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A slamfire is a premature, unintended discharge of a firearm that occurs as a round is being loaded into the chamber, when the bolt "slams" forward (hence the name), as a result of the firing pin having not been retracted into the bolt, or from the firing pin being carried forward by the momentum of returning to battery. Similar to a hammer ...
Browning Arms Company (originally John Moses and Matthew Sandefur Browning Company) is an American marketer of firearms and fishing gear. The company was founded in Ogden, Utah , in 1878 by brothers John Moses Browning (1855–1926) and Matthew Sandefur Browning (1859–1923).
Straight-pull rifles differ from conventional bolt-action mechanisms in that the manipulation required from the user in order to chamber and extract a cartridge predominantly consists of a linear motion only, as opposed to a traditional turn-bolt action where the user has to manually rotate the bolt for chambering and primary extraction.
If the barrel, receiver and bolt are not fitted properly, severe and potential fatal problems can arise due to faulty headspace, e.g. cartridge overpressure and case rupture. Threaded barrels are often mounted to the receiver with a lot of torque, and will therefore generally require tools for assembly and disassembly, such as a suitable action ...
Examples of bolt-action or lever-action rifles that are chambered for (or have variants chambered for) .17 HMR include Armscor M1700, Browning T-Bolt, CZ 452, Henry Golden Boy, [9] Ruger Model 96, Sako Quad, Savage 93, Steyr Zephyr II, Marlin 917 and Weihrauch 60J.
The Winchester made Model 70 in .223 WSSM has not been revived in the new Browning-made Winchester Model 70s, but Browning has chosen to use chrome-lined barrels on all of its guns chambered for .223 WSSM and has introduced the .223 WSSM cartridge as a chambering in its A-bolt rifles. Browning rejects the charge that the .223 WSSM round is ...
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Bolt-action rifles utilize a rotating camming action as a mechanical advantage to aid primary extraction, followed by a linear motion in the secondary extraction. Disassembled bolt of the Heym SR 30. In breechloading firearms, primary extraction is the initial phase (the first few millimeters) of the extraction of a spent casing from the ...