I like old books. Google has a scanned copy of a 500 page book printed in 1915 called
Rifles and Ammunition and Rifle Shooting.
Has some interesting history and information in it. Always interesting to see how some things have stayed the same while other ideas have changed over the years.
Book can be downloaded in pdf for free by using the PDF link in the upper right hand corner.
Rifles and ammunition and rifle shooting - Google Books