Load data for .400 Cor-Bon + .401 | 180gr | Geco FMJ FLAT NOSE

.400 Cor-Bon cartridge drawing
Geco logo

Load Specifications

Bullet Manufacturer:Geco
Bullet Weight:180 gr
Bullet Diameter:0.401"
Bullet Length:<<locked>>
Case Length (l3):0.899"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:25.46 Grains of Water
Primer Size:Large Pistol (LP)
Barrel Length:5"
Max. allowed Pressure:35,000 psi

Load data in caliber .400 Cor-Bon with .401 | 180gr | Geco FMJ FLAT NOSE 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"

PowderChargeFRMaxP%V(0)z
Accurate No. 2²<<locked>>72%30,255 psi86%1175 fps100%
Accurate Solo 1000²<<locked>>72%30,081 psi86%1089 fps100%
Accurate Solo 1250²<<locked>>76%28,616 psi82%1129 fps100%
ADI AP 100*<<locked>>96%30,255 psi86%1243 fps94.8%
ADI AP 70N²<<locked>>64%29,457 psi84%1152 fps100%
ADI APS 350²<<locked>>68%29,718 psi85%984 fps100%
ADI APS 450²<<locked>>72%30,980 psi89%1033 fps100%
ADI AS 30²<<locked>>72%29,994 psi86%1063 fps100%
ADI AS 50N²<<locked>>72%31,662 psi90%1125 fps100%
Alliant BE-86²<<locked>>76%29,428 psi84%1132 fps100%
Alliant BULLSEYE²<<locked>>68%29,501 psi84%1194 fps100%
Alliant Green Dot²<<locked>>72%28,805 psi82%1093 fps100%
Alliant Herco<<locked>>92%29,660 psi85%1204 fps100%
Alliant POWER PISTOL*<<locked>>80%31,111 psi89%1296 fps94.5%
Alliant RED DOT²<<locked>>76%31,328 psi90%1096 fps100%
Alliant Sport Pistol²<<locked>>64%30,269 psi86%1207 fps100%
Alliant UNIQUE<<locked>>80%31,415 psi90%1230 fps100%
Baschieri & Pellagri 100²<<locked>>72%28,790 psi82%1083 fps100%
Baschieri & Pellagri 102 Pistol<<locked>>92%29,689 psi85%1112 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>72%31,531 psi90%1138 fps100%
Hodgdon CFE Pistol²<<locked>>72%28,413 psi81%1135 fps100%
Hodgdon Clays<<locked>>80%30,356 psi87%1024 fps100%
Hodgdon HS-6²<<locked>>64%29,530 psi84%1220 fps97.7%
Hodgdon TrailBossᴾ<<locked>>100%14,736 psi42%840 fps100%
Hodgdon Universal²<<locked>>72%30,168 psi86%1161 fps100%
Lovex S011²<<locked>>64%31,212 psi89%1132 fps100%
Lovex S020²<<locked>>72%30,414 psi87%1181 fps100%
Maxam CSB 1<<locked>>80%29,225 psi83%1132 fps100%
Maxam CSB 2<<locked>>80%31,502 psi90%1168 fps100%
Maxam CSB 3²<<locked>>76%30,095 psi86%1122 fps100%
Maxam CSB 4²<<locked>>72%29,385 psi84%1093 fps100%
Maxam CSB 5²<<locked>>68%29,834 psi85%1053 fps100%
Ramshot Silhouette²<<locked>>64%28,964 psi83%1194 fps100%
ReloadSwiss RS 12²<<locked>>68%30,603 psi87%1142 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%13,402 psi38%840 fps100%
ReloadSwiss RS 20<<locked>>80%29,515 psi84%1207 fps100%
Rottweil P 801²<<locked>>64%31,314 psi89%1119 fps100%
Rottweil P 806<<locked>>88%29,153 psi83%1309 fps98.3%
SNPE Vectan A0<<locked>>80%29,254 psi84%1158 fps100%
SNPE Vectan A1²<<locked>>72%30,255 psi86%1132 fps100%
SNPE Vectan BA 9²<<locked>>72%29,225 psi83%1135 fps100%
SNPE Vectan BA10²<<locked>>64%28,514 psi81%1004 fps100%
SNPE Vectan BA7 1/2<<locked>>88%31,401 psi90%1234 fps98.8%
SNPE Vectan BA9 1/2²<<locked>>72%28,732 psi82%1135 fps100%
SNPE Vectan SP 2²<<locked>>76%30,632 psi88%1306 fps96.1%
Somchem MP200²<<locked>>72%29,878 psi85%1198 fps100%
Somchem MS200²<<locked>>76%30,139 psi86%1181 fps100%
Somchem S221*²<<locked>>68%29,646 psi85%1247 fps91.2%
Vihtavuori 3N37<<locked>>80%29,689 psi85%1230 fps99.1%
Vihtavuori 3N38*<<locked>>96%29,936 psi86%1266 fps88.9%
Vihtavuori N105*ᴾ<<locked>>100%27,340 psi78%1280 fps91.7%
Vihtavuori N320²<<locked>>72%31,502 psi90%1125 fps100%
Vihtavuori N32C Tin Starᴾ<<locked>>100%27,253 psi78%1014 fps100%
Vihtavuori N330²<<locked>>72%30,385 psi87%1168 fps100%
Vihtavuori N340²<<locked>>76%29,327 psi84%1175 fps100%
Vihtavuori N350<<locked>>84%28,979 psi83%1217 fps99.1%
Winchester AutoComp <<locked>>80%30,545 psi87%1168 fps100%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 5"

