Decent tine separation, wider than the ears thats for sure, he has height that's for sure, it's the mass that you can't see in the pictures. I am going to say mid 170's judging by those factors.
tine length is not visible with these pictures. With good forks he could go in the neighborhood of 180 but with weaker forks he could be down in the 160 range.
He's got some good G2's that give him some height but doesnt have deep back forks. Tough to see the front forks well or make a really good guess. As pointed out, deer walking away look a lot bigger for sure!
He's a decent buck, probably in the 155-165 range I'd guess from what I can tell?