In some backissues of Rifle or Handloader magazines Brian Pearce wrote up some good loading data for the .45-70.
Another book, 40 years with the .45-70 by Paul Matthews is well worth searching out. The revised edition.
There’s a thread on another forum that mwy give some insight into some funky loads, its on the .444 Marlin, but through extrapolation you can have some fun.
I’ll add it in a few.
- This reply was modified 2 years ago by Whirlibird.