How did this happen?

[Doco overboard]

I included a picture of a cut off Krag stock that I was going to pair this old phenolic tip to. Once I was able to square and cut to make the join I could see this old oil or grime line evenly spaced and to an even depth.
Anybody ever see this before? Was just wondering how it may have occurred.
Thanks for any insight, thought it was pretty interesting and maybe someone would have an answer.

Attachment 99868

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.

[browningautorifle]

It looks like part of the tip is still present.

[rcathey]

It looks like part of the tip is still present.

That’s what I’m thinking. That’s verrrrry uniform for simple oil seepage.

[Doco overboard]

The plastic tip is off an old Bishop sporter stock. The other piece of wood is from a sported Krag full length rifle stock cut off a long time ago right where the band would seat.

I never used the plastic because it was too narrow and would have required too much slimming of the fore-arm to look right.

At any rate, I had another piece of walnut that was fixed to the Krag stock to stretch it out some for the barrel I was working with but never seen anything like this. It's almost as if whatever sort of finish that was used was forced into the wood under pressure.

I attached another edited picture of the Krag stock that shows the finish that was on it before I scraped it off. It peeled right off with a razor blade and gave no indication that it was any deeper than just laying on the top surface of the wood.
Attachment 99871

[browningautorifle]

Is it too late to get other pics, closer and from different angle? It still looks like the edge of the cap cut off...

[Doco overboard]

No other pictures because I put it all together last summer. But you can see where it was being scraped and the approximate depth on other parts of the stock.
I wonder if it was refinished at some point and cut with gasoline or some other type of solvent that penetrated that deep.
I'm guessing stock channel down and brushed on until someone figured out they have to cover the whole stock or maybe pushed down to the bottom of a vat and skipped over once or twice.
I cant figure it out, looks like epoxy or something to me.

Attachment 99907Attachment 99906Attachment 99905

[browningautorifle]

Hard to say now...

[Roy]

Looks to me that if the stock was cut at the sling band, the dark line is where the step that the band sat against was. Oil and dirt seepage into the end grain could create that effect.