Today I attempted to shoot a new out of the box TC pro-hunter 50 cal, and couldn't get the breech closed. It closes just fine, nice tight click into closure, until you put the primer in. The primer does not go in quite flush, and that seems to hold the action from closing into battery. Maybe .005 or so, barely enough to see. Tried sombody elses spent primer and it wouldn't go in far enought either. This is a unique system with the extractor for the primer, and I have no expertise on this. Help???