Load Specifications
Load data in caliber .400 Cor-Bon with .401 | 180gr | Rim Rock RNFP Cowboy bullet and 57 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 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: 5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 72% | 30,516 psi | 87% | 1181 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 30,400 psi | 87% | 1096 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 76% | 28,921 psi | 83% | 1135 fps | 100% |
| ADI AP 100 | <<locked>> | 96% | 30,937 psi | 88% | 1257 fps | 95.2% |
| ADI AP 70N² | <<locked>> | 64% | 29,776 psi | 85% | 1158 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 30,153 psi | 86% | 994 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 31,343 psi | 90% | 1037 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 29,544 psi | 84% | 1060 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 28,776 psi | 82% | 1093 fps | 100% |
| Alliant BE-86² | <<locked>> | 76% | 29,689 psi | 85% | 1135 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 68% | 29,820 psi | 85% | 1201 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 29,167 psi | 83% | 1099 fps | 100% |
| Alliant Herco | <<locked>> | 92% | 29,834 psi | 85% | 1207 fps | 100% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 31,198 psi | 89% | 1302 fps | 94.6% |
| Alliant RED DOT² | <<locked>> | 76% | 30,850 psi | 88% | 1093 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 30,545 psi | 87% | 1214 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 76% | 28,790 psi | 82% | 1198 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 29,066 psi | 83% | 1089 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 92% | 29,849 psi | 85% | 1115 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 28,471 psi | 81% | 1106 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 30,705 psi | 88% | 1030 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 29,602 psi | 85% | 1227 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 15,026 psi | 43% | 846 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 30,487 psi | 87% | 1168 fps | 100% |
| Lovex S011² | <<locked>> | 64% | 30,705 psi | 88% | 1129 fps | 100% |
| Lovex S020² | <<locked>> | 72% | 30,661 psi | 88% | 1188 fps | 100% |
| Maxam CSB 1 | <<locked>> | 80% | 29,501 psi | 84% | 1138 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 28,703 psi | 82% | 1135 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 30,429 psi | 87% | 1129 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 29,733 psi | 85% | 1099 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 30,240 psi | 86% | 1060 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 64% | 29,182 psi | 83% | 1198 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 68% | 30,966 psi | 88% | 1148 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 13,634 psi | 39% | 846 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 29,718 psi | 85% | 1211 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 80% | 28,805 psi | 82% | 1257 fps | 87.4% |
| Rottweil P 801² | <<locked>> | 64% | 31,662 psi | 90% | 1122 fps | 100% |
| Rottweil P 806 | <<locked>> | 88% | 29,689 psi | 85% | 1319 fps | 98.5% |
| SNPE Vectan A0 | <<locked>> | 80% | 29,472 psi | 84% | 1165 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 30,458 psi | 87% | 1135 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 72% | 29,428 psi | 84% | 1138 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 64% | 28,877 psi | 83% | 1010 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 88% | 31,473 psi | 90% | 1237 fps | 98.9% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 29,008 psi | 83% | 1142 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 76% | 30,777 psi | 88% | 1309 fps | 96.2% |
| Somchem MP200² | <<locked>> | 72% | 30,095 psi | 86% | 1204 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 30,356 psi | 87% | 1188 fps | 100% |
| Somchem S221*² | <<locked>> | 68% | 29,675 psi | 85% | 1250 fps | 91.3% |
| Vihtavuori 3N37 | <<locked>> | 80% | 30,501 psi | 87% | 1243 fps | 99.3% |
| Vihtavuori 3N38* | <<locked>> | 96% | 30,530 psi | 87% | 1276 fps | 89.3% |
| Vihtavuori N105*ᴾ | <<locked>> | 100% | 27,992 psi | 80% | 1293 fps | 92.2% |
| Vihtavuori N320² | <<locked>> | 68% | 28,485 psi | 81% | 1093 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 27,543 psi | 79% | 1017 fps | 100% |
| Vihtavuori N330² | <<locked>> | 72% | 30,676 psi | 88% | 1175 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 29,617 psi | 85% | 1181 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 29,095 psi | 83% | 1220 fps | 99.2% |
| Winchester AutoComp | <<locked>> | 80% | 31,357 psi | 90% | 1181 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. 2² | <<locked>> | 60% | 20,871 psi | 60% | 1030 fps | 98.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 22,176 psi | 63% | 984 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 18,246 psi | 52% | 968 fps | 100% |
| ADI AP 100*² | <<locked>> | 76% | 18,579 psi | 53% | 1033 fps | 86.9% |
