It's sad but elm, is overlooked when it comes to constructing bows. We hardly ever see it used in the risers, and it can be a challenge to get smooth. given the characteristics of the growth rings. But if you really take the time to look at it closely it has some really cool effects to it. Additionally for use in limbs it's hard to beat. It's light but durable, and fully recovers when flexed and released. And if you cut the lamination out of the right board it even looks good if you use clear fiberglass. The fastest shooting bows I've made all had elm limbs and I haven't had one break.