| 摘要 |
A muzzle loader firearm having a primer cavity that is sized to have an interference fit with a desired primer, to be received therein, so that an outwardly facing surface of the exterior casing of the primer, upon being discharged, expands and forms a fluid tight seal with an interior surface of the primer cavity to prevent the escape of any significant gases therebetween. The firearm is provided with a small head space which only allows minor rearward movement of the primer, upon being discharged within the primer cavity, to maintain an adequate fluid tight seal, formed between the outwardly facing surface of the primer casing with the inwardly facing surface of the primer cavity. To facilitate an increased temperature of the primer charge, upon being discharged, the primer cavity communicates with the ignition bore via an oxygen recess that is sized to accommodate a desired quantity of oxygen to facilitate a more rapid and hotter burning of the primer charge. The hotter burning primer charge, in turn, causes a more rapid and complete burning of the gun powder, and especially smokeless gun powder, loaded within the breech end of the gun barrel.
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