Load Specifications
Load data in caliber .40 S&W with .400 | 165gr | X-TREME RP HP bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant UNIQUE, ReloadSwiss RS 20 and Maxam CSB 2.
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: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 76% | 26,919 psi | 82% | 1033 fps | 96.2% |
| Accurate No. 5*² | <<locked>> | 64% | 27,528 psi | 84% | 1093 fps | 87.9% |
| Accurate Solo 1000² | <<locked>> | 76% | 27,282 psi | 84% | 988 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 84% | 28,065 psi | 86% | 1050 fps | 100% |
| ADI AP 70N² | <<locked>> | 68% | 27,412 psi | 84% | 1050 fps | 100% |
| ADI APS 350² | <<locked>> | 72% | 29,066 psi | 89% | 915 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 26,861 psi | 82% | 922 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 27,644 psi | 85% | 968 fps | 100% |
| ADI AS 50N² | <<locked>> | 76% | 29,501 psi | 90% | 1030 fps | 100% |
| Alliant BE-86 | <<locked>> | 84% | 29,312 psi | 90% | 1060 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 72% | 26,890 psi | 82% | 1073 fps | 98.9% |
| Alliant Green Dot | <<locked>> | 80% | 29,095 psi | 89% | 1027 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 27,789 psi | 85% | 1089 fps | 98.7% |
| Alliant RED DOT | <<locked>> | 80% | 28,848 psi | 88% | 1001 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 68% | 27,528 psi | 84% | 1079 fps | 98.5% |
| Alliant UNIQUE | <<locked>> | 84% | 27,238 psi | 83% | 1086 fps | 98.5% |
| Baschieri & Pellagri 100 | <<locked>> | 80% | 28,921 psi | 89% | 1017 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 27,427 psi | 84% | 1020 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 76% | 28,427 psi | 87% | 1037 fps | 100% |
| Hodgdon CFE Pistol | <<locked>> | 80% | 28,340 psi | 87% | 1060 fps | 100% |
| Hodgdon Clays | <<locked>> | 84% | 28,572 psi | 88% | 938 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 68% | 25,802 psi | 79% | 1060 fps | 89.4% |
| Hodgdon Longshot*² | <<locked>> | 68% | 29,037 psi | 89% | 1109 fps | 93.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 13,024 psi | 40% | 741 fps | 100% |
| Hodgdon Universal² | <<locked>> | 76% | 27,412 psi | 84% | 1050 fps | 100% |
| Lovex D036*² | <<locked>> | 64% | 27,485 psi | 84% | 1093 fps | 87.9% |
| Lovex S011² | <<locked>> | 68% | 28,427 psi | 87% | 1027 fps | 100% |
| Lovex S020² | <<locked>> | 76% | 27,209 psi | 83% | 1060 fps | 99.5% |
| Maxam CSB 1 | <<locked>> | 88% | 28,384 psi | 87% | 1050 fps | 100% |
| Maxam CSB 2 | <<locked>> | 84% | 27,456 psi | 84% | 1056 fps | 100% |
| Maxam CSB 3 | <<locked>> | 80% | 27,209 psi | 83% | 1017 fps | 100% |
| Maxam CSB 4 | <<locked>> | 80% | 29,457 psi | 90% | 1030 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 27,760 psi | 85% | 968 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 72% | 29,356 psi | 90% | 1109 fps | 97.6% |
| Ramshot True Blue*² | <<locked>> | 64% | 26,527 psi | 81% | 1066 fps | 92% |
| ReloadSwiss RS 12² | <<locked>> | 72% | 26,876 psi | 82% | 1033 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 11,835 psi | 36% | 732 fps | 98.7% |
| ReloadSwiss RS 20 | <<locked>> | 88% | 27,514 psi | 84% | 1106 fps | 99.7% |
| Rottweil P 801² | <<locked>> | 68% | 28,877 psi | 88% | 1027 fps | 100% |
| Rottweil P 806*ᴾ | <<locked>> | 100% | 28,152 psi | 86% | 1198 fps | 91.7% |
| Shooters World Auto Pistol*² | <<locked>> | 64% | 27,485 psi | 84% | 1093 fps | 87.9% |
| SNPE Vectan A0 | <<locked>> | 88% | 28,645 psi | 88% | 1063 fps | 98.7% |
| SNPE Vectan A1² | <<locked>> | 76% | 27,891 psi | 85% | 1030 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 80% | 29,428 psi | 90% | 1060 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 27,876 psi | 85% | 932 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 92% | 27,296 psi | 84% | 1070 fps | 91.6% |
| SNPE Vectan BA9 1/2 | <<locked>> | 80% | 27,920 psi | 86% | 1050 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 84% | 28,601 psi | 88% | 1165 fps | 87.8% |
| Somchem MP200² | <<locked>> | 76% | 26,469 psi | 81% | 1056 fps | 97.3% |
| Somchem MS200 | <<locked>> | 84% | 29,283 psi | 90% | 1086 fps | 99.5% |
| Vihtavuori 3N37* | <<locked>> | 88% | 28,239 psi | 87% | 1112 fps | 93.5% |
| Vihtavuori N320² | <<locked>> | 76% | 27,963 psi | 86% | 1020 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 22,205 psi | 68% | 892 fps | 100% |
| Vihtavuori N330 | <<locked>> | 80% | 29,066 psi | 89% | 1086 fps | 100% |
| Vihtavuori N340 | <<locked>> | 84% | 28,616 psi | 88% | 1079 fps | 99% |
| Vihtavuori N350* | <<locked>> | 96% | 29,501 psi | 90% | 1125 fps | 94.4% |
| Winchester 231² | <<locked>> | 68% | 29,428 psi | 90% | 1056 fps | 100% |
| Winchester AutoComp | <<locked>> | 84% | 27,282 psi | 84% | 1050 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 17,114 psi | 52% | 863 fps | 89.7% |
| Accurate No. 5*² | <<locked>> | 60% | 23,888 psi | 73% | 1033 fps | 85.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 18,594 psi | 57% | 860 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 15,113 psi | 46% | 827 fps | 96.9% |
