Example Case Studies:

A- Round vs. Chiseled Round

Examination of some ballistic characteristics can be done with the naked eye. Cartridge on the left was fired from a "Glock" automatic pistol, as for the one on the right, it could have been fired from many different guns, and closer examination is required.

B- Hand-gun Rifling: Automatic vs. Revolver

The bullet on the left was fired from an automatic pistol, and the rifling grooves are the same distance apart from top to bottom. The bullet on the right was fired from a revolver, and the grooves are wider at the top then at the bottom, due to slippage.

C- Ejection Marks

Casings are dragged across the edge of the ejection port as they are being thrown from the weapon, these marks can be matched.

D- Expansion and ballistics.

Many times ballistics can survive extreme impacts, as demonstrated with this 30 caliber soft-point bullet.