Depending on what kind of antler you are doing, ( deer or elk), and where it was killed, I use 3-4 different types of stain Early American, Red Mahogany, Walnut and sometimes Golden Oak. Start with the lighter colors on the backside of the antler to see what looks best. That being said if the antlers are dried out too much and weather checked I usually paint them because the dried antlers absorb the stain to much and you can't get the highlights or the lighter bone color back into them.