An issue that every responsible rifleman faces is knowing where the first round from a cold bore lands. As long as you have tested that and know where that first round goes, then a light lube in the bore is a matter of personal choice.
Lube in the bore affects bullet impact and accuracy, so the answer to your question depends on your needs...at closer range, the effects matter a lot less.
But...having said that I would avoid putting anything in the bore containing teflon, like rem lube, as it is very tenacious.
One of the reasons why stainless barrels are a good option.
