Mike,
I agree with everything you state. I have a 270 Gibbs so I know there are many variations that have been done by gunsmiths over time sometimes to be different or improve ballistics using some other rounds brass as a start. If I can't ever get positive confirmation of this round, I may call it a 62.78 Mike. What are the chances of coming up with data of every known rimmed cartridge produced in Germany in the time era that this gun was made? I see there is possibly one book, out of production, that may have this data. Thank you for all of your guidance. Merry Christmas. Tim
