The parachute dart video was cool.
I have a couple of ideas(pictures below) I can't explore because I don't have time and I was wondering if anyone knows of more developed versions.
the general idea is to get more acceleration from big diameter pipe and lower drag from smaller cone/fletchings, for longer ranges.
the top is a plain dart paper cone
the middle is cone in cone. Small cone sits on a bigger cone the drag of the big cone slows it down faster and detaches, resulting in a lower surface area dart.
the bottom is a nail with tiny tape fletchings that sits twisted in a cone.the cone is air tight with extra tape inside. fletchings are supposed to have even lower surface area and drag than a small cone.
I tried them @2m the third dart doesn't always detaches and I'm not really sure the second detaches before contact with the target. I wonder if they will work at 5-30m. Maybe one day I'll test them on a low pressure airgun
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LKH9 do you have a video on something similar that I might have missed? it would be awesome to see sabot darts in action