The irritation factor makes it all worth while.
There have been several .45 rimed cartridges of long ago. Longest of which is the Colt (Long).
450 revolver
45 Webley
450 Adams
45 S&W
45 Colt
45 M.P.
+?
Sooo, I find the term ".45 Long Colt" usefully descriptive.
Sam