light ejector swipes

[Koda]

Thinking about cleaning the edges off the ejector pin and the extractor. And dropping back .5 grains.

I wouldn't modify the gun without knowing the cause of the swipe marks. You've already downloaded the powder cahrge and the mark is still there, not likely an handload issue.

My suggestion is your rifle is slightly overgassed and the extractor is bending the rim trying to extract the case before pressure has dropped in the chamber. This can also cause ejector swipes, falsely indicating pressure. You can adjust the gas block or increase buffer weight. New buffers are as little as 10-15 bucks, not a huge investment if it doesn't work out.