Well holy smokes, I was in the garage today, and for some reason decided to stick my bore scope down the barrel with a case in the chamber, well THAT was an eye opener!
Even the cases I thought were long enough weren't, and most were short by a big margin.
Sooo, I dug out a bunch of 45/70 cases I had and sized them down and trimmed them until the matched the chamber when I had the scope in there. The range session today went very well, using lubed greasers, powder coated greasers (unlubed), and the PP bullets as well.
One paper ring in 35 alternated rounds, and it may have been because I was not cleaning at all in between shots, shooting five at a time.
I think I will still use the greasers for hunting this year however.
David