When I was trying these tubes first time in the basement, distance was 10 m.
Then these tubes felt more like just nice.
After shooting outdoors (distance 20 m) these tubes are now WOW.
2040 looped tubes works very well with 9,5 mm & 10 mm steel ammo.
Good tubes and enough speed for my shooting sessions.
Videos:
Really nice bandmaterial.9,5 mm steel ammo and 20-15 tapered bands. Draw is so smooth and light and seems to give good speeds too.Shooting video https://youtu.be/4_NAaEgtjU4
Perhaps the best slingshot frame from Dankung.
Good pinch grip makes this feel much better, than other looped tube shooters.
Two shooting videos: