My personal thoughts. Just use what you have in your stash and don't think that somehow perfect rings don't make a good osage bow and don't get paranoid about what the ring ratio or "lunar" rings look like. I've made at least 200 osage bows with every grain configuration you can imagine and in the end they were 200 osage bows just the same. I'm not discounting anybody's comment's or thoughts, just don't get out on a cliff edge for nothing is what I'm trying to say. Build bows, have fun and shoot those bows.