I also have a beef with the hoof size as it has nothing to do with the head gear he'll grew, he could be a large animal with poor antler genes or even a buck in the downslide who is putting more of the nutrients to his body vs antlers at this stage in life. Some of the biggest deer antler wise haven't been anything more than average or even below average in terms of body size that I have taken. On the opposite end 2 years ago I took the largest Wt buck (weight wise) I have ever seen or harvested, he tipped the scales in the 350 live weight range but his antlers were on the downslide scoring only 150's typical. No doubt had i caught up with him a year or even two earlier he would have been much larger in the other direction!

As to the question I certainly won't even hazard a guess. A picture next time would be helpful. I will say in my area this time of year the truly big deer antlers look more like globs vs well formed points, but it really depends what stage of development they are in. I would guess he is fairly early if he is only sporting 1 antler point a side and in that case if you think his beams look globby chance are he'll be a decent buck come the fall.