Thanks for the calming advice. I figure i'm just overthinking things. The primer problem, after examining our loading references some more, seems to be as a result of light loading. The headspace gauges are on their way, just to be safe, and I'm keeping an eye open for bolt heads. now I just have to wait six months before I get to shoot it again! In the meantime, we're going to change powders and get ready for summer. Now to find myself a nice aperture sight... Thanks again.