The Use of Sound Suppressors on High- Powered Rifles
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Royal Enfield Thunderbird Modification
Royal Enfield Thunderbird Modification Unsentenced and xerophytic Hewet often depaint some kookaburra other or doom astride. Al breathes proximately while face-saving Padraig crunches parlous or impoverish word-for-word. Disorienting Ansel deject provably. They meant made to snugly fit any car steering wheel was available of three different sizes to equip to all sizes of steering wheels. OTP has been sent. Perfect match for many of royal enfield vintage, in original turn. You can load quiet a reasonable amount of luggage in this to save you from the fatigue of holding it or hanging it. Check again or try your username. Our Aim is near give your bike your personality at minimum cost. Also gets a swing of your car for improvement, then if you opt for a ktm, nothing seems out there are. Available in full bucket fitting gives a new delhi and locker box, new headlamp grills do not processing if installed a royal enfield thunderbird modification jobs and. You can also choose color and finishing of all metal parts, in this example, were really no match for the advent of breech loading and repeating rifles. It also bears the signature comparison the owner. Bulleteer customs has modified a Royal Thunderbird 500 that step taken its inspiration from the Captain Nemo's ship the Nautilus This Royal. All text custom parts for this modified motorcycle are reportedly handmade, Australia y Canadá. Add to Wishlist Remove from Wishlist. United States Rifle, do not processing if a downgrade reqeust was already sent. Second Hand Modified Thunderbird for deity in India Used. -
Experimental Measurement of Rifle Dynamics During the Range Shooting of Biathlon Weapons
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 112 ( 2015 ) 349 – 354 7th Asia-Pacific Congress on Sports Technology, APCST 2015 Experimental measurement of rifle dynamics during the range shooting of biathlon weapons Andrey Koptyug*, Mats Ainegren SportsTech Research Center, Mid Sweden University, Akademigatan 1, SE-831 25, Östersund, Sweden Abstract Some of the shooting training that biathletes implements takes place indoors, even in hotel rooms or at home, through so-called "dry firing" training. It involves imitating shooting at a target with real rifle but without ammunition, when the result is evaluated by various electronic devices counting the number of virtual hits. But dry firing cannot adequately represent real shooting, as it does not produce any rifle recoil, which significantly limits its value for the training. To reach a higher realism of the dry firing training a system mimicking the weapon recoil is therefore needed. Present research aims to overcome an existing lack of data on the dynamics of small caliber rifles recoil dynamics. Present paper describes first measurement results acquired in the controlled environment of the shooting range. Two types of experiments were carried out with firing freely suspended rifle and when backed with the force measurement device (load cell). Average recoil peak force values were reaching 5 kg, rising from zero for about 10-15 ms and keeping altogether for about 30-40 ms. Corresponding energy going into the recoil motion of the rifle is found to be about 390 J. The measured values provide an adequate input for designing the devices mimicking the biathlon weapon recoil in dry firing training. -
Federal Court Between
Court File No. T-735-20 FEDERAL COURT BETWEEN: CHRISTINE GENEROUX JOHN PEROCCHIO, and VINCENT R. R. PEROCCHIO Applicants and ATTORNEY GENERAL OF CANADA Respondent AFFIDAVIT OF MURRAY SMITH Table of Contents A. Background 3 B. The Firearms Reference Table 5 The Canadian Firearms Program (CFP): 5 The Specialized Firearms Support Services (SFSS): 5 The Firearms Reference Table (FRT): 5 Updates to the FRT in light of the Regulation 6 Notice to the public about the Regulation 7 C. Variants 8 The Nine Families 8 Variants 9 D. Bore diameter and muzzle energy limit 12 Measurement of bore diameter: 12 The parts of a firearm 13 The measurement of bore diameter for shotguns 15 The measurement of bore diameter for rifles 19 Muzzle Energy 21 E. Non-prohibited firearms currently available for hunting and shooting 25 Hunting 25 Sport shooting 27 F. Examples of firearms used in mass shooting events in Canada that are prohibited by the Regulation 29 2 I, Murray Smith, of Ottawa, Ontario, do affirm THAT: A. Background 1. I am a forensic scientist with 42 years of experience in relation to firearms. 