Just for clarity —- when you research things....
1). A full size sizing die supports the shoulder so you can’t bulge the shoulder with it, you can push it back.. and possibly bulge The body down further in the web area but this isn’t typically a bind point.
2). A Neck sizing die doesn’t support the shoulder so you can bulge the shoulder / body area
3). A seating die doesn’t support the shoulder either... so you can bulge the shoulder with it.
the only die maker who has written information on this that I have found is Lee because people get aggressive with thier crimp dies On thier seater dies, and some of them end up Bulging the shoulder.
Bwinters - that’s a lot of work on your brass for a hunting rifle - if the chamber is actually short you could ask your smith to lap your lugs and extend you headspace a bit. Typically a smith aims for 1-2.5 thousands of clearance after the go gauge (no-go’s are 4-6 thousands larger, field gauges are almost 10... ). So if you are right at or under 1 thousands headspace clearance, it might be worth it for a field gun.
BUT.. check the seater bulge things I mentioned first... it’s typically where people have a problem...
Always back off the seating die first (do not just twist it down until it hits the shoulder and then go to town...)
Last edited by Spotshooter; 07/05/20.
