I'm sure this is a dumb question, but I'll ask anyway. I just started loading 38 special. My first rounds were loaded from new, unfired brass that I bought at my local gun shop. I plan on spending some time at the range tomorrow, so I bought a couple boxes of factory loads to be sure I had enough to shoot. The factory loads have a cannular (spelling?) ring, whereas the unfired brass do not. Is there a problem with reloading the brass with rings after I've shot that ammo? Do you do anything different?