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Per wikipedia which most of us are aware of: Quote: And ... Quote: I have no doubt it out performed the .405 Winchester. Of course too fragile projectiles were accused as the main reason for the cartridge failing historically. Wikipedia records the following velocities, Ballistic performance Bullet mass/type Velocity Energy 347 gr (22 g) SP 2,200 ft/s (670 m/s) 3,830 ft⋅lbf (5,190 J) 347 gr (22 g) SP 2,230 ft/s (680 m/s) 3,870 ft⋅lbf (5,250 J) 347 gr (22 g) SP 2,250 ft/s (690 m/s) 3,900 ft⋅lbf (5,300 J) Source: Cartridges of the World.[1] So a 347 gr projectile cat 2,200 to 2,250 fps. I wonder if these are "old" velocities? Similar to the .404 being quoted as 2,100 to 2,170 fps with a 400 gr? If modern powders can safely push a 347 gr faster, what could they do with a 400 gr? If it could drive a 400 gr at between 2,000 fps and 2,200 fps with modern powders, it performs very similar to .408/.411 .450/400 NE rifles, And those while lower powered have been much used double rifle cartridges for all sorts of game. |