I believe you are correct sir. I got irratated thinking about it around 3am last night, got back out of bed & pulled her out of the safe. Tore it apart to check fp protrusion w/ & w/o fp spring, also checked to make sure spring was collapsing properly & wasn't buckling to cause a bind. Looked good. Checked bolt face with an empty case for flush fit, appears good. Looked as best I can w/o a bore camera in to fp hole & didn't see any obstruction that could impede. All clean and ready to go again, hopefully Wednesday. If it happens again, I'll have to check headspace/ chamber depth.