I haven’t tried any SG/GH pipe tobacco, but to make snuff of similar potency to KB, you would need to add a copious amount of alkalizer, probably potassium carbonate. I would start from 8%. Fresh KB is pretty moist, I never measured the water content, but it’s at least 25% (probably higher, up to 35%). Consider using fire cured tobacco and adding a splash of lemon juice or (and) a drop of lemon essential oil (not more than 1 drop per 10 g snuff). I would use 0.3 mm mesh for such project.
It is highly possible that genuine recipe calls for a combination of various alkalizers. For comparison, here’s a link to the composition of Feinster Kownoer, German snuff, pretty similar to KB (but less potent): https://service.ble.de/tabakerzeugnisse/index2.php?detail\_id=104982&site\_key=153&stichw\_suche=Kownoer&zeilenzahl\_zaehler=1
Note, water content is over 32%, total amount of salts (including sodium chloride and tiny amount of ammonia water) is close to 13%.