| ADI AP 70N² | <<locked>> | 60% | 26,165 psi | 75% | 1109 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 25,063 psi | 72% | 932 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 23,540 psi | 67% | 942 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 21,915 psi | 63% | 955 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 23,627 psi | 68% | 1020 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 18,739 psi | 54% | 974 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 24,062 psi | 69% | 1112 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 21,321 psi | 61% | 988 fps | 100% |
| Alliant Herco² | 6.1 gr | 60% | 13,402 psi | 38% | 889 fps | 95.6% |
| Alliant POWER PISTOL*² | <<locked>> | 64% | 19,348 psi | 55% | 1076 fps | 86.5% |
| Alliant RED DOT² | <<locked>> | 60% | 21,509 psi | 61% | 965 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 26,890 psi | 77% | 1161 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 18,478 psi | 53% | 1014 fps | 98.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 20,610 psi | 59% | 971 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 12,937 psi | 37% | 843 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 22,307 psi | 64% | 1024 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 19,754 psi | 56% | 883 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 25,425 psi | 73% | 1158 fps | 96.1% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,947 psi | 20% | 623 fps | 99.7% |
| Hodgdon Universal² | <<locked>> | 60% | 22,234 psi | 64% | 1047 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 27,543 psi | 79% | 1089 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 21,422 psi | 61% | 1050 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 17,535 psi | 50% | 948 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 18,173 psi | 52% | 978 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 19,972 psi | 57% | 978 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 21,640 psi | 62% | 988 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 24,540 psi | 70% | 988 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 25,947 psi | 74% | 1152 fps | 99.8% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 24,250 psi | 69% | 1060 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 6,382 psi | 18% | 610 fps | 96.6% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 16,331 psi | 47% | 984 fps | 99.3% |
| ReloadSwiss RS 24*² | <<locked>> | 76% | 25,454 psi | 73% | 1198 fps | 85.1% |
| Rottweil P 801² | <<locked>> | 60% | 27,804 psi | 79% | 1076 fps | 100% |
| Rottweil P 806*² | 10.4 gr | 64% | 13,039 psi | 37% | 974 fps | 85.8% |
| SNPE Vectan A0² | <<locked>> | 60% | 17,172 psi | 49% | 955 fps | 98.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 22,104 psi | 63% | 1020 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 21,234 psi | 61% | 1020 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 26,513 psi | 76% | 981 fps | 100% |
| SNPE Vectan BA7 1/2*² | 7.1 gr | 60% | 14,431 psi | 41% | 912 fps | 88.5% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 20,566 psi | 59% | 1014 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 17,985 psi | 51% | 1066 fps | 87.6% |
| Somchem MP200² | <<locked>> | 60% | 21,350 psi | 61% | 1063 fps | 99.2% |
| Somchem MS200² | <<locked>> | 60% | 19,638 psi | 56% | 1014 fps | 99.7% |
| Somchem S221*² | <<locked>> | 60% | 22,756 psi | 65% | 1129 fps | 86.7% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 16,346 psi | 47% | 984 fps | 92.1% |
| Vihtavuori 3N38* | <<locked>> | 88% | 24,192 psi | 69% | 1171 fps | 85.1% |
| Vihtavuori N105* | <<locked>> | 88% | 19,885 psi | 57% | 1135 fps | 85.4% |
| Vihtavuori N320² | <<locked>> | 60% | 22,394 psi | 64% | 1010 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,226 psi | 32% | 751 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 21,292 psi | 61% | 1043 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 18,739 psi | 54% | 1004 fps | 99.2% |
| Vihtavuori N350*² | <<locked>> | 60% | 14,243 psi | 41% | 932 fps | 90.2% |
| Winchester AutoComp ² | <<locked>> | 60% | 18,115 psi | 52% | 978 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 57 powders for .400 Cor-Bon loaded with the .401 | 180gr | Rim Rock RNFP Cowboy. Rottweil P 806 delivers the highest muzzle velocity at 1,319 fps; across all powders the maximum-charge window runs from 846 fps to 1,319 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 19 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (241 MPa), the top charges use 39–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N105 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, Alliant Herco rank at the top here: for .400 Cor-Bon with the .401 | 180gr | Rim Rock RNFP Cowboy they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant POWER PISTOL, ReloadSwiss RS 24, Somchem S221 burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 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.