Alexrey wrote:I'm talking about ammo that you've actually used.
I tried making a dart earlier, but kinda gave up since I couldn't find any plans for ones that worked with a 40mm barrel.
Whatchu need planz for?
40mm, what could I stick down there...
A dowel stick say 1cm thick with a metal tip to keep the centre of gravity forwards, some small fins at the rear for a bit more of the same effect, maybe offset a bit for a little spin and a foam sabot in 2-4 sections to bulk it out nicely in the barrel.
...and that's all there is to it, a wooden stick, a bit of metal and some plastic fins.
You can be as paranoid as you like about the little details but that's essentially all you need for a dart.