I don't know how many more people you're alienating going from 12.0oz to 12.3oz.
12.0oz you're already weeding out ~70-80% of the market.
True. Also, it's probably safe to say that most people buying a 93 would be OK with the extra weight. I'm one that doesn't have a problem with the size but is only OK with weight at 12.0 or very slightly over.