I have reported before - comparing Nickel Plated and Yellow Brass / Federal Gold Medal / 308 Win with moderate pressure loads ... I could rely on 11 reloads with NP and 13 reloads with YB with no split necks. My “theory” being that the NP is harder (less pliable) and is more susceptible to work hardening. I observed no visible evidence that the NP was thinning and getting into the bore. Consistency was fine so no reason to believe the NP had any negative effect.
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Old Guys Rule
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