I got a few boolits cast from a few weeks ago. I'm having a hard time finding data for these in 45/70. Only powders I have are IMR4198 and Varget. Going to get R7 soon so that is a possibility.
Will be using a Marlin Guide Gun and can use data up to 43,500 cup. Some Ruger loads can be used in my gun but not all. I'm going to load a dummy and see if I can get one to feed at 2.55".