So no one answered. This is for someone who might have the same problem.
Make the raycast(by chanel) from camera to get location of the hit, using that location with the location of your weapon calculate vector from weapon to target, get it’s unit vector, multiply with your desired velocity(float) and then set this resulting vector as your projectile velocity. Now the projectile will travel to crosshair. This will also work if you have gravity enabled, just the projectile will drop according to the velocity you multiplied with the unit vector and the distance to target.
This method has a flaw however- I’m working on a solution. This works perfectly indoors but the raycast won’t collide with skysphere so if you are outside and aim to the sky the raycast will return 0,0,0 and your weapon will shoot towards your world origin.
If you have any doubt you can comment.
Solution 1- check for this case before setting velocity and if this was about to happen then don’t use the raycast and simply shoot straight with weapon forward vector.
Solution 2- make a gigantic sphere with inside collision (I don’t know how to do that yet)and put sky material on it .
Solution 3- wait for me to find a solution.