Under the line it means the same....!
In "gezogenen Läufen" only bullets are fired. On the other hand, you can shoot slugs in a gun and this is a Geschoss or bullet too! But believe me, in german gezogener Lauf means only bullets are fired out of it! I have all german proof stamps her in the book of G.Wirnsberger, the Gun proof stamps "bible" and he say: Gezogene Läufe. I'm sorry, but I am too dull to get pics of this into my post... :-((

Gunwolf

http://www.hunting-heritage.com