Papers abrasiveness is why the bore shines up with paper patched bullets and not as much with cast or copper jackets. At times lead has been used as a high pressure lubricant for steady rests, follower rests, dead centers and such. When we needed super fine finishes in the tool room we polished to crocus then a clean piece of paper towel or paper. Paper varies in thickness grain structure size and strength when you find one that works stock up on it. Alot of the old Paper patched target rifle rifling shows a radious to the rifling from mant 1000s of rounds of Paper Patched bullets over the years. I use onion paper or the seth cole drafting paper to wrap with its thin wraps good and little memory to it.