Best Choices for Self Defense Ammunition - This
is hopefully going to answer all your questions about what ammunition
to pick for your rifle, pistol, or shotgun. Lists of well-performing
ammunition are provided.
Exotic Ammo FAQ - information about ammo such as Extreme Shock, Glaser, RBCD, etc.
Wound Ballistics - research papers that provide a wealth of information about bullet terminal performance.
The Box O'Truth - Arfcom's own Old_Painless' website. Pratical information for what happens when you shoot various things with different bullets. A very informative website - make sure to check it out.