What could be causing striations on the neck when using FL bushing die? Brass was cleaned and the bushing was removed and cleaned but still getting small striations. I've used the same die (whidden) for at least 1000 rounds but this striation issue just started.
Sounds like the bushing is scratched on the inside. Once they are scratched, that's it, they will always be scratched. It's from sizing on uncleaned brass, or brass that has something on the necks during sizing.