File Name: firearm blueing and browning .zip
Angier and Ned Schwing. The production of a dark colour on iron and steel objects, whether for ornamentation or other purposes, reaches far back in the history of metal working. One need only recall the century-old suits of armour, coloured by the action of heat alone, or combined with fats, ox gall, mixtures containing sulphur or antimony glance, or by pickling with acids or other rust-producing substances.
Could he arrange a meeting for later tonight. Rain would put a quick end to the dog show.
The cartridge itself has been made in many variants: multiple generations of regular ball , tracer , armor-piercing AP , incendiary , and saboted sub-caliber rounds. The rounds intended for machine guns are made into a continuous belt using metallic links. A wide variety of ammunition is available, and the availability of match grade ammunition has increased the usefulness of. John Browning had the idea for this round during World War I in response to a need for an anti-aircraft weapon, based on a scaled-up.
The development of the. According to the American Rifleman : "Actually, the Browning. American interest in an armor-piercing cartridge was influenced by the marginal French 11 mm design, prompting U. Army Ordnance officers to consult Browning.
They wanted a heavy projectile at feet per second f. Browning pondered the situation and, according to his son John, replied, 'Well, the cartridge sounds pretty good to start. You make up some cartridges and we'll do some shooting. The American Rifleman further explains that development was "[r]eputedly influenced by Germany's Subsequently, Frankford Arsenal took over from Winchester, producing the historic.
The Army then returned to John Browning for the actual gun. Teamed with Colt, he produced prototypes ready for testing and, ironically, completed them by Nov. The round was put into use in the M Browning machine gun. This gun was later developed into the M2HB Browning which with its. The concept of a. During World War II the. Since the mids, some armored personnel carriers and utility vehicles have been made to withstand It still has more penetrating power than lighter weapons such as general-purpose machine guns , though it is significantly heavier and more cumbersome to transport.
Its range and accuracy, however, are superior to light machine guns when fixed on tripods, and it has not been replaced as the standard caliber for Western vehicle-mounted machine guns Soviet and CIS armored vehicles mount Decades later, the. The long range over one mile between firing position and target allows time for the sniper to avoid enemy retaliation by either changing positions repeatedly, or by safely retreating. A common method for understanding the actual power of a cartridge is comparison of muzzle energies.
Due to the high ballistic coefficient of the bullet, the. The round is a scaled-up version of the. The primer type specified for this ammunition is a boxer primer that has a single centralized ignition point US and NATO countries. The average chamber pressure in this round as listed in TM,  the U. Two distinct and non-compatible metallic links have been used for the. The Mseries "push-through" links were used in the M85 machine gun. The specified maximum diameter of an unfired.
National Firearms Act , the barrel of a. The oversized bullet is formed to the bore size upon firing, forming a tight seal and engaging the rifling, a mechanism which in firearm terms is known as swaging. Subject to political controversy due to the great power of the cartridge it is the most powerful commonly available cartridge not considered a destructive device under the National Firearms Act , it remains popular among long-range shooters for its accuracy and external ballistics.
While the. In response to legal action against the. The new round has almost identical ballistics , but because of the different dimensions, rifles chambered for. Barrett offers a similar alternative, the. The briefing did not identify any instance of a. In the United States, Washington, D.
Within the United Kingdom, it is legal to own a bolt action. Contrary to a persistent misconception within the United States Armed Forces , using. This limitation was entirely tactical in nature and was intended to hide the vulnerable M40 and its crew from the enemy until the main anti-tank gun was ready for firing; however, Parks concludes that some U.
This ban includes firearms that chamber the. The ban includes a two-year amnesty period before the firearms must be surrendered, with an as-yet-unannounced compensation program in the works. The primary military use of this round is in the Browning M2HB heavy machine gun and the Barrett M82 anti-material rifle.
The U. Coast Guard uses. If it is necessary to breach barriers, a. This weapon was used by other snipers, and eventually purpose-built sniper rifles were developed specifically for this round. In addition to long-range and anti-materiel sniping, the U. It can disable most unarmored and lightly armored vehicles. Some civilians use. From Wikipedia, the free encyclopedia. Rifle cartridge designed by John Moses Browning. From left:. This section needs additional citations for verification.
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Skyhorse Publishing Company, Incorporated. US Marine Corps. Headquarters Department of the Army. The Complete. Boulder, Colorado: Paladin Press. Defense Technical Information Center. April Archived PDF from the original on December 2, Retrieved August 27, Archived from the original on August 6, Retrieved July 28, Archived PDF from the original on August 24, Archived from the original PDF on July 19, Archived from the original on April 22, Retrieved April 11, April 29, Archived from the original on September 12, April 27, Archived from the original on October 4, Retrieved September 29, Archived PDF from the original on December 23, Retrieved September 14, War Department".
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Download Firearm Blueing and Browning free book PDF Author: R.H. Angier Pages: 2. ISBN: Format: Epub, PDF File size: Mb.
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Bluing is a passivation process in which steel is partially protected against rust, and is named after the blue-black appearance of the resulting protective finish. True gun bluing is an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the surface selectively forming magnetite Fe 3 O 4 , the black oxide of iron. Black oxide provides minimal protection against corrosion, unless also treated with a water-displacing oil to reduce wetting and galvanic action. A distinction can be made between traditional bluing and some other more modern black oxide coatings, although bluing is a subset of black oxide coatings.
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The cartridge itself has been made in many variants: multiple generations of regular ball , tracer , armor-piercing AP , incendiary , and saboted sub-caliber rounds.