Gents,

The gun has damascus barrels and while they measure solid they feel delicate. It might be just in my head, but I am not willing to subject her internals to the hardest shot, choke or not. I don't want to take the chance, yet.
I shot it yesterday with 7.5 subsonic F2 B&P and smashed targets out to 30 yards so there might not be a real problem, this cylinder. However, I am interested in learning about the many possibilities involved with changing the loads through same tube.
For that I thank you very much.
In regards to scoring the barrels I think I remember reading one of the manufacturers mentioning that hevy shot or similar hard non toxic can do that to steel barrels. The scratching was mostly esthetic and not structural. But that is a different topic...