RE: Will #6 lead kill at 40yds?
#6 will kill them stone dead at 40 yards. one pellet in the brain/spine will put a turkey down (even though we should all strive to hit the head/neck with as many as possible) so I believe the more pellets you put out in the pattern the better. There is something to be said for smaller size shot losing energy quicker but i think at most reasonable turkey ranges any difference is pretty much negligible.