Thank you for this forum, gentlemen.
The problem with slingshots is the dependence on highly corruptible materials. And crossbows have that awkward -- cross-bow thingee. It seems like we could get the same power from coil springs. Here is a rough suggestion:
(I hope the final image is a little larger than that. If not, there is a full-size copy in my private gallery -- please have a look.)
Carbon filament springs would be lighter than steel springs, and the modern materials are ...
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