I load on a 550b and had a shaving problem with coated bullets. I think the flare on the mouth was sufficient, but try as I might, I just couldn't keep them straight going into the seater die. I got a Hornady New Dimension seater die with it's floating bullet alignment sleeve and it solved my troubles. Keeps the bullet lined up as it seats it. No more shaving, and I almost never have one that doesn't go in my case gauge after. When it was shaving with my old seater die, I had a number that wouldn't pass.
$21-23 at Midway depending on whether you want taper crimp or roll crimp. I got the roll crimp because I taper crimp in a separate step and don't use the crisper on the seater die.
I just bought one for 9mm.
JT.
