Myths:
1) Individual muscles can be shaped (or you can control the shaping of individual muscles via training). Muscle shape does change but within the confines of genetic blueprints.
2) You need high amounts of protein to grow rapidly. You need what you need, but it probably isn't what you think it is. 250 grams for a 180 lb. guy is excessive in my opinion. During my best growth spurts I don't think that I consumed more than 190 grams at a body weight of 215 lbs., and even that I think was too much. I now consume 150 or so grams a day and maintain 205-210lbs at single digit body fat level.
3) There is no such thing as a natural competitor. There are still plenty of people who compete without drugs, as there are many that do it with drugs.
4) High volume is the best way for a natural to build his highest level of muscle mass. As you get stronger and closer to your genetic capacity, shaving off sets from your workout will generally allow you to continue responding to training. Harder, heavier and more frequent training takes more out of the body, a reduction in exercise volume will allow resources to be left over for super-compensation (growth).