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The rifle has a generously long chamber and factory ammo is made to minimum chamber size, slightly less for the cartridges that I measured. As a result new factory brass grows about 0.014" on being fired. Dry brass will hold to the chamber walls and the growth will happen in the head area. Oiled brass will slide back against the bolt face before pressures increase enough to cause it to hold to the chamber walls, causing the growth to happen in the neck area.
I threw out over 100 pieces of brass that had case head thinning, many of them once fired (by me) factory cartridges. Of the 10 or so that I oiled before firing none of them show any signs of case head thinning. Reloads of this brass won't need to be oiled.
It goes to show that oil on your brass isn't necessarily a bad thing and I wouldn't hesitate to use a very tiny amount to stop corrosion.
That doesn't strike me as "safer" that sounds like excessive head space to me.