Stuart Hoskins (asker) Nov 4, 2010:

Perhaps I'm just being a doubting Thomas While I obviously checked “insert barrel” and accepted its existence/validity before posting my question, it doesn’t make sense to me that Google returns more hits for “vlozna hlaven” (in all cases) than it does for “insert barrel” (limiting the latter to UK sites and using “omitted results” mode). (I realize the limitations of my method.) I’ve been toying with the German (Einstecklauf), which yields many more options, but I really need an expert for this.