introduction to ammunition
DESCRIPTION
Introduction to ammunition. Ballistic analysis Note #1. Basic gun types. Handguns Rifles Shotguns Other types. Ammunition design. HANDGUNS AND RIFLES HAVE SIMILAR AMMUNITION DESIGN. SHOTGUNS HAVE SIMILAR DESIGN BUT SEVERAL VARIATIONS. Bullet design. Bullet: - PowerPoint PPT PresentationTRANSCRIPT
INTRODUCTION TO AMMUNITION
BALLISTIC ANALYSIS NOTE #1
BASIC GUN TYPES
•HANDGUNS• RIFLES
• SHOTGUNS•OTHER TYPES
AMMUNITION DESIGN
HANDGUNS AND RIFLES HAVE SIMILAR AMMUNITION DESIGN
SHOTGUNS HAVE SIMILAR DESIGN BUT SEVERAL VARIATIONS
BULLET DESIGN• BULLET: • THE PROJECTILE(S) WHICH ACTUALLY EXITS THE BARREL OF THE GUN WHEN FIRED• THREE MAIN SHAPES: •ROUND NOSE•HOLLOW POINT•WAD CUTTER
THREE MAIN SHAPES OF BULLETS
THREE BASIC COMPOSITIONS OF BULLETS
LEAD HALF-JACKETED JACKETED COATED WITH COPPER FULL
METAL JACKET ON THE BOTTOM
WHAT HAPPENS TO BULLETS WHEN THEYARE FIRED?
Lead bulletGun powderPrimerCartridge case
PULL THE TRIGGER AND . . .
1.A PIN OR HAMMER STRIKES THE PRIMER. THIS CAUSES A SPARK.
2.THE POWDER IS THEN IGNITED CAUSING AN EXPLOSION.
3.THIS EXPLOSION STARTS THE BULLET DOWN THE BARREL OF THE GUN
DOWN THE BARREL
4. AS A BULLET TRAVELS DOWN THE BARREL OF A GUN. IT IS TWISTED BY THE LANDS AND GROOVES OF THE BARREL.
OUT OF THE BARREL
5. THIS RIFLING CAUSES THE BULLET TO EXIT THE END OF THE BARREL IN A SPIRAL MOTION.
HIT A TARGET 6. WHEN THEY HIT A TARGET:• MOST BULLETS TEND TO
MUSHROOM• SOME BULLETS NEARLY
DISINTEGRATE.
LEFT ARE BULLET FRAGMENTS FROM A ½ JACKETED HOLLOW POINT.
• NOT ALL BULLETS MUSHROOM THE SAME.
• IT DEPENDS ON THE SPEED AND SHAPE OF THE BULLET, AND THE CHARACTERISTICS OF THE TARGET.
• THE STRIATIONS FROM THE RIFLING ARE STILL VISIBLE ON THE RIGHT