Load data for .405 Win. + .416 | 400gr | A-Square LionLoad

.405 Win. cartridge drawing
A-Square logo

Load Specifications

Bullet Manufacturer:A-Square
Bullet Weight:400 gr
Bullet Diameter:0.416"
Bullet Length:<<locked>>
Case Length (l3):2.58"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:78 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:46,000 psi

Load data in caliber .405 Win. with .416 | 400gr | A-Square LionLoad bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and Bofors RP3.

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 ≥ 80% and propellant combustion ≥ 95%. 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: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>86%39,900 psi87%1906 fps100%
Accurate 2460<<locked>>84%40,408 psi88%1942 fps99.4%
Accurate 2495<<locked>>94%40,292 psi88%1972 fps100%
Accurate 2520<<locked>>88%40,422 psi88%1978 fps99.2%
Accurate 4064<<locked>>96%40,118 psi87%1995 fps99.8%
ADI AR 2206H<<locked>>90%41,263 psi90%1978 fps96.8%
ADI Benchmark 8208<<locked>>88%41,278 psi90%1955 fps98%
Alliant AR-Comp<<locked>>90%41,582 psi90%1991 fps100%
Alliant Power Pro 1200-R<<locked>>84%41,539 psi90%2021 fps97.7%
Alliant Reloder- TS 15.5<<locked>>96%40,132 psi87%1988 fps97.6%
Alliant Reloder-10x<<locked>>82%40,495 psi88%1916 fps100%
Alliant Reloder-15<<locked>>94%41,176 psi90%1998 fps96.2%
Alliant Reloder-17ᴾ<<locked>>100%40,567 psi88%2044 fps96.6%
Bofors RP3<<locked>>96%39,349 psi86%1991 fps97.5%
Hodgdon Benchmark<<locked>>86%41,466 psi90%1919 fps98.5%
Hodgdon BL-C2<<locked>>90%41,104 psi89%2008 fps98.6%
Hodgdon H322<<locked>>84%41,336 psi90%1965 fps99.9%
Hodgdon H335<<locked>>82%39,276 psi85%1946 fps99.4%
Hodgdon H4895<<locked>>90%41,495 psi90%1988 fps97.5%
Hodgdon LEVERevolution<<locked>>92%39,465 psi86%1998 fps97.3%
Hodgdon TrailBossᴾ<<locked>>100%33,460 psi73%1207 fps100%
Hodgdon VARGET<<locked>>90%40,466 psi88%1955 fps97.1%
IMR 3031<<locked>>90%39,711 psi86%1991 fps100%
IMR 4064<<locked>>94%41,582 psi90%1959 fps96.3%
IMR 4895<<locked>>92%39,682 psi86%1988 fps96.6%
IMR 8208 XBR<<locked>>88%41,278 psi90%1955 fps98%
Lovex D073.5<<locked>>84%40,161 psi87%1942 fps98.6%
Lovex D073.6<<locked>>92%41,365 psi90%2001 fps99.3%
Lovex S060<<locked>>88%40,480 psi88%1903 fps96.5%
Lovex S062<<locked>>94%40,770 psi89%1965 fps98%
Norma 201<<locked>>90%40,451 psi88%1946 fps97.9%
Norma 202<<locked>>90%40,306 psi88%1959 fps99.5%
Norma 203B<<locked>>94%40,350 psi88%1991 fps96.7%
Ramshot Big Game<<locked>>94%40,698 psi88%2005 fps96.2%
Ramshot Wild Boar<<locked>>88%39,987 psi87%1969 fps96.4%
Ramshot X-Terminator<<locked>>84%39,813 psi87%1916 fps96.1%
ReloadSwiss RS 14ᴾ<<locked>>100%33,605 psi73%1240 fps100%
ReloadSwiss RS 40<<locked>>84%41,017 psi89%1949 fps99%
ReloadSwiss RS 52<<locked>>92%40,248 psi87%2034 fps95.9%
ReloadSwiss RS 60<<locked>>98%40,785 psi89%2057 fps99%
Rottweil R 901<<locked>>86%39,668 psi86%1916 fps99.3%
