DR KLEPP
It is extremely difficult.  I have brought with me today a reference by Bernard Knight who is possibly the doyen in the world in forensic pathology.  If you would just like to hear the first sentence of his article of stomach emptying: "With one exception this controversial topic could be dismissed summarily as being quite irrelevant".  There are so many different factors that one cannot put much emphasis on the actual level of digestion of food and linking it, in other words estimating that interval.  So in other words, I found it undigested, he might have been shot five minutes after eating the food, but he could also have been shot an hour or two hours later.  I cannot exclude that.