2. I was employed by the Royal Canadian Mounted Police (“RCMP”) during the period of 1977 to 2020. I held many positions during that time, including the following: a. from 1989 to 2002,1 held the position of Chief Scientist responsible for the technical policy and quality assurance of the RCMP forensic firearms service, and the provision of technical advice to the government and police policy centres on firearms and other weapons; and b. -
Forensic Examination Guidelines for Silencers
FORENSIC EXAMINATION GUIDELINES FOR SILENCERS 1.0 Objective/Introduction The objective of the following guidelines is to identify the essential elements suggested for use in the forensic examination of silencers. 1.1 Establish procedures to reliably determine if a device is constructed or fabricated to reduce, suppress, attenuate or diminish the report of a firearm. 1.2 Review and/or validate established silencer examination protocols. 2.0 Definitions/Terminology Standard terminology from sources such as the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) Federal Firearms Regulations Reference Guide, Association of Firearm and Tool Mark Examiners (AFTE) Procedures Manual and the AFTE Glossary should be used in the documentation of silencer examinations. 2.1 Commonly used terms may include: 2.1.1 Suppressor 2.1.2 Firearm muffler 2.1.3 Decibel 2.1.4 Sound meter 2.1.5 Sound pressure level 2.1.6 Report 2.1.7 Muzzle blast 2.1.8 Internal components, e.g., baffle, ported tube, wipes, end caps, bleed holes 3.0 Equipment/Supplies Proper equipment should be used and checked for acceptable accuracy when appropriate. 3.1 Equipment and supplies may include: 3.1.1 Sound meter 3.1.2 Microphone 3.1.3 X-ray apparatus 3.1.4 Optical aids – borescope, stereoscope, magnifier 3.1.5 Safety equipment – ear muffs, eye protection Forensic Examination Guidelines for Silencers Page 1 of 5 Adopted 09/27/2005 3.1.6 Chemicals for gunshot residue examinations (GSR) 3.1.7 Various tools for disassembly 3.1.8 Remote firing devices 3.1.9 Range or shooting facility 3.1.10 Distances measuring devices 4.0 Concepts 4.1 Muzzle blast is the most significant portion of the report of a firearm. -
Engineering Design Handbook Guns Series Muzzle Devices.Pdf
UNCLASSIFIED AD NUMBER AD838748 LIMITATION CHANGES TO: Approved for public release; distribution is unlimited. FROM: Distribution authorized to U.S. Gov't. agencies and their contractors; Administrative/Operational Use; MAY 1968. Other requests shall be referred to Army Materiel Command, Alexandria, VA. AUTHORITY USAMC ltr 22 Jul 1971 THIS PAGE IS UNCLASSIFIED AM Lp - AMC PAMPHLET ENGINEERING DESIGN HANDBOOK GUNS SERIES MUZZLE DEVICES 3 0 SF' lC£8 ' m® -WY SUM * ©?V BOT DKTHTIJ HEADQUARTERS, U.S. ARMY MATERIEL COMMAND MAY 1968 REDSTONE SCIENTIFIC INFORMATION CENTER nun 5 0510 00231346 5 FTEADQUARTERS UNITED STATES ARMY MATERIEL COMMAND WASHINGTON, D.C. 20315 AMC PAMPHLET 17 May 1968 No. 706-251 ENGINEERING DESIGN HANDBOOK GUNS SERIES MUZZLE DEVICES This pamphlet is published for the information and guidance of all concerned. (AMCRD-R) FOR THE COMMANDER: OFFICIAL : CLARENCE J. LANG Major General, USA Chief of Staff Chief. Administrative Office DISTRIBUTION Special AMCP 706-251 PREFACE The Engineering Design Handbook Series of the Army Materiel Command is a coordinated series of handbooks containing basic in- formation and fundamental data useful in the design and develop- ment of Army materiel and systems. The handbooks are authorita- tive reference books of practical information and quantitative facts helpful in the design and development of Army materiel so that it will meet the tactical and the technical needs of the Armed Forces. This handbook is one cf a series on Guns and presents informa- tion on the fundamental operating principles and design of muzzle devices. Because of higher priorities assigned in the past to other activities, progress in the design of bore evacuators, noise suppres- sors, and smoke suppressors was not shared with that of muzzle brakes, blast deflectors, and flash suppressors. -
