My very un-expert opinion would be at least 3 1/2, maybe 4 1/2... Looks like he's got some decent mass on his rack... Looks like he's beginning to get a sag to his belly, but his back looks nice and straight still.... shooter buck in my opinion
"When a hunter is in a tree stand with high moral values and with the proper hunting ethics and richer for the experience, that hunter is 20 feet closer to God." ~Fred Bear