Rolf, do you have/know of a link to the target ammo. I have not found such. They may prove interesting.

Daryl, as always, Thank you for the info. You have been a big help, load data wise. As well as historical and anedotal information.

I have pulled a few and will assemble a few fire form loads to get accurate chamber dimensions. Rifle as well as some components are due next week, dies the week after.