| ADI AP 70N² | <<locked>> | 60% | 21,727 psi | 67% | 961 fps | 99.9% |
| ADI APS 350² | <<locked>> | 60% | 21,683 psi | 66% | 823 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 20,320 psi | 62% | 833 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 19,450 psi | 60% | 853 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 19,783 psi | 61% | 889 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 15,780 psi | 48% | 846 fps | 99.1% |
| Alliant BULLSEYE² | <<locked>> | 60% | 19,653 psi | 60% | 945 fps | 95.6% |
| Alliant Green Dot² | <<locked>> | 60% | 18,101 psi | 55% | 860 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 11,748 psi | 36% | 751 fps | 86.3% |
| Alliant RED DOT² | <<locked>> | 60% | 17,985 psi | 55% | 840 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 21,814 psi | 67% | 984 fps | 96.2% |
| Alliant UNIQUE*² | 4.4 gr | 60% | 15,171 psi | 46% | 850 fps | 90.8% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 17,231 psi | 53% | 843 fps | 99.9% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 10,994 psi | 34% | 725 fps | 98.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 18,043 psi | 55% | 886 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 17,042 psi | 52% | 873 fps | 97.7% |
| Hodgdon Clays² | <<locked>> | 60% | 17,071 psi | 52% | 781 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 64% | 23,090 psi | 71% | 1014 fps | 87.5% |
| Hodgdon Longshot*² | <<locked>> | 60% | 21,944 psi | 67% | 994 fps | 88.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,991 psi | 21% | 548 fps | 96.6% |
| Hodgdon Universal² | <<locked>> | 60% | 18,188 psi | 56% | 896 fps | 99.1% |
| Lovex D036*² | <<locked>> | 60% | 23,902 psi | 73% | 1033 fps | 85.4% |
| Lovex S011² | <<locked>> | 60% | 22,872 psi | 70% | 948 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 17,202 psi | 53% | 889 fps | 95.4% |
| Maxam CSB 1² | <<locked>> | 60% | 14,692 psi | 45% | 810 fps | 96.6% |
| Maxam CSB 2² | 4.2 gr | 60% | 14,852 psi | 46% | 846 fps | 99.8% |
| Maxam CSB 3² | <<locked>> | 60% | 16,882 psi | 52% | 853 fps | 99.9% |
| Maxam CSB 4² | <<locked>> | 60% | 18,173 psi | 56% | 866 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 20,131 psi | 62% | 866 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 20,595 psi | 63% | 965 fps | 93.2% |
| Ramshot True Blue*² | <<locked>> | 60% | 23,061 psi | 71% | 1010 fps | 89.8% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 19,479 psi | 60% | 925 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 6,918 psi | 21% | 551 fps | 92.2% |
| ReloadSwiss RS 20*² | 4.6 gr | 60% | 13,271 psi | 41% | 820 fps | 91% |
| Rottweil P 801² | <<locked>> | 60% | 22,742 psi | 70% | 945 fps | 100% |
| Rottweil P 806* | <<locked>> | 88% | 19,537 psi | 60% | 1047 fps | 85.1% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 23,902 psi | 73% | 1033 fps | 85.4% |
| SNPE Vectan A0*² | <<locked>> | 60% | 14,533 psi | 45% | 804 fps | 89.8% |
| SNPE Vectan A1² | <<locked>> | 60% | 18,333 psi | 56% | 879 fps | 99.5% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 17,535 psi | 54% | 869 fps | 96.9% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,989 psi | 70% | 873 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 80% | 20,146 psi | 62% | 945 fps | 86.4% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 17,376 psi | 53% | 876 fps | 98.1% |
| SNPE Vectan SP 2* | <<locked>> | 80% | 25,527 psi | 78% | 1115 fps | 85.8% |
| Somchem MP200*² | <<locked>> | 60% | 17,608 psi | 54% | 896 fps | 91.7% |
| Somchem MS200*² | <<locked>> | 60% | 16,244 psi | 50% | 856 fps | 93.2% |
| Vihtavuori 3N37*² | <<locked>> | 72% | 18,710 psi | 57% | 945 fps | 86.5% |
| Vihtavuori N320² | <<locked>> | 60% | 18,159 psi | 56% | 879 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 10,051 psi | 31% | 663 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 16,302 psi | 50% | 883 fps | 98.9% |
| Vihtavuori N340*² | <<locked>> | 60% | 14,997 psi | 46% | 833 fps | 91.1% |
| Vihtavuori N350*² | <<locked>> | 76% | 18,159 psi | 56% | 932 fps | 86.4% |
| Winchester 231² | <<locked>> | 60% | 23,366 psi | 72% | 974 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,273 psi | 47% | 837 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 18 powders for .40 S&W loaded with the .400 | 165gr | X-TREME RP HP. Vihtavuori N350 delivers the highest muzzle velocity at 1,125 fps; across all powders the maximum-charge window runs from 732 fps to 1,125 fps. Alliant Herco gives the best case fill at 100 %, and 18 of the 18 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (225 MPa), the top charges use 36–90 %, 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, ReloadSwiss RS 20, Maxam CSB 2 rank at the top here: for .40 S&W with the .400 | 165gr | X-TREME RP HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Vihtavuori 3N37, Vihtavuori N350 burn incompletely and react more sensitively to barrel length and temperature. Accurate Solo 1250, Alliant BE-86, Alliant Herco 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.