Hey Clem,
I've got a few spots that seem to have escaped much hunting pressure. A bit of a walk for them though. There are certainly big goats in there. However, the big stinky billies are wily and I always shoot the younger nannies first so they look big but I don't know the head measurements of them they don't stick around after a shot. More interested in eating them than heads. It's typically the loners that are biggest I've observed. The bachelor mobs seem to hold small to average sized billies.
I'll send you a PM on a spot worth checking out.
Bookmarks