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2. Headspace (firearms) - Wikipedia

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

   Headspace positioning of rimless, rimmed, belted and straight cartridges Several different rimmed, .22 rimfire cartridges, which have a uniform forward diameter, and which have headspace on the rim, allowing any length of cartridge shorter than the maximum size to be used in the same firearm Firearms chambered for tapered rimmed cartridges like this .303 British cannot safely fire shorter ...

3. 5.56×45mm NATO - Wikipedia

   en.wikipedia.org/wiki/5.56×45mm_NATO

   It appears that this round can drastically improve the performance of any AR-15 weapon chambered to .223/5.56 mm. Superior accuracy, wounding capacity, stopping power and range have made this the preferred round of many special forces operators, and highly desirable as a replacement for the older, Belgian-designed 5.56×45mm SS109/M855 NATO round.

4. Go/no-go gauge - Wikipedia

   en.wikipedia.org/wiki/Go/no-go_gauge

   Go/no-go gauges play an integral part in setting the correct headspace during gunsmithing. In order for the chamber to be in-spec, the bolt must close without resistance on the go gauge, but it must not close completely on the no-go gauge. In addition, there is usually a third gauge called FIELD that is slightly larger than the no-go gauge.

5. M2 Browning - Wikipedia

   en.wikipedia.org/wiki/M2_Browning

   The solution to these problems was adjustable timing and headspace ("Timing" is the adjustment of the gun so that firing takes place when the recoiling parts are in the correct position for firing; "headspace" is the distance between the face of the bolt and the base of the cartridge case, fully seated in the chamber); the operator had to screw ...

6. Trump tariffs are already causing this 1 unfortunate consequence

   www.aol.com/finance/trump-tariffs-already...

   President Donald Trump speaks to reporters after landing at Palm Beach International Airport in West Palm Beach, Fla., Sunday, Feb. 16, 2025, after attending the NASCAR Daytona 500 auto race.

7. US aircraft carrier collides with ship in Mediterranean Sea

   www.aol.com/aircraft-carrier-harry-truman...

   The aircraft carrier USS Harry S. Truman collided with a large merchant vessel Wednesday night in the vicinity of Port Said, Egypt, in the Mediterranean Sea. "The Nimitz-class aircraft carrier USS ...

8. Animal owners worry about pet welfare after microchip company ...

   www.aol.com/news/animal-owners-worry-pets...

   Pet microchips help reunite lost animals with their owners. A Texas company suddenly closed, leaving pet owners worried about their pet's welfare.

9. 7.62×51mm NATO - Wikipedia

   en.wikipedia.org/wiki/7.62×51mm_NATO

   The chamber of the former has a marginally shorter headspace and thinner case walls than the latter due to changed specifications between 1952 and 1954. This allows 7.62×51mm NATO ammunition to feed reliably in rifles chambered for .308 Winchester, but can cause .308 Winchester ammunition cases to rupture when fired in rifles chambered for 7. ...