I would give Hornady a call and I'm sure they can get you started. Western(Ramshot) powders has a program that they use that can give you a starting and max load for their powders.
Their load charts are also online...i'll go look them up and update this post shortly.
This is a 15 page PDF file. The 45-70 is in the Rifle section and for a 24" barrel, but you could figure it out close enough to get some starting loads.
Last edited by guitarpicva; 03/02/20101:01 PM.
guitarpicva |||||| [o] VA AC4IY ...How long will you go limping between two different opinions? If the LORD is God, follow him; ... 1 Kings 18