| 摘要 |
<p>An ammunition cartridge (50) is disclosed comprising a projectile (54) threadably attached to a combustible case body (64) via a threaded combustible case adapter (62). At least one of the adapter (62) ends has a uniform density of polyurethane resin to provide strength and sufficient support for the threads. The conbustible case body (64) may also have a uniform resin density to support threads (70, 72) corresponding to those on the rear end of the adapter (62). The preferable uniform polyurethane density is about .75 grams per cubic centimeter.</p> |
