Can Webley 455 MK11 ammo be used safely in a 450 Adams revolver.

caramel

caramel

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I am looking to buy an english revolver chambered in 450 Adam, can it safely shoot Fiocchi 455 MK11 ammo, there is many mixed informations on the net, anyone here got a practical experience of this situation. Thanks.
 
From ;http://www.cip-bobp.org/homologation/en/tdcc_public?page=5&cartridge_type_id=4

450 Short 1984-06-14 2000-06-07 United kingdom FR EN DE FR EN DE 8 720 828 936

455 MK II 1984-06-14 0000-00-00 United kingdom FR EN DE FR EN DE 7.5 900 1035 1170


PT max= maximum average pressure (bar) = 450 short; 720; For 455 Mk II = 900


PE= 1,30 Pmax = mean proof pressure (bar) = 450 short; 936; For 455 Mk II = 1170
 
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I've tried Fiocchi .455 ammo in my pristine Tranter .450 Army and considered it to be too warm for a gun of that era. This is a gun whose cylinder I've had magnafluxed just to be sure it was safe to fire. It passed with flying colours.
 
The Fiocchi 455 MKII's are not very hot loads. It says 850 FPS on the box but in my experience they usually measure ~700 FPS muzzle velocity on the chrono.

455 mk II rounds should chamber into the .450 adams, but the tolerances might be a little tight. I would personally use slightly lighter smokeless loads to be on the safe side seeing as they are blackpowder guns.
 
StandardIssue said:
The Fiocchi 455 MKII's are not very hot loads. It says 850 FPS on the box but in my experience they usually measure ~700 FPS muzzle velocity on the chrono.

455 mk II rounds should chamber into the .450 adams, but the tolerances might be a little tight. I would personally use slightly lighter smokeless loads to be on the safe side seeing as they are blackpowder guns.
Click to expand...


While the Fiocchi .455 ammunition may not be the hottest loadings, they can certainly turn many of the "Belgian bulldogs" into shattered-internal territory.

Just a hard-earned lesson, FWIW.
 
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