That is some sweet locust Blaflair. Yeah the sapwood is tough but you'll find once thats off ring chasing isn't all that difficult. Just take your time and have a good light source to help determine where your at at all times. That piece of black locust looks so good that you could make a heck of a bow out of it. Take your time shaping it, reducing the belly and tillering when you get to it and you'll have a killer bow.
Yes, You got it right Greenman.