PowderChargeFRMaxP%V(0)z
Accurate No. 2²<<locked>>60%20,566 psi59%1024 fps98.2%
Accurate Solo 1000²<<locked>>60%21,814 psi62%978 fps100%
Accurate Solo 1250²<<locked>>60%18,507 psi53%971 fps100%
ADI AP 100*²<<locked>>76%18,405 psi53%1027 fps86.6%
ADI AP 70N²<<locked>>60%25,875 psi74%1102 fps100%
ADI APS 350²<<locked>>60%24,584 psi70%922 fps100%
ADI APS 450²<<locked>>60%23,148 psi66%932 fps100%
ADI AS 30²<<locked>>60%22,234 psi64%958 fps100%
ADI AS 50N²<<locked>>60%23,264 psi66%1014 fps100%
Alliant BE-86²<<locked>>60%19,000 psi54%978 fps100%
Alliant BULLSEYE²<<locked>>60%23,743 psi68%1106 fps100%
Alliant Green Dot²<<locked>>60%21,640 psi62%991 fps100%
Alliant Herco²6 gr60%13,184 psi38%883 fps95.3%
Alliant POWER PISTOL*²<<locked>>64%19,189 psi55%1070 fps86.3%
Alliant RED DOT²<<locked>>60%21,103 psi60%958 fps100%
Alliant Sport Pistol²<<locked>>60%26,658 psi76%1155 fps100%
Alliant UNIQUE²<<locked>>60%18,217 psi52%1007 fps98.7%
Baschieri & Pellagri 100²<<locked>>60%20,900 psi60%974 fps100%
Baschieri & Pellagri 102 Pistol²<<locked>>60%12,691 psi36%837 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>60%22,133 psi63%1020 fps100%
Hodgdon CFE Pistol²<<locked>>60%20,407 psi58%1014 fps100%
Hodgdon Clays²<<locked>>60%19,363 psi55%876 fps100%
Hodgdon HS-6²<<locked>>60%25,324 psi72%1155 fps96%
Hodgdon TrailBoss²<<locked>>60%6,744 psi19%614 fps99.6%
Hodgdon Universal²<<locked>>60%21,930 psi63%1040 fps100%
Lovex S011²<<locked>>60%27,166 psi78%1083 fps100%
Lovex S020²<<locked>>60%21,147 psi60%1043 fps100%
Maxam CSB 1²<<locked>>60%17,245 psi49%942 fps100%
Maxam CSB 2²<<locked>>60%18,420 psi53%981 fps100%
Maxam CSB 3²<<locked>>60%19,624 psi56%968 fps100%
Maxam CSB 4²<<locked>>60%21,263 psi61%981 fps100%
Maxam CSB 5²<<locked>>60%24,105 psi69%981 fps100%
Ramshot Silhouette²<<locked>>60%25,788 psi74%1145 fps99.8%
ReloadSwiss RS 12²<<locked>>60%23,917 psi68%1053 fps100%
ReloadSwiss RS 14²<<locked>>60%6,440 psi18%614 fps96.6%
ReloadSwiss RS 20²<<locked>>60%16,578 psi47%988 fps99.4%
Rottweil P 801²<<locked>>60%27,485 psi79%1070 fps100%
Rottweil P 806*²10.3 gr64%12,923 psi37%971 fps85.5%
SNPE Vectan A0²<<locked>>60%17,405 psi50%958 fps98.2%
SNPE Vectan A1²<<locked>>60%21,828 psi62%1014 fps100%
SNPE Vectan BA 9²<<locked>>60%21,016 psi60%1014 fps100%
SNPE Vectan BA10²<<locked>>60%26,136 psi75%974 fps100%
SNPE Vectan BA7 1/2*²7.1 gr60%14,634 psi42%915 fps88.6%
SNPE Vectan BA9 1/2²<<locked>>60%20,305 psi58%1007 fps100%
SNPE Vectan SP 2*²<<locked>>60%17,767 psi51%1060 fps87.3%
Somchem MP200²<<locked>>60%21,132 psi60%1056 fps99.1%
Somchem MS200²<<locked>>60%19,334 psi55%1007 fps99.6%
Somchem S221*²<<locked>>60%22,220 psi63%1115 fps86.1%
Vihtavuori 3N37*²<<locked>>60%16,157 psi46%978 fps91.8%
Vihtavuori 3N38*<<locked>>92%26,905 psi77%1217 fps87%
Vihtavuori N105*<<locked>>92%21,712 psi62%1171 fps87.2%
Vihtavuori N320²<<locked>>60%22,727 psi65%1014 fps100%
Vihtavuori N32C Tin Star²<<locked>>60%11,342 psi32%755 fps100%
Vihtavuori N330²<<locked>>60%20,958 psi60%1037 fps100%
Vihtavuori N340²<<locked>>60%18,507 psi53%997 fps99%
Vihtavuori N350*²<<locked>>60%14,069 psi40%925 fps89.8%
Winchester AutoComp ²<<locked>>60%17,898 psi51%971 fps100%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 9 powders for .400 Cor-Bon loaded with the .401 | 180gr | Geco FMJ FLAT NOSE. Rottweil P 806 delivers the highest muzzle velocity at 1,309 fps; across all powders the maximum-charge window runs from 840 fps to 1,309 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (241 MPa), the top charges use 38–90 %, leaving at least 10 % 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. Rottweil P 806, SNPE Vectan BA7 1/2, Alliant Herco rank at the top here: for .400 Cor-Bon with the .401 | 180gr | Geco FMJ FLAT NOSE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100 burn incompletely and react more sensitively to barrel length and temperature. ADI AP 100, Alliant Herco, Baschieri & Pellagri 102 Pistol 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.

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