Load Specifications
Load data in caliber .460 Rowland with .452 | 160gr | Rim Rock RNFP Cowboy bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, Somchem MP200 and ReloadSwiss RS 20.
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% | 34,301 psi | 86% | 1467 fps | 98.7% |
| Accurate No. 5*² | <<locked>> | 68% | 31,575 psi | 79% | 1499 fps | 90.9% |
| Accurate Solo 1000 | <<locked>> | 84% | 33,170 psi | 83% | 1378 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 33,547 psi | 84% | 1447 fps | 100% |
| ADI AP 70N² | <<locked>> | 76% | 32,590 psi | 82% | 1457 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 33,808 psi | 85% | 1260 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 34,766 psi | 87% | 1312 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 35,404 psi | 89% | 1378 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 34,853 psi | 87% | 1424 fps | 100% |
| Alliant BE-86 | <<locked>> | 92% | 35,563 psi | 89% | 1463 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 32,822 psi | 82% | 1503 fps | 99.9% |
| Alliant Green Dot | <<locked>> | 88% | 34,301 psi | 86% | 1421 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 27,427 psi | 69% | 1411 fps | 98.8% |
| Alliant POWER PISTOL* | <<locked>> | 92% | 32,967 psi | 83% | 1565 fps | 88.6% |
| Alliant RED DOT | <<locked>> | 92% | 35,679 psi | 89% | 1407 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 34,374 psi | 86% | 1526 fps | 99.9% |
| Alliant UNIQUE | <<locked>> | 96% | 35,650 psi | 89% | 1555 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 34,592 psi | 87% | 1404 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 27,862 psi | 70% | 1332 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 84% | 35,563 psi | 89% | 1440 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 88% | 33,852 psi | 85% | 1463 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 33,692 psi | 84% | 1296 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 33,098 psi | 83% | 1424 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 76% | 33,576 psi | 84% | 1519 fps | 94.1% |
| Hodgdon Longshot² | <<locked>> | 72% | 33,127 psi | 83% | 1512 fps | 95.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,661 psi | 29% | 948 fps | 100% |
| Hodgdon Universal | <<locked>> | 88% | 35,694 psi | 89% | 1499 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 31,531 psi | 79% | 1496 fps | 90.9% |
| Lovex S011² | <<locked>> | 76% | 35,476 psi | 89% | 1437 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 33,562 psi | 84% | 1480 fps | 100% |
| Maxam CSB 1 | <<locked>> | 96% | 33,794 psi | 85% | 1447 fps | 100% |
| Maxam CSB 2 | <<locked>> | 96% | 35,491 psi | 89% | 1490 fps | 100% |
| Maxam CSB 3 | <<locked>> | 92% | 35,404 psi | 89% | 1447 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 34,911 psi | 88% | 1417 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 33,489 psi | 84% | 1345 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 33,344 psi | 84% | 1506 fps | 99% |
| Ramshot True Blue² | <<locked>> | 72% | 34,418 psi | 86% | 1522 fps | 96.1% |
| Ramshot Zip² | <<locked>> | 64% | 32,387 psi | 81% | 1421 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 32,677 psi | 82% | 1437 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,399 psi | 26% | 932 fps | 97.6% |
| ReloadSwiss RS 20 | <<locked>> | 96% | 33,634 psi | 84% | 1532 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 34,824 psi | 87% | 1424 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 28,993 psi | 73% | 1552 fps | 92.8% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 31,531 psi | 79% | 1496 fps | 90.9% |
| SNPE Vectan A0 | <<locked>> | 96% | 34,650 psi | 87% | 1480 fps | 99.8% |
| SNPE Vectan A1 | <<locked>> | 84% | 33,649 psi | 84% | 1427 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 88% | 35,418 psi | 89% | 1467 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 33,402 psi | 84% | 1296 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 32,909 psi | 83% | 1490 fps | 94.9% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 34,026 psi | 85% | 1463 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 92% | 35,926 psi | 90% | 1637 fps | 92.3% |
| Somchem MP200 | <<locked>> | 88% | 36,027 psi | 90% | 1542 fps | 99.7% |
| Somchem MS200 | <<locked>> | 92% | 35,491 psi | 89% | 1509 fps | 100% |
| Vihtavuori 3N37 | <<locked>> | 96% | 35,360 psi | 89% | 1558 fps | 96.8% |
| Vihtavuori N310² | <<locked>> | 68% | 34,621 psi | 87% | 1319 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 33,997 psi | 85% | 1417 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 21,625 psi | 54% | 1165 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 32,285 psi | 81% | 1460 fps | 100% |
| Vihtavuori N340 | <<locked>> | 92% | 34,911 psi | 88% | 1503 fps | 99.9% |
| Vihtavuori N350ᴾ | <<locked>> | 100% | 33,214 psi | 83% | 1522 fps | 96.4% |
| Winchester 231² | <<locked>> | 72% | 32,996 psi | 83% | 1427 fps | 100% |
| Winchester 572*² | <<locked>> | 64% | 32,779 psi | 82% | 1516 fps | 94.8% |
| Winchester AutoComp | <<locked>> | 96% | 36,013 psi | 90% | 1496 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% | 16,244 psi | 41% | 1112 fps | 89.2% |
