RB - I used to this the same about speed and smoothbores - accuracy and knuckle-balls. I've found size matters as a 12 or 10 bore seems to be more accurate at 100 yards, than a smaller bore size. My experience with 28 bore smooth bores is limited, though, very limited. If a .54 can manage the 8" to 10" at 100 yards - on paper for 3 to 10 groups, I'd really like to see that. The 12 will, and I've seen Taylor's 10bore do the same.
