My hunting partner, and fellow TG'r (BBassi), last year took a deer with a stone point.  His deer dropped in its place, and he can't yet understand why as it was a typical chest cavity hit (dlung/heart).  That is the only one I am aware of that fell on the spot without a spine/head shot.

Walk/run then fall.....that is opinion

BobW

The only deer I have had drop on the spot from an arrow were somehow hit in hte spine.  However since I started using single bevel BH's....mostly Grizzleys sharpened to s shaving edge.  My recovery distance has been almost nill.  Watching most drop or at least go into a death writh before going out of sight.  Never had a perfect doule lung drop with an arrow.

Mike,
with all due respect to your campmate,if he thinks deer that are double lunged drop instantly he doesn't know anything about bowhunting.

The only way a deer drops instantly is if its shot in the spine..and then it isn't always dead,just paralyzed to some extent-partially or full..depending on penetration into the spine.

An arrow kills by collapsing lungs..that doesn't make a deer pass out instantly..it takes time, as you well know.

I agree,Spine shot yes.Lung shot run and drop.
Mike, do I know who your talking about?

Run and drop  !!!!  It even makes a difference as to wether or not the deer is inhaling or exhaling at the time of a double lung hit..  If he is inhaling, he can go further, exhaling,not as far.....  Jim