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A Basic Firearm Tutorial by John Kraemer, F-ABMDI April 2009
A Basic Firearm Tutorial By John Kraemer, F-ABMDI April 2009 Statistics for Firearm-Related Deaths According to a 2005 study conducted by the Centers for Disease Control and Prevention (CDC), there were almost 31, 000 firearm‐related deaths within the United States. Of the 31, 000 deaths, 55% of those deaths were certified as suicides, 40% certified as homicides, 3% certified as accidents, and the remaining 2% were certified as undetermined. A previous study by the CDC covering the years 1993 to 1998 also found that most firearm‐related deaths were again caused by self‐inflicted acts and men and individuals between the ages of 15 and 34 comprised a majority of those firearm‐related deaths. Every medical examiner or coroner’s office across the country has investigated a firearm‐ related death. Depending on your jurisdiction, these types of deaths may comprise a large portion of your caseload or a small portion. Regardless of the number of firearm‐related deaths your office investigates, every medicolegal death investigator must be knowledgeable in the safe handling of firearms, basic ballistics terminology and the parts of a particular firearm, whether it be a semi‐automatic handgun, revolver, shotgun or rifle. General Safety Practices The safe approach to and subsequent handling of firearms is your personal responsibility. Safety is the number one priority when handling such weapons. At any death scene involving a firearm, the death investigator MUST ALWAYS ASSUME THE FIREARM IS LOADED! Most accidental discharges of a firearm are the result of not following safe gun handling practices and failure to use common sense. -
The Interaction Between Clothing and Air Weapon Pellets Graham Wightman, K
CORE Metadata, citation and similar papers at core.ac.uk Provided by Abertay Research Portal The interaction between clothing and air weapon pellets Graham Wightman, K. Wark and J. Thomson This is the accepted manuscript © 2014, Elsevier Licensed under the Creative Commons Attribution-NonCommercial- NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ The published article is available from doi: 10.1016/j.forsciint.2014.10.039 The interaction between clothing and air weapon pellets G.Wightman a, K. Wark, J Thomson a(Corresponding Author) School of Science Engineering and Technology, Abertay University, Bell Street, Dundee, DD1 1HG, Scotland. [email protected] Telephone: +44 1382 308659 Highlights • The effect of clothing on air weapon pellet penetration into ballistic gel has been examined. • Damage to the clothing depends on pellet shape and fabric weave. • Penetration depends: on range, pellet shape, the fabric weave, and how the clothing is in contact with the gel. • With loosely draped clothing at 20 yards range few pellets penetrated the gel. • Estimates suggest that these pellets stop in 75 microseconds, requiring a force of 1700 N. Abstract Comparatively few studies have been carried out on air weapon injuries yet there are significant number of injuries and fatalities caused by these low power weapons because of their availability and the public perception that because they need no licence they are assumed to be safe. In this study ballistic gel was tested by Bloom and rupture tests to check on consistency of production. Two series of tests were carried out firing into unclothed gel blocks and blocks loosely covered by different items of clothing to simulate attire (tee shirt, jeans, fleece, and jacket). -
Winchester® Super X® 4, Autoloading Shotgun Owner's Manual
Winchester ® Super X® 4, Autoloading Shotgun Owner’s Manual Important instructions for the Contents Page State Warning ..................................1 ® ® Winchester Super X 4 WARNING: You Are Responsible For Firearms Safety ..1 Autoloading Shotgun General Description and Operation .................6 Nomenclature ..................................8 Winchester Repeating Arms Customer Service Department (United States) Serial Number ..................................8 275 Winchester Avenue Initial Cleaning and Oiling ........................8 Morgan, Utah 84050-9333 Operation of the “Safety” .........................9 Phone: (800) 945-5237 Assembly .....................................12 If you have any questions or comments regarding Disassembly ...................................14 your new firearm, please feel free to write or call us. Use the space below to record information about Ammunition ..................................14 your new firearm. Magazine Capacity .............................16 Three-Shot Adaptor (Plug).......................16 Model ________________________________________ Loading ......................................18 Firing ........................................21 Serial Number _________________________________ Unloading ....................................22 Purchased From ________________________________ Interchangeable Choke Tube System ...............22 Scope Mounting Instructions .....................25 Date of Purchase _______________________________ Extra Barrels...................................26 -
