I've experimented with a shiete load of rail lubes and found that , for me, on my Recuve and compound CB,the best is a Teflon Dry Lube film spray. It doesn't attract dust mites, hair balls or other unsavory stuff. Once the carrier evaporates, which is within 10 seconds, the barrel is slick as glass. I measured the barrl with a profilameter before and after applying. It last for 40+ shots before you need to re-apply.