Greetings Mooseman,
It can just be a loose extractor and will vary with the pressure of the loads. For whatever reason the bolt lift is not doing its job of starting the case out of the chamber using the mechanical advantage from the bolt handle. Cases may stick as they are fired more or with higher pressure. I think you said that the loads were near max. With a tight chamber and close barrel tolerances pressure will be higher and may be borderline hot. It all adds up.
Regards Grandpamac.
Bookmarks