What can I expect to be more accurate, a slow-twist barrel firing a patched round ball or a fast-twist barrel firing conicals? In other words, which projectile has the promise of greatest accuracy from a muzzleloading long arm, considering that the rifling is proper for the bullet style being used? Since I can't find the b.p. rifle that I am looking for, I am going to build my own from an advanced kit. I want a target-style gun with obvious accent on accuracy. I'm just trying to decide if it should be a round-ball shooter or a conical. I realize that I could get a hybrid barrel that shoots both O.K., but I'd rather have one that shoots one or the other quite well.