As you said its always a compromise. I am waiting for a dealer to get back to me with availability on a 460 performance center. I am thinking 10". I plan to use this for hunting whitetail but seeing as its well capable I will take it for larger game (bear, moose, etc..) given the chance. In this case thats about as large as i am willing to buy just because it gets so close to a rifle. But if I am not getting the performance out of a 10" barrel 460 I may opt to go to a smaller caliber (44mag) in order to get everything out of the given caliber. I hope I am asking this question in the right way, or at least you guys get the drift.
Concentrated power is not rendered harmless by the good intentions of those who create it.