I've drilled 10+ grease holes in rifle stocks. Maple , ash , walnut and elm. Bit is 1 1/8 " , Forstner , with the brace square end cut off , so the bit can be held in an electric drill. The spiral on the point is dulled, so only force from the drill motor end , will cause the drill to bite into the wood. Place the stock on a rug ,on the floor , so no damage is done on the cheek side. Stand on the stock with both feet , and drill the grease hole. My preference of what to carry in the hole is , greased patches. The grease holds them in place, and when in demand , are easily removed to load the gun. Pre-greased patches are one way to speed up the loading process, w/o using a loading block. .........oldwood