Lt,
To expand on my previous post. The "J" with the eagle on top, is a repair proof mark, which would explain why it looks newer than the others. The "N" with eagle on top, was probably done at the same time. I wouldn't be surprised if the 9.3x72R marking is also new. I'd definitely slug the bore. If the 118/35 stamp is correct, and the bore diameter is around .340 or so, then the groove diameter is probably closer to 9mm(.358") than to 9.3mm(.366"). In which case, you could use cheaper, and easier to get, .358" bullets. Not at all a bad thing!
Jeff
