It probably made some difference in old guns when black powder and corrosive primers were used when metallurgy was not as good as it is today. And it may make some difference in a few very expensive target barrels.

Modern barrels don't need any of that because metallurgy is better, it's not black powder and no more corrosive primers unless you're buying old European surplus ammo, which is obviously not the case here. Even if it did make some difference it would be microscopic. It won't change the longevity and any accuracy difference would be microscopic.

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