As requested, here is an explanation of which chart will be used to determine hit location.
![Hit Location Diagram Hitlocation](https://2img.net/h/i288.photobucket.com/albums/ll189/ehoffm1/hitlocation.jpg)
When you fire on an enemy a big arrow will light up between you and your target. The hex just before your target determines which chart is used. Torso twists do not count.
If your target arrow passes exactly along the line between the two, the most favorable chart for the target will be used. If your target arrow passes through two hexes, even by the tiniest amount, the most favorable chart will be used.
Front is considered more favorable than side which is more favorable than rear.
Hope that helps.