Just got finished resizing and decapping my once shot brass and noticed a series of ridges around the shoulder of my Win silver colored brass and on the regular brass. Whats up with this? Was using RCBS water soluable lube and a Co-ax with Forster dies on a 270Win. Its my first atempt at this procedure. Just got in some Imperial wax so I will start using it instead. Also just ordered up a case guage. How do I get these ridges out by resizing or is it ok to load these up? Thx.