About Pellet Numbers and Pellet Testing
AroundtheRange By Scott Pilkington About Pellet Numbers and Pellet Testing The first thing you need to know is ent head sizes. that competition airguns used in the Head sizes Olympic disciplines are .177 caliber, start at 4.48 which is equal to 177 thousandths of mm and con- an inch. The metric equivalent to .177 tinue through inch is 4.50 millimeters, therefore the 4.49, 4.50, 4.51 European caliber designation is 4.5 and 4.52 mm. mm. These sizes Here is a sampling of lot numbers on different packaging. are determined Next, you should know that the small- by the various est quantity of match pellets are typi- pellet (H & N, RWS, JSB, or Vogel) and size molds used to create the pellets cally packaged as 500 pellets and are a head size diameter (4.48, 4.9, 4.50, in the manufacturing process. But, you in containers called tins. When ten tins etc). It is a profound misunderstand- ask, isn’t one .177 barrel the same size are packaged together, they are called ing of this test target which causes so as another .177 barrel? No, not really. a sleeve. A sleeve contains 5,000 much confusion for parents, athletes pellets and weighs a little more than In the barrel manufacturing process, and coaches. six pounds. Five sleeves packaged the tolerances are such that the fin- Unfortunately, the conclusion of proper together are called a case. A case ished size of the lands and grooves of head size pellets for this particular contains 25,000 pellets and weighs the rifling will vary enough from one airgun is drawn when the new owner about 32 pounds. -
Ats 34 and 154 Cm Stainless Heat Treat Procedure
ATS 34 AND 154 CM STAINLESS HEAT TREAT PROCEDURE This is an oil hardening grade of steel which will require oil quenching. The oil should be a warm, thin quenching oil that contains a safe flash point. Olive oil has been used as a sub stitute. As a rule of thumb, there should be a gallon of oil for each pound of steel. For , warming the oil before quenching, you may heat a piece of steel and drop it in the oil. 1.) Wrap blades in stainless tool wrap and leave an extra two inches on each end of the package. (This will be for handling purposes going into the quench as described below.) We suggest a double wrap for this grade. The edges of the foil should be double crimped, being careful to avoid hav ing even a pin hole in the wrap. 2 . ) Place in the furnace and heat to 1900"F. After reaching this temperature, immediately start timing the soak time of 25-30 minutes. 3.) After the soak time has elapsed, very quickly and carefully pull the package out with tongs~ place over the quench tank and snip the end of the package allowing the blades to drop into the oil. You should have a wire basket in the quench tank for raising and lowering the blades rather than have them lie s till. Gases are released in the quench and would form a "trap" around the steel unless you keep them movi~g for a minute or so. *IMPORTANT--It is very important that the blades enter the oil quench as quickly as possible after leaving the furnace ! Full hardness would not be reached if this step is not followed. -
RWS Sports Ammunition Brochure
THE AMMUNITION COUNTS AIR GUN PELLETS - RIMFIRE CARTRIDGES READY FOR SUCCESS Top athletes demand a great deal of themselves in order to succeed in reaching their goals. That makes it all the more important for them to be able to trust that with regard to ammunition, the manufacturer has the same aspirations and wants to achieve perfection with their products. Millions of target shooters trust RWS for a reason. RWS | CONTENTS | 1 Christoph Dürr Member of Swiss National squad CONTENTS Page RWS successes 2 Interview with top shooters 4 RWS rimfire cartridges RWS air gun pellets RWS rimfire cartridges 6 RWS air gun pellets 20 - Premium Line 10 - Premium Line 22 - Professional Line 12 - Professional Line 24 - Sport Line 13 - Sport Line 25 - Field Line 14 - Field Line 26 Fascination Biathlon 16 RWS Test range 18 2 | SUCCESSES | RWS Andrea Arsovic Sylwia Bogacka Andrea Arsovic Barbara Engleder Silver medalist Olympic Games 2012 Silver medalist World cup Final 2014 Gold medalist Olympic Games 2016 RWS BRANDED PRODUCTS World-class performance with the perfect ammunition The RWS brand proves its outstanding daily by the quality products demon- top German quality is not cheap. But ammunition expertise with an exten- strating their superior performance and your own safety and the best possible sive product range in the sporting and total reliability. chances for greater success are worth hunting area for small arms and air guns. From training sessions to winning the price of this top class ammunition. Since their introduction, RWS cartridges Olympic titles or hunting RWS has a have enjoyed worldwide success with product to suit every purpose. -
A Comparison of Thixocasting and Rheocasting
