Revolver

Chewie a écrit:Attention, en ce qui concerne les munitions Black Hills, elles sont chargées avec de la poudre sans fumée

http://www.gunblast.com/RKCampbell_BlackHills.htm

Black Hills Cowboy loads are loaded with smokeless, not black, powder and burn clean with a minimum of powder ash. As many of you know, loading modern smokeless powder in the cavernous .45 Colt cartridge case can be a daunting proposition, with gas blow by (marked by smoky cases) common. Black Hills has put considerable research into their cowboy loads.

Cette compagnie propose donc des munitions PSF destinées à un usage "cowboy", après des recherches spécifiques sur le sujet. J'imagine qu'on ne peut les utiliser que dans des répliques neuves ou des armes vérifiées et en parfait état.

Le Pyrodex, lui, est un substitut de poudre noire qu'il faut impérativement utiliser comme de la poudre noire, sans laisser de vide dans la chambre :

All charges of Triple Seven or Pyrodex should be measured by VOLUME not weight. A simple, adjustable blackpowder measure is the correct tool for this job. All loads listed in this brochure are measured by VOLUME.

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Pyrodex is lighter in weight than blackpowder and weighs only about 70% as much as blackpowder. However, because Pyrodex yields more energy per pound than does blackpowder, the same volume of Pyrodex gives similar performance to blackpowder. Pyrodex loads given in this manual for muzzleloading guns are measured by volume, not weight.

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Pyrodex In Cartridges: The mechanics of reloading metallic cartridges are quite simple, but there is one requirement of the modern shooter that cannot be overlooked. The modern loader must set aside his knowledge of loading with smokeless powders and embrace the ways of years gone by. It must always be remembered that blackpowder and Pyrodex are very inefficient powders by today's standards. The methods described here are consistent with good loading practices for Pyrodex and should be followed without regard to smokeless loading practices.

Pyrodex works best in straight walled cases, but it will work satisfactorily in bottle necked cartridges as long as our warnings are observed.

WARNING: Never allow an air space in any cartridge loaded with Pyrodex. The loading density must be 100% by light compression.