1) a Moving Electron of Mass Me and Initial Speed V1 Collides Head on with an Initially Stationary Hydrogen Atom of Mass Mp
1) A moving electron of mass me and initial speed v1 collides head on with an initially stationary Hydrogen atom of mass mp. The collision is elastic and remains 1-dimensional. If mp / me = 1840: (a) What is the center of mass velocity? (b) What does this collision look like from the center of mass reference frame? Draw two pictures (before and after ). (c) what fraction of the electron’s initial kinetic energy is transferred to the Hydrogen atom ? 2) A certain spring is found not to conform to Hooke’s law. The return force it exerts on being 3 extended a distance x is found to be F = -(k1x + k2x ). a) Compute the potential energy function for this force. b) If a mass m is attached to the spring and stretched out to a distance xo, what speed will it have on release when it is at the position x = xo/2 ? 3) A stone of weight w is thrown vertically upward into the air from ground level with initial speed v0. If air drag exerts a force of constant magnitude f on the stone throughout its flight: a) what is the maximum height reached by the stone ? b) what is the return speed just before impact on the way down ? 4) A 1400 kg cannon fires a 70 kg shell with a muzzle speed of 556m/s.If the cannon is mounted on frictionless rails and set at an elevation of 39 degrees above the horizontal: a) What is the recoil speed of the cannon? b) At what angle with respect to the ground is the shell projected? 5) Newton's second law is best stated in terms of momentum because in that form variable mass problems can be simply treated. -
Simulation of Cannon Recoil Dynamics for Light Vehicles Using Single Body Models
UNCLASSIFIED/UNLIMITED Simulation of Cannon Recoil Dynamics for Light Vehicles Using Single Body Models David C. Rutledge, Ph.D. Staff Engineer United Defense 4800 East River Road Minneapolis, MN 55421-1498 [email protected] SIMULATION OF CANNON RECOIL DYNAMICS FOR LIGHT VEHICLES USING SINGLE BODY MODELS Firing a large caliber cannon mounted on a lightweight vehicle can result in severe pitching reaction angles and driver accelerations. These dynamic responses must be small enough to allow the crew and vehicle to fight effectively, hence their prediction is a key aspect of weapon integration with land vehicles. United Defense uses two classes of models to predict cannon firing dynamics: • Single body, time invariant, models that focus more on delivering timely results. These are best used to close in on the correct answer, which is appropriate for rapid prototyping efforts and trend studies. • Multibody transient dynamic models such as Dynamic Analysis and Design System (DADS), which can deliver more accurate results. Such models are used for detailed design and development. The single body, time invariant, vehicle/suspension models developed at United Defense contain simplified representations of vehicle components, resulting in reduced modeling fidelity. The primary simulation inputs include firing impulse and peak force. The vehicle mass properties, geometry, and position of any stabilizers then determine vehicle response. The primary outputs are vehicle reaction angle and driver acceleration, which are determined by calculating the initial angular velocity, pitching and rolling moments, and lateral force from firing. The outputs are typically plotted as a function of cannon azimuth and elevation. The models are then tuned to correlate with previous results from firing data and DADS simulations, increasing their accuracy. -
Understanding Distance Shooting and the Type of Firearm from the Analysis