A Comparison of Thixocasting and Rheocasting Stephen P. Midson The Midson Group, Inc. Denver, Colorado USA Andrew Jackson Arthur Jackson & Co., Ltd. Brighouse UK Abstract The first semi-solid casting process to be commercialized was thixocasting, where a pre-cast billet is re-heated to the semi-solid solid casting temperature. Advantages of thixocasting include the production of high quality components, while the main disadvantage is the higher cost associated with the production of the pre-cast billets. Commercial pressures have driven casters to examine a different approach to semi-solid casting, where the semi-solid slurry is generated directly from the liquid adjacent to a die casting machine. These processes are collectively referred to as rheocasting, and there are currently at least 15 rheocasting processes either in commercial production or under development around the world. This paper will describe technical aspects of both thixocasting and rheocasting, comparing the procedures used to generate the globular, semi-solid slurry. Two rheocasting processes will be examined in detail, one involved in the production of high integrity properties, while the other is focusing on reducing the porosity content of conventional die castings. Key Words Semi-solid casting, thixocasting, rheocasting, aluminum alloys 22 / 1 Introduction Semi-solid casting is a modified die casting process that reduces or eliminates the porosity present in most die castings [1] . Rather than using liquid metal as the feed material, semi-solid processing uses a higher viscosity feed material that is partially solid and partially liquid. The high viscosity of the semi-solid metal, along with the use of controlled die filling conditions, ensures that the semi-solid metal fills the die in a non-turbulent manner so that harmful gas porosity can be essentially eliminated. -
Signature Redacted
A Novel Method for the Production of Microwires by Alexander Michael Couch B.S., United States Naval Academy (2017) Submitted to the Department of Mechanical Engineering in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY February 2019 Massachusetts Institute of Technology 2019. All rights reserved. redacted A u th o r ...........................................................Signature .. Department of Mechanical Engineering 1, y.- january 14, 2019 Certified by...........Signature redacted ......... Kasey Russell Principal Member of the Technical Staff, The Charles Stark Draper Laboratory Certified by.....SignatureC ertified by ....... redacted Thesis.... .....Supervisor .. Irmgard Bischofberger Assistant Professor of Mechanical Engineering Signature redacted Thesis Supervisor A ccepted by ............. .................. MASSACHUSES INSTITUTE I Nicblas Hadjiconstantinou OF TECHNOWOGY Chairman, Department Committee on Graduate Theses FEB 252019 LIBRARIES ARCHIVES A Novel Method for the Production of Microwires by Alexander Michael Couch Submitted to the Department of Mechanical Engineering on January 14, 2019, in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Abstract Radio frequency (RF) systems such as cell phones and GPS can perform better and last longer if we can reduce electrical heat loss in the wires. This is typically done in power systems by twisting or weaving the wires, following one of several patterns. Though, at radio frequencies, wire dimensions must scale down by as much as 1000 times in order to achieve the same effects. This project decomposes the problem into two main categories; the manufacturing of micron scale wires and the manipulation of these wires in order to form a twisted bundle. -
Conventional Deep Drawing Vs Incremental Deep Drawing
MED, JNTUH August 2018 CONVENTIONAL DEEP DRAWING VS INCREMENTAL DEEP DRAWING A. Chennakesava Reddy Professor, Department of Mechanical Engineering JNTUH College of Engineering, Hyderabad 1. Conventional Deep Drawing Process: Deep drawing is a sheet metal forming process in which a sheet metal blank is radially drawn into a forming die by the mechanical action of a punch. It is thus a shape transformation process with material retention. The process is considered "deep" drawing when the depth of the drawn part exceeds its diameter. This is achieved by redrawing the part through a series of dies. The flange region (sheet metal in the die shoulder area) experiences a radial drawing stress and a tangential compressive stress due to the material retention property. These compressive stresses (hoop stresses) result in flange wrinkles (wrinkles of the first order). Wrinkles can be prevented by using a blank holder, the function of which is to facilitate controlled material flow into the die radius. Figure 1: Example of deep drawn part. Figure 2: Conventional deep drawing process. The total drawing load consists of the ideal forming load and an additional component to compensate for friction in the contacting areas of the flange region and bending forces as well as unbending forces at the die radius. The forming load is transferred from the punch radius through the drawn part wall into the deformation region (sheet metal flange). In the drawn part wall, which is in contact with the punch, the hoop strain is zero whereby the plane strain condition is reached. In reality, mostly the strain condition is only approximately plane. -
