6mm x 30-30

I got one of these in a 14" tube today at a gun show.Anyone have any info I found a little load data.I was looking for a case drawing.I found a Ackley drawing but nothing else.What is the difference,40 degree shoulder,body taper blown out?I am going to cerrosafe this chamber before I try to make any brass.
Thanks for any help.

http://www.bullberry.com/6mm.html

Patch, you might want to check E Arthur Brown website. He designed his series of Benchrest magnums on the 30-30 case and he has loading data listed for the 6mm-30-30 among others too .

Thanks for replies guys.I have found a little info so far 4895 is working pretty well.This barrel is going to be a shooter I think.