My Dad has a 340 in .222. I doubt if it has had more than a box or two put through it in its lifetime. I know it is at least 70's era, and possibly 50's or 60's. Anyone own one in .222 that they can report on? I am sure I can arrange a long term borrow of the rifle if it is worthwhile. I am kind of intrigued with it, and would likely buy the dies and start loading for it.