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2. 7.65×20mm Long - Wikipedia

   en.wikipedia.org/wiki/7.65×20mm_Long

   The US .30 Pedersen cartridge (auto pistol ball cartridge caliber .30 Model of 1918 or .30-18 Automatic) used in the Pedersen device was the basis for the 7.65×20mm Long. The cartridge dimensions were identical, although Pedersen device cartridges were loaded with a slightly heavier 80 grains (5.2 g) bullet which achieved a velocity of 1,300 ...

3. Pistol slide - Wikipedia

   en.wikipedia.org/wiki/Pistol_Slide

   The slide on the majority of fully/semi-automatic pistols is the upper part that reciprocates ("slides") with recoil during the gun's operating cycle. It serves as the bolt carrier group (BCG) and partly as the receiver , and generally houses the firing pin / striker , the extractor and frequently also the barrel , and provides a mounting ...

4. Headspace (firearms) - Wikipedia

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

   A pistol cartridge which headspaces off the case mouth, e.g. .45 ACP. In firearms, headspace is the distance measured from a closed chamber's breech face to the chamber feature that limits the insertion depth of a cartridge placed in it. Used as a verb by firearms designers, headspacing refers to the act of stopping deeper cartridge insertion.

5. ‘Truck Stop Serial Killer’ Convicted of Third Death amid ...

   www.aol.com/lifestyle/truck-stop-serial-killer...

   A man dubbed the “Truck Stop Serial Killer” has been convicted of a third murder. On Wednesday, Jan. 22, Bruce Mendenhall, 73 — who is already serving two life sentences for the murder of ...

6. Case-hardening - Wikipedia

   en.wikipedia.org/wiki/Case-hardening

   Case colouring refers to this pattern and is commonly encountered as a decorative finish on firearms. Case-hardened steel combines extreme hardness and extreme toughness, which is not readily matched by homogeneous alloys since hard homogeneous steels tend to be brittle, especially those steels whose hardness relies on carbon content alone.

7. Cartridge (firearms) - Wikipedia

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

   The head of a brass case can be work-hardened to withstand the high pressures, and allow for manipulation via extraction and ejection without rupturing. The neck and body portion of a brass case is easily annealed to make the case ductile enough to allow reshaping so that it can be handloaded many times, and fire forming can help accurize the ...