Raimey, apologies for not following the thread closer, but the late markings on some of the pictures of the Wise gun may be of the Osborne barrels which, we assume, were made later than the first set. I don't remember whether the Osborne barrels were choked or not. On the day of the photo shoot, I measured all bores and chokes, but I don't know whether those measurements got as far as the DGJ article. I will reread the article in the next few days, but can't do it right now. Bill Murphy