After hunting was called for rain, I went to the range and shot up all the loads I had with me. The 45/70 barrel likes the 39.5 grains of 4198 and a 405 grain cast bullet, but the gun needs work.
When my groups were good, they were very, very good, but a change of hold and especially pressure on the forend, would open them up...sometime a lot.
I had on unbelievable 1 hole, 3 shot group at 50 yards but most looked like this 100 yarder.