Yes, proper nomenclature is important. Things are given specific names so when one person mentions it every one knows what their talking about. That's part of the problem, not everyone DOES know what they are talking about. For example, I never had any interest in the older rounds,Far as I remember until Cowboy Action shooting got started, if you had a .45 it was ACP, I thought .45 Colt, and .45 Long Colt were different calibers.