I was one of those nerds in school who enjoyed physics, and especially ballistics and forensics. Concepts like gravity and inertia have always fascinated me, this may explain why I went into finance. I always enjoy charts and graphs. Here is an interesting link to alot of calibers and their ballistics. Click on the link and subsequently to the left hand -DETAILS- portion in the left margin of each caliber to get a full perspective. I could spend hours on that page alone. Yes, I am weird, but its a good kind of weird. LOL. (Yes, I got A's in Physics and Calculus).