Totally unnecessary! Don't waste your money on it!
The description on his website is not accurate, i.e. false. A regular full length sizing die (or body die) will size cases all the way to the belt. When setting up your full length sizing die, adjust it to bump the shoulder back about .002" so the cases headspace off the shoulder, not the belt.
Yep. I did buy one years ago...never had to use it because I set my my FL dies to HS off the shoulder. I am too OVD to use neck sized brass for hunting, ha, never did that either. Its a good idea and IF I still had a 257 WBY I would use it, they bulged too much for my FL die, but I traded sold the rifle to my friend.
