Hey John how are you doing! The bows that I've made out of juniper heart wood have all failed during tiller,violently. The bows I've built out of mostly and all sap wood have been fast and resiliant shooters. My sons 50# bow will out cast my 75# osage I built in John Strunks 2001 class. The heart wood seems to me that it has fair compression value and no tension value. I have a couple staves I hope to work out this winter let me know how it works out for you, I'm interested in your opinion of Juniper. Oh and I definately vote for limbs as the trunk seems to have a looser fiber. Though the first one I built was from a trunk I called my bowstill , long story. It was all white wood and the grain was turned side ways ran from belly to back with no backing and drew 50% of it's length. I clearly had no idea what I was doing, I chalk that one up to crap house luck. Hugh.