| Accurate No. 5*² | <<locked>> | 60% | 23,743 psi | 60% | 1342 fps | 85.8% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,304 psi | 46% | 1122 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 14,301 psi | 36% | 1066 fps | 96.4% |
| ADI AP 70N² | <<locked>> | 60% | 20,697 psi | 52% | 1243 fps | 99.8% |
| ADI APS 350² | <<locked>> | 60% | 21,524 psi | 54% | 1079 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 19,986 psi | 50% | 1089 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 18,086 psi | 45% | 1096 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 18,884 psi | 47% | 1152 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 14,823 psi | 37% | 1086 fps | 98.7% |
| Alliant BULLSEYE² | <<locked>> | 60% | 18,913 psi | 47% | 1217 fps | 95.3% |
| Alliant Green Dot² | <<locked>> | 60% | 17,332 psi | 43% | 1119 fps | 100% |
| Alliant Herco*² | <<locked>> | 64% | 11,748 psi | 29% | 1004 fps | 86.5% |
| Alliant POWER PISTOL* | <<locked>> | 88% | 29,414 psi | 74% | 1499 fps | 86.6% |
| Alliant RED DOT² | <<locked>> | 60% | 17,202 psi | 43% | 1096 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 21,248 psi | 53% | 1276 fps | 96.1% |
| Alliant UNIQUE*² | 7.9 gr | 60% | 14,301 psi | 36% | 1096 fps | 90% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 16,476 psi | 41% | 1093 fps | 99.9% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,008 psi | 25% | 932 fps | 97.7% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 17,071 psi | 43% | 1138 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 15,954 psi | 40% | 1119 fps | 97.2% |
| Hodgdon Clays² | <<locked>> | 60% | 16,665 psi | 42% | 1020 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 28,964 psi | 73% | 1365 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 22,655 psi | 57% | 1309 fps | 87.6% |
| Hodgdon Longshot*² | <<locked>> | 60% | 21,770 psi | 55% | 1296 fps | 89.3% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,468 psi | 14% | 679 fps | 92.7% |
| Hodgdon Universal² | <<locked>> | 60% | 17,376 psi | 44% | 1161 fps | 98.9% |
| Lovex D036*² | <<locked>> | 60% | 23,699 psi | 59% | 1342 fps | 85.8% |
| Lovex S011² | <<locked>> | 60% | 22,365 psi | 56% | 1230 fps | 100% |
| Lovex S020*² | <<locked>> | 60% | 16,244 psi | 41% | 1142 fps | 94.8% |
| Maxam CSB 1² | <<locked>> | 60% | 13,460 psi | 34% | 1037 fps | 95.7% |
| Maxam CSB 2² | <<locked>> | 60% | 13,373 psi | 34% | 1076 fps | 99.3% |
| Maxam CSB 3² | <<locked>> | 60% | 16,128 psi | 40% | 1102 fps | 99.8% |
| Maxam CSB 4² | <<locked>> | 60% | 17,303 psi | 43% | 1119 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 20,175 psi | 51% | 1138 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 19,914 psi | 50% | 1243 fps | 93.1% |
| Ramshot True Blue*² | <<locked>> | 60% | 22,698 psi | 57% | 1306 fps | 90% |
| Ramshot Zip² | <<locked>> | 60% | 28,384 psi | 71% | 1362 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 18,391 psi | 46% | 1194 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 5,178 psi | 13% | 669 fps | 86.4% |
| ReloadSwiss RS 20*² | 8.2 gr | 60% | 12,473 psi | 31% | 1056 fps | 90% |
| Rottweil P 801² | <<locked>> | 60% | 22,002 psi | 55% | 1230 fps | 100% |
| Rottweil P 806* | <<locked>> | 88% | 19,131 psi | 48% | 1342 fps | 85.2% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 23,699 psi | 59% | 1342 fps | 85.8% |
| SNPE Vectan A0*² | <<locked>> | 60% | 13,706 psi | 34% | 1037 fps | 89.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 17,651 psi | 44% | 1138 fps | 99.4% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 16,897 psi | 42% | 1122 fps | 96.7% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,582 psi | 57% | 1135 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 20,015 psi | 50% | 1234 fps | 86.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 16,230 psi | 41% | 1119 fps | 97.5% |
| SNPE Vectan SP 2* | <<locked>> | 80% | 25,048 psi | 63% | 1437 fps | 86% |
| Somchem MP200*² | 9 gr | 60% | 16,563 psi | 42% | 1148 fps | 91.1% |
| Somchem MS200*² | <<locked>> | 60% | 15,432 psi | 39% | 1102 fps | 92.6% |
| Vihtavuori 3N37*² | <<locked>> | 72% | 18,014 psi | 45% | 1214 fps | 86.3% |
| Vihtavuori N310² | <<locked>> | 60% | 27,427 psi | 69% | 1227 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 17,405 psi | 44% | 1138 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,760 psi | 22% | 850 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 15,577 psi | 39% | 1138 fps | 98.6% |
| Vihtavuori N340*² | <<locked>> | 60% | 14,214 psi | 36% | 1076 fps | 90.4% |
| Vihtavuori N350*² | <<locked>> | 76% | 17,303 psi | 43% | 1194 fps | 86% |
| Winchester 231² | <<locked>> | 60% | 23,279 psi | 58% | 1273 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 28,007 psi | 70% | 1430 fps | 92.5% |
| Winchester AutoComp *² | <<locked>> | 60% | 13,895 psi | 35% | 1063 fps | 94.8% |
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 | 160gr | Rim Rock RNFP Cowboy. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,637 fps; across all powders the maximum-charge window runs from 932 fps to 1,637 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. Alliant UNIQUE, Somchem MP200, ReloadSwiss RS 20 rank at the top here: for .460 Rowland with the .452 | 160gr | 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 BA7 1/2, SNPE Vectan SP 2 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.