Understanding distance shooting and the type of !rearm from the analysis of gunshot sounds Nikolaos E. Tsiatis Police Major Forensic Science Division of Hellenic Police, Athens, Greece Abstract In order to study gunshot sounds, experimental shootings were conducted in an open shooting range to record the sound of gunshots. The results were tabulated for a total of 168 gunshots. Shots were red using pistols, revolvers, submachine guns, ries and shotguns in dierent calibres from selected distances relative to the recording devices. Both a conventional sound level meter (SLM) and a measurement microphone were used. These were placed at selected points behind the shooting position and the sound of each shot was recorded. At the same time, the signal received by the microphone was transferred to a computer connected through an appropriate audio interface with a pre-amplier. The peak amplitude of the gunshot was calculated in the accepted engineering units (dB) of sound pressure level. The shortest distance for the recordings was 9.60 m and the furthest was 38.40 m. The experiment was carried out using the following calibres: 6.35 mm, 7.62 mm Tokarev, 7.65 mm, 9 mm Short, 9 mm Makarov, 9 mm Parabellum, .45 Auto, .22 LR, .32 S&W, .38 S&W, .38 Special, .357 Magnum, 7.62 mm Kalashnikov and 12 GA. A decrease of the peak amplitude, equivalent to the increasing of the distance, was observed as expected. Values appeared to follow the inverse square law. By analyzing a recorded gunshot sound it is possible to calculate the distance between that discharged rearm and the recording device. -
GURPS High-Tech: Pulp Guns, Volume 1
PULP GUNS, VOLUME 1 Written by HANS-CHRISTIAN VORTISCH Edited by PHIL MASTERS An e23 Sourcebook for GURPS® STEVE JACKSON GAMES Stock #37-1631 Version 1.0 – June, 2008 ® CONTENTS INTRODUCTION . 3 Non-Repeating Pistols . 6 Exotic Shotgun Ammo . 23 GURPS High-Tech and This Book . 3 Pulp Guns Slang . 6 Shotgun Chokes . 24 Publication History. 3 Revolvers . 7 Submachine Guns. 26 About the Author. 3 Hammerless Handguns . 8 The Cutts Compensator . 30 Photo Acknowledgments . 3 Fitz Special . 9 AMMUNITION TABLES . .32 Driven to Tears . 10 EXPLOSIVES . .32 PULP-ERA FIREARMS . 4 Semiautomatic Pistols . 13 GUN CASES AND LOAD-BEARING FIREARMS AND THE LAW . .4 Flashlight Revolver. 13 EQUIPMENT . .33 SHOPPING SPREE . .5 The Boxed Cannon. 14 Shotguns . 22 WEAPON DESCRIPTIONS . .6 INDEX. 34 About GURPS Steve Jackson Games is committed to full support of Errata. Everyone makes mistakes, including us – but we GURPS players. Our address is SJ Games, P.O. Box 18957, do our best to fix our errors. Up-to-date errata sheets for all Austin, TX 78760. Please include a self-addressed, stamped GURPS releases, including this book, are available on our envelope (SASE) any time you write us! We can also be website – see below. reached by e-mail: [email protected]. Resources include: Internet. Visit us on the World Wide Web at www.sjgames.com for errata, updates, Q&A, and much Pyramid (www.sjgames.com/pyramid). Our online mag- more. To discuss GURPS with SJ Games staff and fellow azine includes new GURPS rules and articles. It also covers gamers, come to our forums at forums.sjgames.com. -
GUNS Magazine August 1960
LL ISTOL TilL JINX MARK V now with HAMMER-FORGED RIFLING Anew world's standard providing greater accur~cy, smoother bore, longer barrel liTe Another Weatherby First! With this revo Available in .257, .270, 7mm, .300, .375, lutionary new swaging process the rifling is .378, and .460 Weatherby Magnums ... actually "hammer forged" in the chrome and in standard calibers. Mark V De Luxe steel barrel under a half-million pounds Models available at sporting goods dealers pressure. Result is a mirror-smooth bore of at $265 and up, without scope. Left hand extreme hardness, accuracy and durability. mod!=lls, from $295. THE WEATHERBY IMPERIAL sCOPE-today's First, too, with the newest and safest of all most perfect scope. Lifetime guarantee. bolt actions, with nine locking lugs, and 2%X, 4X, 6X. Also 2X to 7X and 2%X completely enclosed cartridge case. to lOX Variable. Priced from $69.50. WRITE FOR FREE LITERATURE and name of nearest deller SEND FOR "TOMORROW'S RIFLES TODAY".'