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Gravel Road said
We could set up a 3D/hologram Archery set up too!

If you're thinking about the holograms from recent concerts like when they brought Tupac back from the grave, those are among the most recent advances in holograms. They look 3D, but are not. They are projections on a giant pane of glass. It appears the same from front or back only differing in that the view from the back would be a reversed "mirror" image of the image seen from the front. From the sides it would look like the edge of a pane of glass lit by a projector in a dark space.

Unless your bows and arrows are computer generated projections using a similar projection technique combined with highly calibrated motion capture of your body positioning... or at least the arrows would need to be as having a bow with subtle markers for the motion capture would aid in better calibration... then with real bow and arrow, the 2D glass pane projected hologram would be a 1 time use. You'd damage or shatter the VERY large pane of glass with your first shot.

You COULD spend the money to try to develop actual 3D holograms without using the giant projected pane of glass, but unless you did it by creating the illusion of a 3D hologram projection by wearing something that was a combination of the technologies of Google Glass glasses, and the original immersive goggles of IMAX from 20+ years ago, you'd blow thru your billion just trying to develop it and likely would not have a working prototype before running out of money... unless instead of funding it directly, you setup a large endowment fund and ran it from a portion of the proceeds from the investment portfolio returns.

You couldn't really use VR like Occulus since your vision is blocked and you'd loose your orientation of which direction you were pointing, and loose eye/hand coordination... not generally a good idea for shooting live arrows.

You could project images onto white smoke... or you could make a massive block of cloudy colored ballistic gelatin and project images onto that which is my personal favorite since then you can see how the arrows penetrated afterward.

Tupac's Hollogram

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Google Glass

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IMAX 3D Shutter Glasses AKA E3D Headset (IMAX's original glasses!)

IMAX's original glasses!