I really thought my first serious flint build was going to be a Southern Poor Boy rifle, but somehow I got side-tracked from what I considered my dream rifle and recently started up with a Pennsylvania Long Rifle in the Jacob Dickert configuration. I have already purchased a non-inlet pre-shaped stock, and just ordered a Colerain barrel and flared breech plug in .45 caliber at 13/16" dia. straight octagon with the 1 in 56" twist. I intend on doing this build in short sections as my finances are limited to buying only a few parts at a time rather than buy a whole kit. I for the most part am confident in my ability to carve the inlet area of the lock and for all the other areas of the stock that need carving attention. Since this is a slow build and the stock has no lock inlet yet, I still have time to decide what kind of lock to use in this rifle, but I will probably most likely stick with the Dickert lock. Perhaps after I finish this build, I will get to the Southern Poor Boy starting from a stock blank rather than something pre-shaped. As far as the barrel is concerned from what I understand the rounded rifling grooves on Colerain barrels are supposed to make them easier to clean. I am not sure if it is true or not, but one of the other sale pitches I have heard on these barrels is that patches might make a more complete seal into the rifling. What advantages or disadvantages might the Colerain barrels have with the 1 in 56" twist compared to slightly slower in 1 in 60" or 1 in 66" twists?