I finally got around to the 45-70 project. Got it shooting on the paper and with a load of 39.9 grains of IMR 4198 behind the Sierra 300 grain HP/FN I put three shots into 1 3/8" center to center at 100 yards with two shots touching. This was a milder load than I had before.
Hitting 2 1/2" high at 100 yards. Good enough for my purposes of a 100 yard deer gun. Plenty of kick left with this load but cases look good after shooting.
I still haven't put any across the chronograph but I suspect I will do it when it quits raining which is usually around the middle of August around here.
