I took my .45 JHP to the range Saturday, immediately after buying it. I had a few problems, mostly due to my inexperience with the weapon and being a lousy shot, but overall I'm very satisfied with the purchase. I was examining my brass afterwards (just out of curiousity), and I noticed that the the firing pin mark was dead-center of the primer in some of the spent shells, but was off center in most of them. I've never done that on other weapons I've owned or fired, so this is the first time I've noticed it. Is this something to be concerned about?