Ok, thank you for that explanation. I think I'm understanding that - the throat relative to the chamber and bore of the barrel.
So when you machine the throat in your example you give, will the dimentions you end up with shoot "most" bullets accurately?
I may be asking for an impossible solution to what is probably a more complex process. Can you chamber/throat a barrel so that its accurate firing a variety of bullets - as long as they are of the same weight?? Or is that too much of a wildcard with any given barrel??
