Originally Posted by
bpd1982
You could try an RCBS #2. It is used for 6.5x55 brass that is slightly larger in the rim.
Like trying a RCBS #2, the Lee shell holder is their #3.
When ever I've encountered your problem with a rim I've often used my bench belt sander to deal with the problem.....a quick rotation of the brass rim on the belt does the trick for me.
Have reloaded 7x57 mauser for a number of years now.....one of my favorite rounds to shoot. Don't think I've ever used any Seller&Bellot brass before or their ammo for that matter. Personally, I use a lot of Prvi Partizan brass for reloading. Its decent stuff and reasonably priced at Grafs and Sons.