Sorry Joe, I got distracted from my last message.
There are lots of different makes of hammer guns that are safe to shoot with modern ammo. Try looking at the Husqvarna models, many have lefaucheux break actions (how cool is that!) and are safe to shoot with modern ammo. I recently picked up what I suspect to be a 1950-60s vintage Russian made 16 gauge Tula SXS hammer gun. Its not the prettiest or fanciest gun by a long shot, but its literally built like a tank, I honestly wouldnt be afraid to shoot any factory 16 gauge ammo through it. I spent $300 for it and right now its my latest project to turn it into a kick-a$$ pheasant gun. This gun was heavily molested by some Russian goober hammer mechanic, but I think with some resculpting of the stock and cleaning up some dings goober left with his hammer on the metal work it'll clean up into a very nice looking gun. Anyhow, it'll be fun project.
You just have to look around. Go to this thread
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=270597#Post270597 Steve
