I am attempting to make an antler powder measure. The bit of antler I have is about 3 1/2 inches long and starts to bend after about an inch and a half down. The antler is about 1/2 inch diameter, 1 1/2 inch circumference then narrows down after an inch and a half. With my drill and bits, I have only been able to get it clean out to 15 grains. I was trying for a 30 grain measure. How big of an antler piece would one need in order to make a 30 grain powder measure? Also how do most of you make an antler measure? I saw instructions on boiling the antler, but the pithy center was real small, and couldn't cut it out.