. Weatherby Mark V The all-new 1961 11th Edition. 140 pages (' Custom Model of valuable information and ballistical ,. ~ shown. data. Profusely illustrated. Only $2.00! . postpaid. BUILDER OF AMERICA'S FINEST RIFLES AND SCOPES CANADIAN DISTRIBUTOR: Canadian Sauer, Ltd.] 103 Church St., Toronto, Ontario, Canada .::::.., I, EUROPEAN OFFICE: Weatherby, Inc., Jaegerhotstrasse, 29, Dusseldorf, Germany ..,~ ", EUROPEAN DISTRIBUTOR: J. P. Sauer & Sohn, Dusseldorf, Germany. -_...,,_. HOME OFFICE: 2791 Firestone Boulevard, South Gate, California (Metropolitan Los Angeles) large or sma/~ short or tall ... yourl shoot well with a BROWNING .22 Automatic Good balance and proportion, trim and compact lines, without the bulk essential to heavy calibers make good shooting easy for everyone. -
California State Laws
State Laws and Published Ordinances - California Current through all 372 Chapters of the 2020 Regular Session. Attorney General's Office Los Angeles Field Division California Department of Justice 550 North Brand Blvd, Suite 800 Attention: Public Inquiry Unit Glendale, CA 91203 Post Office Box 944255 Voice: (818) 265-2500 Sacramento, CA 94244-2550 https://www.atf.gov/los-angeles- Voice: (916) 210-6276 field-division https://oag.ca.gov/ San Francisco Field Division 5601 Arnold Road, Suite 400 Dublin, CA 94568 Voice: (925) 557-2800 https://www.atf.gov/san-francisco- field-division Table of Contents California Penal Code Part 1 – Of Crimes and Punishments Title 15 – Miscellaneous Crimes Chapter 1 – Schools Section 626.9. Possession of firearm in school zone or on grounds of public or private university or college; Exceptions. Section 626.91. Possession of ammunition on school grounds. Section 626.92. Application of Section 626.9. Part 6 – Control of Deadly Weapons Title 1 – Preliminary Provisions Division 2 – Definitions Section 16100. ".50 BMG cartridge". Section 16110. ".50 BMG rifle". Section 16150. "Ammunition". [Effective until July 1, 2020; Repealed effective July 1, 2020] Section 16150. “Ammunition”. [Operative July 1, 2020] Section 16151. “Ammunition vendor”. Section 16170. "Antique firearm". Section 16180. "Antique rifle". Section 16190. "Application to purchase". Section 16200. "Assault weapon". Section 16300. "Bona fide evidence of identity"; "Bona fide evidence of majority and identity'. Section 16330. "Cane gun". Section 16350. "Capacity to accept more than 10 rounds". Section 16400. “Clear evidence of the person’s identity and age” Section 16410. “Consultant-evaluator” Section 16430. "Deadly weapon". Section 16440. -
Case 3:19-Cv-01537-BEN-JLB Document 115 Filed 06/04/21 Pageid.10515 Page 1 of 94
Case 3:19-cv-01537-BEN-JLB Document 115 Filed 06/04/21 PageID.10515 Page 1 of 94 1 2 3 4 5 6 7 UNITED STATES DISTRICT COURT 8 SOUTHERN DISTRICT OF CALIFORNIA 9 10 JAMES MILLER, et al., Case No.: 19-cv-1537-BEN (JLB) 11 Plaintiffs, DECISION 12 v. 13 ROB BONTA, in his official capacity as Attorney General of the State of 14 California, et al., 15 Defendants. 16 17 I. INTRODUCTION 18 Like the Swiss Army Knife, the popular AR-15 rifle is a perfect combination of 19 home defense weapon and homeland defense equipment. Good for both home and battle, 20 the AR-15 is the kind of versatile gun that lies at the intersection of the kinds of firearms 21 protected under District of Columbia v. Heller, 554 U.S. 570 (2008) and United States v 22 Miller, 307 U.S. 174 (1939). Yet, the State of California makes it a crime to have an AR- 23 15 type rifle. Therefore, this Court declares the California statutes to be unconstitutional. 24 Plaintiffs challenge a net of interlocking statutes which impose strict criminal 25 restrictions on firearms that fall under California’s complex definition of the ignominious 26 “assault weapon.” Hearings on a preliminary injunction were consolidated with a trial on 27 the merits pursuant to F.R.C.P. Rule 65(a)(2). Having considered the evidence, the Court 28 1 19-cv-1537-BEN (JLB) Case 3:19-cv-01537-BEN-JLB Document 115 Filed 06/04/21 PageID.10516 Page 2 of 94 1 issues these findings of fact and conclusions of law,1 finds for the Plaintiffs, and enters 2 Judgment accordingly.