I'm not answering for Dan here but so much goes Into It Caleb that determines how many Inches that particular buck puts on. 20" to 30" Isn't out of the question.

1. Age Is the big thing
2. Harsh winters- Bucks are wore out and run down after the rut. There body's will be taking In all the nutrients and that rack might suffer from It the next year.
3. Food source In the summer.
4. Genetics- Some bucks put on much more Inches each year and have better potential then other bucks do.