Forensic Ballistic and Collision Analysis : Part 2

Part 1, where I did my experiment about collision analysis. Part 2, I did bullet and cartridge ID. An experiment that took me more than 2 and a half hours for 3 bullets and 3 cartridges, trying to identify what types of bullets and cartridges, its primers, bullet rifling, length and diameters, all these have to be write in MG11 witness statement forms....

9mm Semi-jacketed lead core brass jacket

another similar 9mm

a .22 / 5.5mm soft point jacketed

here shown a picture of my hand trying get the base of the bullet to be parallel with the digital camera, once the bullet been fired and hit something, it deforms. Sometimes it deforms into a mushroom-like object, but sometimes might shattered into pieces.

a 9mm cartridge.. trying to calculate the angle of the rimless cartridge, near the extrator groove... 

a rifle cartridge.. using the same computer software and technique, but have an extra angle to calculate which is the neck of the cartridge...

a deformed bullet, look at the middle part, the lead core..

380 Winchester, metal rimmed cartridge for revolvers... 

More photos on the equipment is in my phone, which will be up soon...