What are you going to use the Smoothie to shoot? It seems to me that this is the most important consideration.
For instance, if you are going to hunt Elk, do you have prior experience hunting Elk in your state? Can you get within archery range of an Elk on a regular basis? If so, then a smoothbore will do just fine. However, If shots at Elk for you are over 100 yds, I think you want a rifled .62 cal barrel, as it will give much better accuracy at those longer ranges. Now, a rifled barrel is not going to flatten out the trajectory, and that ball will slow down and start dropping a lot after about 120 yds, but the group size from a rifled barrel out at those longer ranges will be a fraction of what you will be getting from a Smoothbore shooting round ball.
Are you rather going to use it to shoot grouse, or partridge, or dove a lot instead? There's some great hunting in that Hell's Kitchen area for birds. You even have quail on some of those steep slopes that make fast action and very difficult targets to hit. If so, then, of course, you go with a smoothie, and not the rifle.
And, if you live in N. Carolina, like Roundball, you have two barrels, one of each, so you can hunt both deer and birds.
If you belong to a gun club, and do any exhibition or demonstrations shooting for the public, a .62 fowler makes a great choice for splitting playing cards in half, or splitting the ball on an axe to break two clay targets at the same time. Of course, so shooters will accuse you of "cheating " because you use such a large caliber, but they are just jealous that they didn't think of it. The public won't even think about it, even after seeing you shoot. If you learn to set your feet right to shoot both targets, you can shoot them using the .62, or any smaller caliber gun, and maybe win some money from those challengers. I have been known to " borrow " a challenger's gun and split a card with his own gun of a lesser caliber than my own, just to embarrass him.
To learn how to make those trick shots, and be a better shooter, see my article:
[url]
www.chuckhawks.com/off-hand_shooting.htm[/url]
Have fun.