Re: .270Win Chamber too small
I use the Lee Resizing lubricant, which says on the tube; "If permitted to dry before use, it completely eliminates dented cases, a common problem with oil based lubricants." So that might be the ticket; apply a good amount and let it dry.
But I don't let mine dry, I just put a dab on my finger and apply it directly to the case. I make sure I get lube on the whole thing as I inspect it for damage. When I have it covered I keep wiping with my fingers but I remove, (or spread more evenly,) instead of apply, making sure the shoulder doesn't have a noticeable amount more lube.
When I first used it I was applying too little, (the case would stick during resizing causing vibration,) but I figured out what the right amount was after 10 cases or so. I've never had a dented case.
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