DD15 liner? Need someone to offer a good explanation!

[Squish099]

(03-11-2020 )Nilao Wrote:  That's hard to say. I wouldn't that be a broken ring would notch the liner like that. Usually a up and down score....that would almost have to be a manufacturer defect.

That's what I was thinking. It's to symmetrical to be an accident. Almost looks like the cylinder hone at the factory had an accident, and the assembly tech said f' it.