I got the Green Mountain .62 caliber smoothbore for my Renegade. I really do not see the value of the .54 caliber smoothbore other then for squirrels or small game. I figure with the .62 I could turkey hunt and still load it down for small game as well.
It shoots shot reasonably well. Out to 25-30 yard I think I could knock a turkey off their feet. As for roundball, well the best group I ever shot that I considered hunting quality was at 43 steps. I tried shooting 75 yards like some of the smoothbore shooters claim to do and could not keep them on a white paper plate off a bench rest.
I've tried about every combination with a roundball to get them to shoot accurate. That does not mean I am not going to hunt deer with it, I have a spot where the shots should be under 35 yards, and at that distance, I know I can do it...