I got curious and took some of the brass with the ring on then and sanded them down 1 with a electric and a few by hand with a sanding block. I measured headspace with the shortaction custom with the should angle insert. Taking them off I measured some at .001 to .0005 shorter so not crazy amount. Now these were shot from factory ammo then I reloaded them 1 time not once did I notice it til this thread so not sure it's really going to cause a bunch of issues but could be used if you had to. I will keep mine separated.