 18,217 psi | 46% | 1093 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,279 psi | 13% | 620 fps | 88.1% |
| ReloadSwiss RS 20*² | <<locked>> | 60% | 12,386 psi | 31% | 971 fps | 91.3% |
| Rottweil P 801² | <<locked>> | 60% | 22,017 psi | 55% | 1129 fps | 100% |
| Rottweil P 806* | <<locked>> | 88% | 18,913 psi | 47% | 1243 fps | 86.6% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 23,815 psi | 60% | 1243 fps | 87.1% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,793 psi | 35% | 958 fps | 90.4% |
| SNPE Vectan A1² | <<locked>> | 60% | 17,651 psi | 44% | 1047 fps | 99.7% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 16,897 psi | 42% | 1033 fps | 97.4% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,191 psi | 56% | 1030 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 76% | 18,014 psi | 45% | 1093 fps | 86.1% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 16,404 psi | 41% | 1033 fps | 98.3% |
| SNPE Vectan SP 2* | <<locked>> | 80% | 24,990 psi | 63% | 1332 fps | 87.3% |
| Somchem MP200*² | 8 gr | 60% | 16,375 psi | 41% | 1056 fps | 92% |
| Somchem MS200*² | <<locked>> | 60% | 15,243 psi | 38% | 1010 fps | 93.5% |
| Vihtavuori 3N37*² | 9.7 gr | 68% | 15,882 psi | 40% | 1070 fps | 85.3% |
| Vihtavuori N310² | <<locked>> | 60% | 28,079 psi | 70% | 1129 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 17,289 psi | 43% | 1043 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,760 psi | 22% | 781 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 15,882 psi | 40% | 1056 fps | 99.3% |
| Vihtavuori N340*² | <<locked>> | 60% | 14,460 psi | 36% | 1001 fps | 92% |
| Vihtavuori N350*² | <<locked>> | 76% | 17,158 psi | 43% | 1102 fps | 87.2% |
| Winchester 231² | <<locked>> | 60% | 23,192 psi | 58% | 1165 fps | 100% |
| Winchester 244² | <<locked>> | 60% | 31,720 psi | 80% | 1286 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 28,152 psi | 71% | 1322 fps | 93.7% |
| Winchester AutoComp ² | <<locked>> | 60% | 13,938 psi | 35% | 981 fps | 95.9% |
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 41 powders for .460 Rowland loaded with the .452 | 180gr | Rim Rock RNFP Cowboy. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,516 fps; across all powders the maximum-charge window runs from 860 fps to 1,516 fps. Alliant Herco gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (275 MPa), the top charges use 26–90 %, 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. Vihtavuori 3N37, Alliant UNIQUE, Somchem MP200 rank at the top here: for .460 Rowland with the .452 | 180gr | Rim Rock RNFP Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Rottweil P 806, SNPE Vectan SP 2 burn incompletely and react more sensitively to barrel length and temperature. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon Clays 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.