Is this still considered primitive? It's still breath-powered. My own video here.
https://youtu.be/4BJkZc7UseM

blow guns are 'other primitive weapons'

We don't discriminate over how technical the ammo is.

A LOT of work gone into those darts - and they are AMAZING !

You could do with some breath control training, I could tell by how long your exhalations were that you weren;t using your diaphragm properly.
You could probably doubkle the range with better breath control.

But great darts

I also love your dart building process.

These days i tend to forget how I used to make stuff - before the 3d printers
And I'm watching the video thinking: ' why doesn't he just print the tubes ?'
lol
Your way is probably more fun

These things are much heavier than conventional darts, takes a lot of effort to shoot properly. You can't see me breathing because I was so calm when taking in deep breath. Learned the method from seated meditation. And I use the tongue compression technique taught by Cheerokee natives on the internet, lost that article. All done in 1 swift motion. My bamboo darts can travel 50 metres away. The shot at 18metres in the vid, one missed dart landed around 30 metres away, found it there!

I shoot so hard that the pipe wobbles, a lot of inertia there. And I feel a kickback in my throat with these heavyweights, can't shoot them for prolonged period.

Well, my video theme is about being cheap! So that everyone can do it with minimal tools. I hate YouTube videos that says "DIY" "How to make at home!" Then proceeds to make everything using power tools, bandsaws, drill press, welding machines or even 3d machines 

Luckily I don't live in Singapore, the country below me. Everything is illegal, including slingshots and knives!