Jmoore,
You are spot on about the wax I think. The wood was gone and the barrel exterior is in really poor shape. The nasty black paint saved the receiver. However, the bore is perfect. My project will make the poor looking barrel a moot point. It is nearly finished, so I'll share it very soon.

A6BN, thanks for confirming the 513 bolt configuration. I guess I'll just have to man-up a bit on my bolt