easy on the drawbore, easy on the taper
lots of drawbore, lots of taper... like the proverbial nun's you know what, you have to start small and ease it in there(don't forget the lube....). If it breaks, knock it out with a 1/2 bolt anyways.
I don't know if the ash you're using would be sapwood... the outer wood is best in ash is all I know.
