I have 3 bp percussion sxs 12 ga smoothbores: a Pedersoli made in 1976 that I bought at auction in 98% condition, a Navy Arms with Pietta marks made in 1984 also bought at auction in 90% condition, and a CVA kit I bought new in 1983 but didn't get around to building until two years ago.
The Pedersoli is nicely finished - easily the best of the three, full/full choked and fits me poorly (LOP too short). Action is smooth but balance seems a bit butt heavy to me. I do not like to shoot it as much as the other two.
The Navy Arms is also nicely done, although the wood is not as good as the Pedersoli. Of the 3 guns it fits me best, but LOP is still a bit short. Both barrels are improved cylinder. Nice action, good balance, overall a very nice gun.
The CVA is the poorest finish due to a couple of significant flaws in the wood, and as mentioned above it lacks a recoil pad. As with the Navy Arms both barrels are improved cylinder. It is the shortest LOP of the 3, so it fits me worse than either of the others, but it is the gun I take to have fun. I use it for our local 5 stand Saturday morning coffee-and-clays shoots and have a great time with it. I'd love to have another.