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Drawing boards changed as a result of technical pens—a hard (not spongy) surface was required, and when plastic film was used, the static attraction between plastic cursors, T-squares, set-squares etc. meant that as one lifted the edge from the film, the film would rise through static attraction and the ink would blot.
Spent cartridges found at a scene can be examined for physical evidence such as fingerprints or compared to samples that match them to a weapon. The examination of the cartridge relies on the unique tool marks left by the various parts of the weapon including the firing pin and the ejector in semi and fully automatic firearms. These markings ...
The delta L problem (ΔL problem) refers to certain firearm chambers and the incompatibility of some ammunition made for that chamber. ΔL is a Commission Internationale Permanente (C.I.P.) geometric dimensioning and tolerancing definition for cartridge cases that are longer than the chamber they have to fit in. "Delta L" essentially means "difference in length".
All smokeless powders are somewhat difficult to ignite in a gun, so that in order to prevent hang-fires every cartridge has a primer or igniter, of ordinary fine grain gunpowder, placed so as to intercept the flash from the tube; the outside of the bag containing this igniter is made of shalloon, to allow the flash to penetrate with ease. The ...
Paper cartridges varied in their construction based on the specifications of the buyer or the practices of the builder; a cartridge tended to be built with a specific weapon in mind, with a specified powder charge and a correctly sized ball or bullet. A cartridge built for a .65 caliber musket obviously could not be used in a .50 caliber weapon.
This article was originally published on Weedmaps News in May 2019 before it was updated on August 26, 2019 in the midst of an outbreak of lung illnesses associated with e-cigarette and illicit ...
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Pages in category "Rimmed cartridges" The following 117 pages are in this category, out of 117 total. This list may not reflect ... 5-in-1 blank cartridge; 5.6×57mmR ...