|
I've been thinking about it and it comes from the inside. It looks like it was the barrel maker who made that ring. I suspect that the barrel was rifled by a button instead of a single tooth cutter. The button is a cutting die that is pulled through the bore.
Hold the bore up to the light and see if the bore is clear. Look for lumps.
__________________
Vigilantibus et non dormientibus jura subveniunt. Molon Labe!
|