Bolt face education

[KTP]

Can someone direct me to where I can read to learn about bolt face differences ? Long action, short action, firing pin holes, etc. interchanging etc I need to change a couple but don't want to make a mistake.

[stangfish]

http://www.savageshooters.com/content.php?264-What-Fits-Cartridge-List-(PDF-version)

http://www.savageshooters.com/content.php?158-Savage-Firing-Pins-Bolt-Faces

http://www.savageshooters.com/content.php?131-Savage-Bolt-Head-Configurations

All this and more in the savage centerfire facts
http://www.savageshooters.com/content.php?124-centerfire-faq-s