If we are talking about Dennis Campbell's Alabama Whitetail record book, then for gun it takes 150, but the scoring system there is more liberal than B and C.
As it should be. What he grew is his score (imho). Gross score is what the deer actually is, the way I see it. A %$#@ "net" score is for people with their underwear on WAYYYYYY too tight. Never understood that. It's not a dang horse or dog show where symmetry makes it any better. Screw that