Shell ejection physics issue.

I'm trying to make shells eject from my gun.

I'm following this amazing's guy tutorial, and he used all the default settings.

Skip to 17:47.

His shell ejection looks much more realistic while mine looks fake as heck. I can't seem to adjust mine to not seem... floaty.

Any help would be appreciated, thanks.

 

rigidbody, usegravity, mass, no drag(or very little), no angular drag(or very little).
With this little info not much more i can suggest

 

You don't seem to use some random in the shell AddForce as in the tutorial.

Edit: I think you are looping the same shot...

 

I've played with all kinds of rigidbody settings and nothing changes the fact they seem to float out of the gun. Increasing mass only makes them drop instantly.

 

try changing the direction and intensity of the force then...