Question for 357 Sig reloaders. I normally resize with the 40 die and then switch to 357 Sig die so I don't need lube the cases. I'm have issues with getting scratches on the bottom of my brass after using the 357 Sig die. I've replaced the die with a new one and it just started doing it again after sizing 200 cases. Should I switch to lubing the cases and using only the 357 Sig die? All brass is super clean (wet tumbled) as well so it's not dirty brass. This is with Lee dies btw. Any help would be appreciated.

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