I need help with the terms "extended casing" and "live rounds"
Can somebody with knowledge on guns help me please? I have no interests in guns but just trying to find some information out about something I read.
What I'm trying to find out is what an expended casing is and where is it located in a gun. Why would a Colt brand gun have a Smith & Wesson casing? Do you actually load a gun with other brand name parts? And what does a live round mean and its relationship with the expended casing.
I would appreciate a picture of an expended casing to see what an expended casing looks like and what is it used for?
What is a live round marked "Speer"? Is this what a bullet would be?