PPT-What is ballistics?

Bellringer 41415 What is ballistics The study of bullets and firearms Bellringer 41415 Ballistics Notes pages 492 494 INB 51 What questions are ballistics experts attempting to answer. Using Lapua Ballistics there is no need for checking tables and calculating cosines for rather imprecise inclination compensation Not to mention the often ignored but vast influence of cartridge temperature on muzzle velocity and atmospheric condit Most handguns are referred to as singleaction or doubleaction A singleaction firearm requires the user to manually pull back the hammer before the firearm allows t he user to either manually cock the hammer or simply pull the trigger and allo w the Bullets and Casings. Timeline of Ballistics Examination. 1923:. FBI Bureau of Forensic Ballistics established. 1929:. weapons used in the St. Valentine’s Day massacre identified by matching bullets. The vast majority of. U.S. homicides involve. guns. And they are more. powerful than ever.. . Lansing State Journal,. July 2007 . 1998--Deaths due to handguns. US 11,789 . Germany 373. Canada 151. Notes on page 75. Warning. Next slide is slightly disturbing. Entrance . vs. exit wounds. Entrance Wounds are typically smaller and neater. Exit Wounds are typically larger and messier. Collecting and Packaging Ballistic evidence. Gunshot Residue (GSR); Wounds and Trajectory. Gunshot Residue. Traces of smoke and particles of unburned powder carried sideways from the firearm by the expansion of gases as the bullet is fired. GSR containing nitrates can stick to the person holding the firearm and leave evidence on the shooter. 9. /3/15. Bellwork. How are you going to make a match between the crime scene bullet casing and test fired ones?. Ballistics p.34-35. Topic: Casings. Evidence: Match caliber and firing pin impressions to crime scene guns.. Linear DensityFilamentsTwaron-TypeStrengthTenacityElongationChord at Breakat Breakat BreakModulusDtex (eective)No.mN/texGPaMicrolament Ultra Micro MicrolamentMicrolamentMicrolamentMicrolament Projectiles. Definition: any material that travels with the ability to injure . Energy is dependent on the velocity, mass, and distance traveled by projectile. Not all projectiles come from fire arms!!!. articles, however, were concerned with the issue of making a firearm that is inoperable due to rust/corrosion issues, operable. The articles did not address the issues involving the potential for dam “ A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.”. 2. nd. Amendment to the US Constitution. “. GAVS 15. SFS4 Students will evaluate the role of ballistics, tool marks and evidence of arson in forensic investigation. . a. . Identify firearm lab tests used to distinguish the characteristics of ballistics and cartridge cases. . The Chinese invented gunpowder over a thousand years . ago. . using KNO. 3. , charcoal and sulfur.. Muzzle-loading matchlocks used wicks to ignite the gunpowder. . The cartridge and breech loading followed. . With new chapters, homework problems, case studies, figures, and examples, Ballistics: Theory and Design of Guns and Ammunition, Third Edition encourages superior design and innovative applications in the field of ballistics. It examines the analytical and computational tools for predicting a weapon\'s behavior in terms of pressure, stress, and velocity, demonstrating their applications in ammunition and weapons design. New coverage in the Third Edition includes gas-powered guns, and naval ordinance. With its thorough coverage of interior, exterior and terminal ballistics, this new edition continues to be the standard resource for those studying the technology of guns and ammunition.