Interesting, Pierce. I don't think I would make a self bow out of juniper, no matter what the length. Too many knots, and too weak in flexion. I'd never trust it.
Anyway, this bow is 55" ntn. I was expecting to get more bend out of it, but I think I'd need to get the inners and handle bending to coax out a few more inches. Since it isn't a bow I plan on using for anything, it isn't worth investing more time. Might start roughing out some juniper tonight, though. I got some wonderful pieces the past couple weeks.