Take a look here, @Huff-N-Snuff: Recipe for S.P Scotch: a primary snuff made by Messrs. Taddy & Co. This works great with same amount of salt instead of alum and same amount of calcium hydroxide instead of quicklime. Scroll down through that discussion thread for composition by ingredients mass fractions (%) and lamina to stem (mudrib) blending ratio.
Also, do take a look at this thread: Old snuff recipes.
Then, quite a few great tried-and-loved recipes, including some industrial formulas (fine dry Maghrebi rustica snuffs - neffas - come to mind), are posted on this thread: Snuff making 101 - #272 by volunge.