par gus31 » 29 Juin 2014 09:37
En allant plus loin dans mes recherches, je me suis intéressé au canon utilisé par GillesM, un Green Moutain calibre 40.
Sur le site du fabricant j'ai trouvé ça:
Disclaimer: Green Mountain muzzleloading barrels in .50, .54, and .58 calibers have been designed specifically for use with Black Powder FFg, Pyrodex 'RS', or Pyrodex 'Select' only. The .50 caliber Long Range Hunter 1:28" fast-twist barrels are designed to shoot heavy lead conicals or saboted bullets only and will not shoot a patched round ball. Use Blackpowder FFFg or Pyrodex P for .32, .36, .40 and .45 caliber round ball only. Do not use miracle lubes or bore seasoning agents on your rifle barrel. DO NOT USE SMOKELESS POWDER!!
[color=#FF0000]Exceeding maximum powder charge of 120 gr. Black Powder FFg by volume, or its equivalent, could result in extreme danger. Knight Rifles and Green Mountain Rifle Barrel Co. expressly disclaims any and all liability for the following: incidental or consequential damages due to the misuse or altering of these barrels and products; and mishandling (whether accidental or purposeful) of these barrels and products; exceeding the maximum load recommendations; or for rifles on which our products have been installed.[/color]
Si je comprends bien 120 gr de Pyrodex 70% moins lourd que notre PN donne environ 172 gr de PN soit 11 grammes de PN.
A vos calculettes...