With my new rcbs 45 dies, they suggest that the die should just touch the shell holder. I was surprised by that, because I could have sworn that I (at least with rifle dies) the die should never touch the shell holder. I have on hole that is tighter then the rest on my new blackhawk, proceeded to clean out the cylinder using steel wool wrapped around brass jag chucked in a drill.
Is this brass you have new or shot out of a different weapon?