Mike said:
Would you ever take a straight down shot? Would you ever purposely shoot a deer through it's spine?
Mike,
To answer your questions, yes and yes.
There are a lot of circumstances that go into taking a particular shot like this one.
* What was/is the deer doing?
* Will it present a better shot or is this as good as it's going to get?
As far as the shot itself goes...it
MUST be practiced! Different bow set ups vary the point of impact, on a straight down shot.
MOST bows will require the use of the 30 yard pin for a straight down shot. The reason for this is that the arrow hasn't risen to the height of the 20 yard pin, as it's just leaving the bow...and it won't on this shot angle.
You're going to want to be certain that the arrow isn't floating and is sitting on the arrow rest, before the release.
Generally speaking, there's a distance away from the base of the tree, where the 20 yard pin will come back into play, instead of the 30 yard pin. Basing this off of all the bow and arrow set ups that I've owned over the years, approximately 6 to 10 feet from the base of the tree is where the 30 yard pin will be used. Anything more than 10 to 15 feet will require the use of the 20 yard pin. Different bow set ups, shoot differently.
The easy way to test this it to get on the roof of your house and place a bag/block target on the ground, beside the house and shoot it. Have someone move the target out 2 feet and shoot it again. At some point, your point of impact will change. At least you'll know for certain, where your P.O.I. will be on that type of shot.
* FOR YOUR OWN SAFETY: Don't fall off of the roof, while looking down to make the shot.
AND...don't let the person that's moving the target for you, stand too close.
Bowhunter57