The only other data I have is limited: My wife had to have her blood analyzed for a number of years due to a medical condition. Game is 95% of our diet, the exception being when we eat out, which isn't very often. We use both lead and "non-toxic" shot and bullets, but would guess at least 3/4 are lead. The lead levels in her blood were considerably under the average for American adults.
Knew you would come thru John. Mine got lost on a old computer
That study tested blood levels, which is one indicator of exposure, but not of neurological damage that lead passing through your system causes.