Wes you will know a shooter when you see him...your knee's get kinda weak and you stare at him in awe and go WOWWWWWWWWWW, FORGETTING YOU HAVE A RIFLE WITH YOU.

really all joking aside a good 160+ deer is a buck thats been around a few years so your only going to get a glimse of him during morning day break or at sunset, unless he's chasen a "really hot doe"
Like skeeter say
MASS MASS MASS if you glass the buck and his rack is not out passd his ears or stretchn out to his nose....well then he's a nice buck but no booner. Although it may be difficult to judge out at 200+ yards picture this

If you figure he's thick say like your wrist or has high tines and lots of points he's a shooter. but only you can judge what your going to call "your trophy"

Happy hunting