case necks scratched
On my their last trip through my RCBS competition sizing die all my brass came out with scratched necks. The scratches are on the exterior and cover the entire circumference of the necks. I went ahead and cleaned the die really well and ran some more brass through with the same results. Looks like i scratched the interior of the die with some residual walnut media or something.
1. Will this affect accuracy/consistency?
2. I'm considering using 1500 grit sandpaper to polish the neck portion of the inside of the die. Will this be harmful?
I'm open to ideas/suggestions/information about this issue.