The principle of the Burney was an enlarged chamber that the gases expanded into and were then exhausted through the barrel using a type of high–low system. The Burney 7mm rifle, usually referred to as the Broadway Trust Rifle, may have been referred to as the Experimental Model EM-4.
The rifle was under trial in 1946-1947 but failed to show sufficient promise and was abandoned in March 1948.[4]
1. When loaded the barrel is held to the rear by the trigger sear, against the force of the barrel spring, with the round chambered and bolt locked.
Action of the rifle based upon UK patent 645751
2. When the trigger is pulled the sear is dropped and the barrel, bolt and magazine all run forward due to the barrel spring. Before reaching the fully forward position, the pivoted hammer hits a fixed cam and strikes the firing pin.
3. The forward momentum of the barrel and bolt group must first be arrested by the recoil, before they are accelerated to the rear. As the group recoils, a cam forces the bolt handle up, rotating the splined bolt head out of lock, which continues to the rear. A claw extractor and spring ejector remove the spent cartridge.
4. The bolt spring runs the bolt forward and chambers a round. The bolt head is relocked by a torsion spring between the bolt halves.
Referencesedit
^"Transitional Anti-Tank Rifle: The Carl Gustav M/42".
^Artillery: An Illustrated History of Its Impact By JEFF KINARD. Page 290.
^Williams, Anthony G. and Popenker, Maxim, Assault Rifle, 2004
^Edwards, Tony, The Cartridge Researcher, No.554, June 2011, and IAA issue 477, January/February 2011
Ferguson, Jonathan S. (2021). Thorneycroft to SA80: British Bullpup Firearms 1901–2020. Nashville, Tennessee: Headstamp Publishing. ISBN978-1-7334246-2-2.
External linksedit
Burney rifle
Burney ammunition
Burney ammunition
April 17, 2024
rifle, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, june, 2013, learn, w. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources EM 4 rifle news newspapers books scholar JSTOR June 2013 Learn how and when to remove this template message The EM 4 rifle Burney rifle was an experimental bullpup rifle of British origin designed by Sir Dennis Burney of the Broadway Trust Company 1 2 3 EM 4 rifleTypeSemi automatic riflePlace of originUnited KingdomProduction historyDesignerDennis BurneyDesigned1944ManufacturerBroadway Trust CompanySpecificationsCartridge 27 Broadway TrustCalibre0 27 in 6 9 mm Contents 1 Overview 2 Design 3 References 4 Bibliography 5 External linksOverview editThe principle of the Burney was an enlarged chamber that the gases expanded into and were then exhausted through the barrel using a type of high low system The Burney 7mm rifle usually referred to as the Broadway Trust Rifle may have been referred to as the Experimental Model EM 4 The rifle was under trial in 1946 1947 but failed to show sufficient promise and was abandoned in March 1948 4 Design editThe action is short recoil and is as follows 5 1 When loaded the barrel is held to the rear by the trigger sear against the force of the barrel spring with the round chambered and bolt locked nbsp Action of the rifle based upon UK patent 6457512 When the trigger is pulled the sear is dropped and the barrel bolt and magazine all run forward due to the barrel spring Before reaching the fully forward position the pivoted hammer hits a fixed cam and strikes the firing pin 3 The forward momentum of the barrel and bolt group must first be arrested by the recoil before they are accelerated to the rear As the group recoils a cam forces the bolt handle up rotating the splined bolt head out of lock which continues to the rear A claw extractor and spring ejector remove the spent cartridge 4 The bolt spring runs the bolt forward and chambers a round The bolt head is relocked by a torsion spring between the bolt halves References edit Transitional Anti Tank Rifle The Carl Gustav M 42 Artillery An Illustrated History of Its Impact By JEFF KINARD Page 290 Williams Anthony G and Popenker Maxim Assault Rifle 2004 Edwards Tony The Cartridge Researcher No 554 June 2011 and IAA issue 477 January February 2011 Military 20 January 2020 Bibliography editFerguson Jonathan S 2021 Thorneycroft to SA80 British Bullpup Firearms 1901 2020 Nashville Tennessee Headstamp Publishing ISBN 978 1 7334246 2 2 External links editBurney rifle Burney ammunition Burney ammunition Retrieved from https en wikipedia org w index php title EM 4 rifle amp oldid 1040174979, wikipedia, wiki, book, books, library,
