I have what sounds like the same general rifle in .45-70. It is half octagon half round, stock has brass buttplate. Weighs about 11 pounds. Navy Arms stamped on the barrel and Pedersoli on the under side of the barrel. It shoots pretty well with a vernier sight but I had to shim one side to get it to shoot consistent groups. The sight is kind of cheap on mine and a barrel mounted peep sight was much better for what I use the rifle for. I paid $600 for it a couple of years ago. I like the action, works very well, and with 500 grain bullets and 70 grains of FF it shoots better than some of my other black powder rifles. I don't see any reason not to get it if you want a rolling block action.
