Bill I have a Hi wall that is a Mirciante 22 Blue Streak, it is apparently based on a 22 hi power. I have a chamber cast I can send you if you wish, I also have a bunch of cases for a 225 R, seems to be a rimmed 250 savage on a 30-30 case. I will send one of these also, if it works you can have the cases (100+) some loaded. Also if you check Google they have Landis' book which you can read on-line or buy it on Amazon. Best bet is to make a chamber cast of your gun and mystery is solved. Email your address if you want the cases (email is in my profile)

I learn something every day, and a lot of times it's that what I learned the day before was wrong