For anyone looking to use a transparency overlay to replace existing hit location tables, here is one:
https://www.dropbox.com/s/to5k9tuwz6...erlay.png?dl=0
https://www.dropbox.com/s/qrjcpckx88...ample.png?dl=0
Hit locations are shown as a dashed number N-M. The first number before the dash is the margin of success. The second number after the dash determines the precise hit location, using a D3, D6 or D12 as required.
Succeeding by 9 or more hits the precise location being targeted, succeeding by 7 or 8 hits one of the next three closest locations, succeeding by 5 or 6 hits one of the next six closest locations, and so on.
To use, place transparency overlay on top of an appropriately scaled image or drawing. The image in the example is from Friday Night Firefight, copyright R. Talsorian Games.