Quote Originally Posted by bassnailer View Post
So, now I must decide if I am better off with cosmetic defects on the inside of the action of a gun which shoots great, or if I want to take my chances with a replacement.
Is this really something you actually need to think about?

That is not an EDM surface finish in the pictures. Way too rough, and linear- which is a dead giveaway to a machining (broaching) process.