Hello people, a few days ago i contacted a friend and asked if it would be possible to make non spherecial rounds for airsoft, for sniper usage.
He usually runs research & development projects for military, he is a physics engineer, ballistic expert.
So he said, something like this would work

(not the exact design, but the idea is like this)
It will be made out of teflon,
Barrel and magazine will be custom. Barrel will have micro rifling.
We will try it on tokyo marui VSR10 pro sniper, because it's really similiar to an airgun.
Unless we don't have any big problems, it should give results like these.
0.3 Weight.
400 FPS
10CM Grouping at 40 meters
Less flight time, and won't get effected by wind as much as bbs.
How it works?
1. Bullet's balance center is at it's front, it's back has a hollow body, so it's lighter than it's front. This causes wind to effect the bullet as if it has fins, when the wind blows from right, the bullet's tail will drift to left, and bullet will try to travel against wind, at the end, bullet will get effected by wind less than a BB.
2. Gyroscope effect, bullet will rotate because of barrel's rifling, it will be more stable, and will prevent bullet from spinning randomly.
3. Better aerodynamics, bullet will lose less speed in air.
4. Since bullet will be losing less speed, it can be lighter than the other sniper BBs, the energy will be kinetic, and bullet will travel faster than the other BBs, when the same amount of energy is applied, this reduces the flight time, your target will be hit sooner and wind will have less time to effect the flight path.
Fun side, it can be only seen by the shooter's side, the bullet can be black, with some orange paint applied to it's back, so the shooter will see the bullet's orange behind, but the target won't be able to do so. Same thing can work with tracers, but it would be hard to glue two materials and keep the same weight.
It will have a flight path similiar to firearm snipers, so you can use those scope notches for longer shots.
I don't see any big reasons for it not to work, airguns have been doing it for a long time, it's just lower FPS.
We will do safety tests, the FPS, weight can be changed if necessary.
We will start selling kits whenever we finish it.
Bullets will be around 8-10 US cents each, don't know about the gun kits, depends on the cost.
We have a few airsoft projects that are waiting just because we don't have the budget for them, if these give good results, friend might pay more attention to the airsoft topic.