Thanks for the input. I was hoping to have actual results from shooters. I KNOW that there are people on this board who own or have owned them. I looked in the Greener book and most of the targets are from short to medium range. Greener also states that the rifled gun was fairly accurate to 120yds and the smoothbore to 60. Ipresume that this was for the bores besides 8 which he wrote about the most.
I am currently trying to decide whether to try and push round balls as fast as possible or to go with a 500+ grain slug and keep it moving slowly.
Not trying to make a 20bore into something it isn't though, just better than as it is currently offered.

Thanks

Tom

Carbonation without fermentation is tyranny