Miller, you are the man. My H Grade is the strongest looking set of barrels of any of my Lefevers. I have never shot smokeless in Damascus or Twist guns, but with all the attention being given to them in the Sherman Bell articles, I'm about to load some "summer loads" with 7/8 ounce or one ounce over light charges of a slow powder like Unique. Not much of that type of load in the books, but it should be about 5500 to 6500 psi. I don't think I own a composite barrel gun that would object to loads like that. I guess this is the year I start shooting all those neat guns.