When I said check doe groups, you really need to be on the group at prime time every evening on the travel routes off ridges coming from higher country. 4th season is still pre-rut, and big bucks will cruise through them, but won't be stopping long, then he will keep on going. He might be making loops, or he might be on his way to winter range. Hot weather will have them higher up, snow will have them in their usual winter range.
A 24" 4x4 should be a 160" deer - a great buck in anyone's book - or it could be a 180" deer. Spread means almost nothing for score (if you're into that)... I would shoot that unless you're 100% confident in finding him again the last day, or you're okay with eating the tag.