Hey Daryl, i cast up some .690 rd. balls yesterday after my mould arrived. I took some out today to try in the Navy Arms double barrel. I decided to try the left barrel first. I loaded 90grs. of RS, an over powder wad and fiber cushion wad, and then the rd. ball inside a Win,AA plastic shotcup that i had cut the cushions off from and shortened to just less than ball length. I seated that and then put an overshot card wad on top. Good thing i went with the .690 ball and not a .715, as they are a real tight fit in the cup in the bore. Anyway, the first shot was dead center for windage and about 4" high at 25 yds. Not bad i thought, lets see if we can do that again, so i loaded her up again and the next shot just made the first hole a little larger. I says, ok, this is looking good, lets see where the right barrel hits. Let my mind wander, i know, but it happens when ya get old, and poured powder down rt. barrel, seated overpowder and fiber wads, and then seated the cup and ball down the left barrel. Knew it as soon as i did it. Thankfully rd. balls pull pretty easy out of a smoothbore barrel. So then i seated the ball on the powder in the rt. barrel, and it opened the hole up a little more. All shots in the same large hole from both barrels. Both barrels are right on at 25 yds. Going to do some more experimenting at 50 and 75 yds. but most of my shots are less than 50 yds., so i think this thing will get the job done for me. Who needs rifling anyway. ::