Understanding Firearm Ballistics by Robert A. Rinker

That's the book I've been studying to learn the science behind ballistics.

http://www.appliedballisticsllc.com/index.htm Here I've read some articles, all quite interesting.

When it comes to ballistics, there is much to be learned. I know a fair bit now, and I've only just begun.

Bullets from muzzleloaders aren't dissimilar to bullets from handguns or rifles in the way they behave in the air. The principles that you learn about one gun can usually be somehow applied to another.