44-60 bottle neck

[Nuclearcricket]

Thanks Don, I do wonder if it was perhaps chambered in a Rolling block at some point. My thoughts are like you that it might make a good shiloutte round. I don't think the reformed 348 cases will hold tht much powder but once fire formed it might come close. I was thinking something in the 400 -450 gr range ppb would be good all around for most anything and not make a lot of recoil either.
I am working on a hepburn action and have a barrel, so things are still in the planning stage but I do like to be fully informed before I take a plung.
Sam