I've used antler stain given to me by my taxidermist, and I've used regular wood stain. Wood stain has given me the best color with the easiest application. Just don't start too dark, because you can't turn them light again. If unsure, thin the stain before applying. If it's not dark enough, use less thinner. Use a rag on the upper antler, and an old toothbrush around the gnarly bases. Often, the antlers will take a sheen from the stain. If you don't like the sheen, rub some dirt on the antlers by hand or with the toothbrush. One last thing, you'll have to use a little lighter stain on the weathered sides of the antler, as they are more likely to take the stain a little darker. Best of luck.