Terminology varies with the older rounds. .30 WCF vs. 30-30 for example.
Escrima Demon- could I suggest not including in every post "my dad says...." If you have questions I'm all about helpin find answers, but I don't like sounding like a thrid person debate.
As to the role of handguns in gun battles rember that funtional repeating handguns predated fucntional repeating rifles by 20 years, give or take. As a cavalry arm they did have their day in the sun.