In response to the question I would shoot a B&C buck with a rifle. I am also a multiple weapons hunter(bow, rifle, shotgun, and blackpowder) so I think that using any weapon to end the life of an animal is ok as long as it is done legally andwith great respect to the animal.
I deeply respect that you have a set of values that you cling to wholeheartedly and God bless you for that. Your heart is in the correct place and more people should follow your example!