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2. Firearm malfunction - Wikipedia

   en.wikipedia.org/wiki/Firearm_malfunction

   Rim lock is where the rim of the shell casing gets caught on the extractor groove of the casing underneath it. It is a common issue for calibers with large rims, such as 7.62×54mmR, or guns that have been rechambered for cartridges shorter than intended without replacing the original magazine with one that compensates for the shorter round.

3. Extractor (firearms) - Wikipedia

   en.wikipedia.org/wiki/Extractor_(firearms)

   The extractor moves with the bolt to pull the cartridge case rearwards out of the chamber, and at some point, the ejector eccentrically exerts a frontal push (from the case's frame of reference), which torques and "flicks" the case out of a side opening on the receiver known as the ejector port. Another example of extractor exists in the form ...

4. Forensic firearm examination - Wikipedia

   en.wikipedia.org/wiki/Forensic_firearm_examination

   In the 1990s, there were two databases that were formed for storage of pictures of shell casings and bullets in gun crimes. The first was the Drugfire system which was used by the FBI. The second, the IBIS (Integrated Ballistic Identification System) was created by Forensic Technology, Inc. and eventually bought by the Alcohol Tobacco and ...

5. Rim (firearms) - Wikipedia

   en.wikipedia.org/wiki/Rim_(firearms)

   Rimless cases are not well suited to break-open and revolver actions, though in break-action firearms they can be used with appropriate modifications, such as a spring-loaded extractor/ejector or, in a revolver, a half or full moon clip (for example, the Colt or Smith & Wesson M1917 revolvers in .45 ACP). [4]

6. Vacuum ejector - Wikipedia

   en.wikipedia.org/wiki/Vacuum_Ejector

   A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.

7. Lions, already decimated on defense, lose 2 cornerbacks to ...

   www.aol.com/sports/lions-already-decimated...

   The Detroit Lions' injury woes on defense continued Sunday, with the team losing two cornerbacks in the first half of their 48-42 loss to the Buffalo Bills.Carlton Davis III and Khalil Dorsey were ...

8. 5 killed, 200 injured in German Christmas market attack - AOL

   www.aol.com/germany-christmas-market-attack...

   At least five people, including a 9-year-old, are now known to have been killed in the vehicle-ramming attack on a Christmas market in the German city of Magdeburg on Friday, German officials said ...

9. Primary extraction - Wikipedia

   en.wikipedia.org/wiki/Primary_extraction

   The case is not chemically sticking as it still rotates with the bolt, gripped by the extractor claw on the rim. The mechanical sticking effect is a result from the case having expanded due to the high pressures during firing, and the extra initial force required can, depending on firearm design, make the extraction difficult for the user.