Markings on Bolt

[JComer]

Has anyone seen these marking on a bolt or what they might mean?29746

[Randy A]

Close up they look like grind marks, looks like bubba didn't have number stamps... out of curiosity does the S/N end with a 4?

[1mark]

Teeth marks?? But looks more like grinding.

[John Beard]

Perhaps the number of casualties the rifle inflicted?

J.B.