[jrockway]

I guess what you can take away from volume recipes is that the quantities aren't that critical. Usually your recipe will turn out quite delicious even if you get a small "large potato" or an oversized "large egg".

You're right though that you can definitely pack a measuring cup with flour and get more than you intended. Bread can be pretty persnickety too, which is why volume based recipes mention how to fill the measuring cup.