Ammo cross sections
 

Cross section photos of some interesting ammunition.
In spite of the title, these are not all WWII bullets obviously.

http://petapixel.com/2013/06/21/ammo...d-during-wwii/

Nice,

Here are 2 sectioned WW2 German 9x19 rounds:

Mit Eisenkern (mE) on the left and Sintereisen (sintered iron) on the right.

Also some examples of 9x19 tracer rounds and a small number of penetration improving rounds used by several police forces in Europe.

And some older examples of 1970s GeCo 9mm rounds in several guises:

Standard nato type blank firing round.
Normal GeCo 9mm round and the heavier version for the use of silencers (SD = Schalldämpfer).

Here are some more interesting cut-aways:
http://cartridgecollectors.org/?page...e-of-the-month
http://cartridgecollectors.org/cmo/cmoindex.htm

Here a good site about amo :

http://www.municion.org/

In the 'hood, we call those 'vest penetrators'... :(

They are mainly designed to transfer energy to their target more efficiently than the standard 9mm does. In crowded areas the police want to avoid shooting any bystanders as a result of overpenetration. The rounds are also very effective tire punchers.

The green tipped version has been in use with the Dutch police for many years, being superseded by a slightly improved version with an orange tip, the 'Action NP' round.

The brass alloy, being somewhat denser, does tend to wear out the barrels quicker. This triggered a faster replacement of the current police pistol, the Walther P5. It's replacement will be the Walther PPQ-NL, the first guns were issued only a short while ago.