Del, not it. Though that answer would seem more plausible than wet v dry, or dry v seasoned. My pea brain cant reconcile a 30lb increase in roughly 6 months. I finished the bow and posted on here in June, but then shot it a bunch all summer. Eye opener for me. Obviously it's either wet v dry or dry v seasoned and it can make that much difference in that short of time on certain pieces of wood. Very dense pieces are affected like this according to Patrick. In thinking back on this piece of wood as I was working on it, it is thin ringed, high crowned and I was particularly taken with it once I started working on it. It didn't seem to be unusually dense from appearance, but it did perform exceptionally well. Started with 3 inches of reflex and settled at 2 which it still retains. The inch it lost is not noticeable as it is spread out along its length, so maybe more dense than I suspected. I'm gonna take Badgers advice and see what happens today. Keep you posted.
PatM and Pearl, seasoned v dry are two different things and I recognize that. Big difference at least as far as Osage is concerned and I suspect other woods as well. But I think of seasoned as in years to see a noticeable difference not months. My thinking may change now.
This wood was not wet (green). Wet wood feels different to me when worked and anybody that has drawknifed the two know what I'm saying. Dry wood is hard and seems more brittle, wet slices like cheese.