I would use a kreiger Barrell, nothing shorter than 22"...preferably 23 at the least for me ,..I would choose a 1 in 9" twist, and run it with reloader 17, or VihtavouriN160,..H4350 AS A 3RD CHOICE,..I have built 2 25 Soupers now, and they have a 1 in 10" twist, but I believe through a friend doing one on a Barnard actioned rifle, that better accuracy, for the 100 grainers through to his favoured 117 grainers ( projectiles) would be achieved with a tighter twist, if not a kreiger Barrell, a schelin,..I love the calibre, and its as good as a 25-06 with less powder,...