Cold Drawing Process –A Review
Praveen Kumar, Dr. Geeta Agnihotri / International Journal of Engineering Research and Applications (IJERA) ISSN: 2248-9622 www.ijera.com Vol. 3, Issue 3, May-Jun 2013, pp.988-994 Cold Drawing Process –A Review * ** Praveen Kumar , Dr. Geeta Agnihotri *(M.Tech Scholar, Department of Mechanical Engineering, M.A.N.I.T.,Bhopal) ** (Professor, Department of Mechanical Engineering, M.A.N.I.T.,Bhopal) ABSTRACT II. COLD DRAWING PROCESS-AN Cold drawing is widely used metal OVERVIEW forming process with inherent advantages like The Cold drawing is one of the oldest closer dimensional tolerances, better surface metal forming operations and has major industrial finish and improved mechanical properties as significance. It is the process of reducing the cross- compared to hot forming processes. Due to the sectional area and/or the shape of a bar, rod, tube or ever increasing competition with the advent of wire by pulling through a die. This process allows globalization it has become highly important to excellent surface finishes and closely controlled keep on improving the process efficiency in terms dimensions to be obtained in long products that have of product quality and optimized use of constant cross sections. It is classified as under: resources. In view of this different models have Wire and Bar Drawing: Cross-section of a been proposed and validated using experimental bar, rod, or wire is reduced by pulling it results over a long period of time. The demands through a die opening (Fig. 1 a) .It is in the automobile sector, energy sector and similar to extrusion except work is pulled mining sector have led to several modifications in through the die in drawing. -
Electroless Nickel Plating
PRC-5007 Rev. E Process Specification for Electroless Nickel Plating Engineering Directorate Structural Engineering Division May 2020 National Aeronautics and Space Administration Lyndon B. Johnson Space Center Houston, Texas Verify that this is the correct version before use. Page 1 of 10 PRC-5007 Rev. E Process Specification for Electroless Nickel Plating Prepared by: Signature on File 05/26/2020 John Figert Date Materials and Processes Branch/ES4 Reviewed by: Signature on File 05/26/2020 Daniel Peterson Date Materials and Processes Branch/ES4 Reviewed by: Signature on File 05/26/2020 Sarah Luna Date Materials and Processes Branch/ES4 Approved by: Signature on File 05/27/2020 Brian Mayeaux Date Materials and Processes Branch/ES4 Verify that this is the correct version before use. Page 2 of 10 PRC-5007 Rev. E REVISIONS VERSION CHANGES DATE -- Original version 5/14/1996 A Reviewed and update for accuracy; Author changed 7/21/1999 B General changes due to reorganization (changed EM to 12/14/2005 ES). Updated references in 6.0 and updated section 3.0. Removed reference standard SAE AMS 2405B. Updated SAE AMS 2404 to revision E. C Minor format changes 3/26/2010 D Updated SAE AMS 2404E to Revision F 7/12/2012 E Re-formatted. Author changed, reviewer added, 5/15/2020 approver changed. Major Rewrite of the entire document. Updated and added the drawing references. Added information on thickness callouts and classes. Added information on hydrogen embrittlement. Added information on phosphorus content. Added references. Added material requirements. Added process qualification and process information. Added verification requirements for hydrogen bakeouts. -
Orientation Booklet
Martin County Sportsmen’s Association New Member Orientation Range Booklet Contained in the following pages of this orientation are a collection of safety rules that when applied and exercised mitigates the possibility of any negligent discharges that could cause injury, destruction to property or worse. The purpose of the MCSA range safety rules is to promote safe and responsible gun handling and target shooting. Safety is the primary responsibility of every member using the range. Surrounding our range we have commercial businesses, structures and homes, therefore we cannot allow rounds from leaving the premises (depending on the cartridge, caliber and slope a bullet can travel 2.5 – 4+ miles). Hence, we are here today to learn how we must conduct ourselves while at the range and on the firing line to ensure safe gun handling and shooting. MCSA is operated on the “COLD RANGE” principle. All firearms must be unloaded and transported in a case around the range property and between ranges (No Uncased Slung Rifles). Your firearm can only be uncased at the firing line when the range is HOT. Your firearm may only be loaded or unloaded on a HOT range at the Firing Line. Carrying a concealed weapon is not allowed on MCSA property. If you have a Concealed Carry firearm and plan on shooting it at the range you must unload and place it in a carrying case before entering the property. Once on a range at the firing line you can remove your concealed carry firearm from your case, load and shoot. All members must adhere to these 3 Safety Rules + 1 at All Times.