,Table of Contents
Terminology ..................................................................................................................... 3
Barrels, rifling and twist ................................................................................................... 4
The chamber and the barrel ................................................................................................................................... 4
The firing process .................................................................................................................................................... 4
Examining rifle marks ............................................................................................................................................. 5
Using the correct ammunition ................................................................................................................................ 7
Cartridge case investigation ................................................................................................................................... 7
Self-loading or single shot mechanism ................................................................................................................... 7
Class characteristics................................................................................................................................................ 8
Shotgun ammunition ID .......................................................................................................................................... 9
Shotgun: Special types ............................................................................................................................................ 9
Large caliber rounds- baton rounds ...................................................................................................................... 10
The bullet .............................................................................................................................................................. 11
Projectile motion ............................................................................................................ 14
Ideal vs real flight path ......................................................................................................................................... 14
Important concepts .............................................................................................................................................. 14
Calculating Cd from wind tunnel data .................................................................................................................. 16
Examples of drag values ....................................................................................................................................... 16
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