Codster, my .50 has a 1:20 twist and I do not know of any Scout made that had a 48 twist but as I stated earlier they went though different distribution channels and probabally had some custom runs as well.
The best I can tell you is if you look at any good Black powder manual it lists the Scout as a 1:20 twist but again I am talking pre-fire production runs.
The .54 I saw breaks all the rules I know about Scouts. I never have seen one with the case hardened receiver and walnut Stock.
Boy that thing would look great on my gun rack.