I just spoked to Paul Roberts of London here today regarding my own S&B gun. He only knew of a very very few paradox guns that actually shot well. Most them he have had his hands on to, wheren`t accurate at all. He knew only of one paradoxgun for sure that shot well, which belonged to an American, who had experimented a lot, to get it to a useful shooting. He had been at the Lancasters here today, and had spoked with them regarding the ovalbored guns..most guns with oval bore lost accuracy after a few hundred shots or sometimes even less.

What I see here on this thread here looks very promising.