flash hole造句

• In Berdan cases, the flash holes are located to the sides of the anvil.
• Next the rims, extractor grooves, and flash holes are cut into the case.
• However, some other countries produce the ammunition with Berdan primers that have two flash holes.
• Berden primed cartridges also have a double flash hole, making their removal difficult because the standard decapping die only has a single decapping pin.
• Flash hole uniforming tools are used to remove any burrs, which are residual brass remaining from the manufacturing punching operation used in creating flash holes.
• Flash hole uniforming tools are used to remove any burrs, which are residual brass remaining from the manufacturing punching operation used in creating flash holes.
• Factory ammunition was produced by the Super Cartridge Company, Riverbrand, IMI and Sportco, some using new Berdan primed cases ( double flash hole cartridge and primer has no anvil ).
• The principle at work in the short magnum cartridge is the advantage of fitting larger volumes of powder in closer proximity to the primer's flash hole, resulting in more uniform, consistent ignition.
• This positioning makes little or no difference to the performance of the round, but it makes fired primers vastly easier to remove for re-loading, as a single, centered rod pushed through the flash hole from the open end of the case will eject the two-piece primer from the primer cup.
• Pulling the trigger allows the hammer or striker to fly forward, striking the " firing pin, " which then strikes the " primer, " igniting an impact-sensitive chemical compound ( historically, first fulminate of mercury, then potassium chlorate, now lead styphnate ) which shoots a flame through the " flash hole " into the cartridge's propellant chamber, igniting the propellant.