for sure Jim. I started it because a 22-250 Lapua case was pretty lose in my chamber and I didn’t wanna stretch it. Worked like a champ. I’ve got a 9.3 that has enough slop with new Hornady brass that unless I do it the first time it has enough space to make it misfire.thanks Scotty , that's what I thought .
Fellas , this false shoulder trick works on any bottle neck cartridge , not just belted cases . if you have a generous chamber , that leads to short brass life from case head separation, this sure would be worth a try .
Guys, this is a great discussion. I had also found that the shoulder reference point (head space) on new belted brass was up to .017" short. I had remembered reading about making a false shoulder, but I couldn't remember how. I will be starting to load 300 WM this spring and I was hoping I would run across it somewhere. This discussion is very timely for me. Since I have to order an expander just for this is, there a better size then the 8mm to use. Weren't there some cartridges that ran .311 or .312 size bullets? Maybe that is not enough to create the false shoulder.
Dan, you might be fine going small than .321 but it won’t hurt anything either.