Rottweil R 902<<locked>>92%40,727 psi89%1942 fps97.9%
Rottweil R 903<<locked>>98%39,088 psi85%1978 fps97.1%
Shooters World Match Rifle<<locked>>92%41,365 psi90%2001 fps99.3%
Shooters World Precision<<locked>>94%40,770 psi89%1965 fps98%
Shooters World Tactical Rifle<<locked>>82%40,930 psi89%1919 fps97.5%
SNPE Vectan SP 11<<locked>>96%39,291 psi85%1988 fps95.9%
SNPE Vectan SP 3<<locked>>82%41,133 psi89%1923 fps100%
SNPE Vectan SP 9<<locked>>90%39,711 psi86%1955 fps96.3%
SNPE Vectan Tubal 3000<<locked>>88%40,480 psi88%1886 fps99.4%
SNPE Vectan Tubal 5000<<locked>>94%39,276 psi85%1886 fps99.8%
Somchem S321<<locked>>86%41,263 psi90%1978 fps98.3%
Somchem S335<<locked>>88%39,566 psi86%1893 fps99.7%
Somchem S341<<locked>>90%41,133 psi89%1969 fps96.5%
Somchem S355<<locked>>98%40,654 psi88%1988 fps97.2%
Vihtavuori N130<<locked>>84%40,727 psi89%1880 fps100%
Vihtavuori N133<<locked>>88%40,176 psi87%1890 fps100%
Vihtavuori N135<<locked>>94%41,292 psi90%1972 fps100%
Vihtavuori N140<<locked>>92%40,495 psi88%1946 fps99.7%
Vihtavuori N150<<locked>>98%39,015 psi85%1942 fps98%
Vihtavuori N530<<locked>>88%41,162 psi89%1952 fps98%
Vihtavuori N540<<locked>>94%41,379 psi90%1975 fps99.6%
Winchester 6.5 StaBALLᴾ<<locked>>100%38,812 psi84%1926 fps95.9%
Winchester 748<<locked>>88%39,639 psi86%1985 fps98.5%
Winchester StaBALL Match<<locked>>92%41,408 psi90%1998 fps97.4%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%33,170 psi72%1804 fps99.8%
Accurate 2460<<locked>>80%35,404 psi77%1867 fps98.6%
Accurate 2495<<locked>>80%25,614 psi56%1726 fps98.9%
Accurate 2520<<locked>>80%30,922 psi67%1824 fps97.2%
Accurate 4064<<locked>>80%24,308 psi53%1706 fps95.9%
ADI AR 2206H<<locked>>86%36,521 psi79%1903 fps95.5%
ADI Benchmark 8208<<locked>>80%32,256 psi70%1804 fps95.5%
Alliant AR-Comp<<locked>>80%30,356 psi66%1821 fps100%
Alliant Power Pro 1200-R<<locked>>80%36,463 psi79%1939 fps96.4%
Alliant Reloder- TS 15.5<<locked>>90%33,417 psi73%1877 fps95.7%
Alliant Reloder-10x<<locked>>80%38,014 psi83%1880 fps100%
Alliant Reloder-15<<locked>>92%38,856 psi84%1962 fps95.6%
Alliant Reloder-17<<locked>>98%38,130 psi83%2001 fps95.8%
Bofors RP352.4 gr90%32,285 psi70%1873 fps95.4%
Hodgdon Benchmark<<locked>>80%34,708 psi75%1811 fps96.9%
Hodgdon BL-C2<<locked>>80%29,515 psi64%1808 fps95.3%
Hodgdon H322<<locked>>80%36,318 psi79%1890 fps99.5%
Hodgdon H335<<locked>>80%36,593 psi80%1903 fps99%
Hodgdon H4895<<locked>>84%34,534 psi75%1873 fps95.5%
Hodgdon LEVERevolution51.7 gr86%32,721 psi71%1877 fps95.1%
Hodgdon TrailBoss<<locked>>80%24,714 psi54%1076 fps100%
Hodgdon VARGET<<locked>>84%33,591 psi73%1841 fps95%
IMR 3031<<locked>>80%28,950 psi63%1804 fps98.8%
IMR 4064<<locked>>92%39,175 psi85%1923 fps95.6%
IMR 4895<<locked>>88%34,998 psi76%1909 fps95.2%
IMR 8208 XBR<<locked>>80%32,256 psi70%1804 fps95.5%
Lovex D073.5<<locked>>80%35,027 psi76%1864 fps97.5%
Lovex D073.6<<locked>>80%27,760 psi60%1772 fps96%
