If using your neck die, get a Redding body die and just bump the shoulders back very slightly when the cases start to get harder to chamber.
I'm still on my original batch of Lapua .308 cases some of which have had eight pretty warm loads through them with plenty of life yet left in them. Using a Redding type S bushing neck die with no expander which helps by not oversizing the neck and also gives less run-out.
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