DESCRIPTION. 0.63 inch, diameter at lip. 0.50 inch, diameter of body. 0.56 inch, length of body. 0.25 inch, threaded length. 0.09 inch tickness of lip. Number of threads, 5 RH.

CONSTRUCTION. A brass cap is positioned under the anvil in the base of the primer. The cap contains:

The composition is sealed by a covering of varnish without the addition of a foil disk.

The anvil, which is screwed into the primer, has a flash channel through its center.

The upper recress of the primer houses 8.7 grains of black powder. The top of the primer is sealed by a brass washer and a plastic disk.

ACTION. The cap is forced against the anvil by the firing pin. The resulting flash passes through the anvil firing black powder and this, in turn, fires the propelling charge.

EMPLOYMENT. German Percussion Primer used on Q.F. Cartridges. (See fig. 321.)

DESCRIPTION: 0.63 inch, diameter at lip. 0.50 inch, diameter of body. 0.56 inch, length of body. 0.25 inch, threaded length. 0.09 inch tickness of lip. Number of threads, 5 RH.

CONSTRUCTION. A brass cap is positioned under the anvil in the base of the primer. The cap contains:

The composition is sealed by a covering of varnish without the addition of a foil disk.

The anvil, which is screwed into the primer, has a flash channel through its center.

The upper recress of the primer houses 8.7 grains of black powder. The top of the primer is sealed by a brass washer and a plastic disk.

ACTION. The cap is forced against the anvil by the firing pin. The resulting flash passes through the anvil firing black powder and this, in turn, fires the propelling charge.

Figure 321 – Percussion Primers C/13 nA and C/33