Lovex S060<<locked>>84%36,071 psi78%1831 fps95.2%
Lovex S062<<locked>>86%31,937 psi69%1821 fps95.6%
Norma 201<<locked>>82%31,705 psi69%1798 fps95.5%
Norma 202<<locked>>80%29,443 psi64%1775 fps97.3%
Norma 203B<<locked>>90%35,636 psi77%1913 fps95.3%
Ramshot Big Game<<locked>>92%38,043 psi83%1962 fps95.4%
Ramshot Wild Boar<<locked>>86%37,347 psi81%1926 fps95.6%
Ramshot X-Terminator<<locked>>82%37,376 psi81%1877 fps95.4%
ReloadSwiss RS 14<<locked>>80%24,772 psi54%1102 fps100%
ReloadSwiss RS 40<<locked>>80%36,230 psi79%1873 fps98.1%
ReloadSwiss RS 52<<locked>>90%37,695 psi82%1991 fps95.1%
ReloadSwiss RS 6053.2 gr88%29,892 psi65%1844 fps95.1%
Rottweil R 901<<locked>>80%33,243 psi72%1808 fps98.1%
Rottweil R 902<<locked>>84%31,952 psi69%1798 fps95.5%
Rottweil R 903<<locked>>92%32,242 psi70%1867 fps95%
Shooters World Match Rifle<<locked>>80%27,760 psi60%1772 fps96%
Shooters World Precision<<locked>>86%31,937 psi69%1821 fps95.6%
Shooters World Tactical Rifle<<locked>>80%38,348 psi83%1880 fps96.9%
SNPE Vectan SP 11<<locked>>94%36,898 psi80%1949 fps95.1%
SNPE Vectan SP 3<<locked>>80%38,595 psi84%1886 fps100%
SNPE Vectan SP 9<<locked>>88%37,289 psi81%1916 fps95.6%
SNPE Vectan Tubal 3000<<locked>>80%31,836 psi69%1749 fps97.9%
SNPE Vectan Tubal 5000<<locked>>80%25,788 psi56%1650 fps96.9%
Somchem S321<<locked>>80%33,881 psi74%1860 fps96.5%
Somchem S335<<locked>>80%31,125 psi68%1755 fps98.4%
Somchem S341<<locked>>86%36,042 psi78%1890 fps95%
Somchem S355<<locked>>92%33,808 psi73%1877 fps95.2%
Vihtavuori N130<<locked>>80%36,274 psi79%1818 fps100%
Vihtavuori N133<<locked>>80%31,647 psi69%1759 fps99.6%
Vihtavuori N135<<locked>>80%26,716 psi58%1732 fps99%
Vihtavuori N140<<locked>>80%27,949 psi61%1732 fps97.1%
Vihtavuori N150<<locked>>90%30,472 psi66%1798 fps95.5%
Vihtavuori N530<<locked>>80%31,879 psi69%1798 fps95.5%
Vihtavuori N540<<locked>>80%26,731 psi58%1719 fps96%
Winchester 6.5 StaBALL<<locked>>98%36,289 psi79%1886 fps95%
Winchester 748<<locked>>80%30,501 psi66%1821 fps95.9%
Winchester StaBALL Match<<locked>>86%34,040 psi74%1880 fps95.3%

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

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 85 powders for .405 Win. loaded with the .416 | 400gr | A-Square LionLoad. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,057 fps; across all powders the maximum-charge window runs from 1,207 fps to 2,057 fps. Accurate 4350 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (317 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. ReloadSwiss RS 60, Hodgdon LEVERevolution, Bofors RP3 rank at the top here: for .405 Win. with the .416 | 400gr | A-Square LionLoad they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, Alliant Power Pro 2000-MR, Alliant Reloder-16 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 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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