carl, Fuchs and Ken White explained my point.

It seems that calibre debate is not over.

Mattis pushed for 6.8mm ammo

http://www.marinecorpstimes.com/news..._ammo_031010w/

... and I don't understand fully (foliage, ground, wall? aspects) this argument

Does that mean that 7.62 rounds don’t have sufficient stopping power?” Brogan asked about Kasal’s actions. “I submit the answer is no. If there had been a central-nervous shot, it might have dropped him. The same is true with 5.56 ammunition. Location is more important than stopping power.”
after watching this youtube video.

http://www.youtube.com/watch?v=NzIOa...eature=related

Why some people want .45 pistols when they can get hollow point 9 mm ammo?

http://pistol-training.com/archives/2436