As people said above, you should be pretty much dead on. Here is a link for one of Winchesters Sabots that has a decent chart for you.

http://www.winchester.com/products/c...2&bn=16&use=24

Personally, I'd "Bite the Bullet" and set up and take at least one shot through at at 20 yards or so. Im sure it will be dead on but im you sure would rather waste a few bucks on a shot than spend an extra few hours blood trailing a deer.