What is a 170 class deer? Or 180 class deer? I hear people say I saw a 170 class buck. What does that mean? Does it mean it's somewhere between 170-179 7/8? Or is it 170 even? If someone asks me how big a buck I saw or killed was, if I haven't scored it. I'll say 170, or low 170's, or mid 170's or upper 170's. But I've never said he's 170 class. What does the class mean?