Don' t count on it, slugs can do strange things after contacting or even busting through bone. Nobody can accurately predict which path it will go after bone contact is made.Granted, shoulder breakage is almost 100%, but after that it' s a guessing game. I' ve accidently hit deer in the shoulders when quick shots were needed[ deer leaving town in a real hurry], and always hated the fist sized or bigger exit holes,just a waste of meat as far as I' m concerned.[:' (]
By the way, I' ve never had a deer move more than 5 ft. after a good double lung hit, most drop on the spot, never to move again. 180gr. coming out of a 30.06 is a fantastic thing[8D]