welcome to PA,,as parnell said there is a lot of experience and skill the guys have here on this board,, myself i would choose the water buffalo horn as my first choice,i have built many horn composite bows and the asian horn is hard to beat,,osage is not the greates wood for a horn bow ,hard maple ,hophornbean and hickory are much better woods for a core, i have thought about trying it myself but the chance of core failure is too great,a large wast of horn, sinew ,glue and the time involved in building such a bow... but if you succeed, i would like to see it... i hope you have great success...... james