Originally Posted by BroncoBeavis
Can't speak for everyone, but I've never heard a semi automatic handgun referred to as anything but semi automatic or semiauto. At least not in conversational terms.
This would be like someone talking football using a phrase like "Two-back set" while counting the QB. Technically correct... but a clear indication that the person speaking is pretty unfamiliar with the topic at hand.
When I was in the Army, every officer I knew carried a .45 and called it a "45 Auto."
Hmmm. That's what Colt calls them too. http://www.coltautos.com/1911a1ci.htm