I agree with those that think he looks really young...I only say 4.5 because we watched him last year.
The ranch we hunt is 2000 acres. I've hunted it for 5 years and I've talked to guys that hunt within an hour's drive north of us and guys that hunt within 30 mins drive south of us. They say the same thing: there seem to be mature deer that are smaller bodied and mature deer that are larger bodied.
I shot a really nice 8pt last year (won't post pics b/c it was with a compound). We originally thought he was only 3.5 After aging his teeth (which I know isn't 100%) several of us agreed that he was probably 5.5
Anyway, just wanted to throw that out there for some clarification. Either way, this a really nice buck.