What ^ said. If you want to pay for lead, shoot the Longbeard 5's for definite knockdown past 40 but if you misjudge a little the LB 6's should definitely do it. If when you misjudge you do so by say 10-15 yards then I would go with the 5's. The 4's can be nasty as well out further if you misjudge that much, but that is quite a bit. That's if you want to stay in the lead price range. Hevi 6's will keep pace with those 5's usually and possibly a bit further. Never used the 7's so I can't comment on killing power. The 4x5x7's I have never used but if the pattern as good as the rest and, again, you want to spend the money then no issues there for the same distances. I have killed with hevi 6's well past what we are allowed to talk about and have seen the LB 5's and 4's do the same. But if you are great at judging distance and also strict to the 40 yard rule, as SumToy says, how dead is dead? Many a load out there can handle that job for a lot less (HV/Supreme XX #5's and 6's, Super X #5's and 6's, etc). I run an old Remington Hevi #6 in the barrel backed up with LB 4's just cause I like seeing those big ol holes in the paper, knowing good and well the 5's land a few more on paper. That and I have been known to misjudge the open woods/field distance.