Thanks to all who commented and gave info on my DR ....I learned more about this gun in one week here than I have since my Grandfather gave it to me 38 years ago.You guys certain are fountains of knowledge !! I have been a bit perplexed on why the barrels do not have BP Marks . Also "Curl" mention the slow twist rate in barrels (for BP)which is definately NOT the case (they have nearly as much twist as a modern rifle !) So could this gun which started out as a BP been given a new set of barrels by H&H and just not recorded as such ?. I've seen several BP guns and these barrels just don't look and feel like BP barrels ......they are very thick and very heavy . There are NO BP marks or Reproof marks on the flats just what I mentioned above. I've have shot this gun for years with full nitro loads (sounds like maybe I shouldn't) but I still have all my fingers. Maybe the Elephant and Buffalo should have told me not to use the gun that way HA HA.