Rifling up until the 1800s was uncommon, there were a few weapons that were, but they were custom jobs. Most everything up to the the 1830s give or take 10-20 years was typically smoothbore. And alot of smooth bore rifles were used even in our civil war.
Most large black powder rifles, like the 1853 Enfield musket have a twist of 78 to 1, some other rifles have slightly more, some slightly less. A slow rifling twist was used for large heavy slow moving blobs of lead, plus it assisted with loading, considering the rifling was cutting during loading from the muzzle. The typical muzzle velocity for these big caliber black powder rifles ran 800 to a 1000 fps, depending on how hot you loaded her up. And then you have paper patching, another common practice, in that case, the bullet didnt realy take the rifling, the paper took up clearance between the actual bullet and bore, so usually the bullet was spinning when fired, but had no rifling marks.