http://en.wikipedia.org/wiki/Dum-dum
Hollow point bullets literally have a hollow point, and ball ammo does not.
No
No, they are not.
Yes, you can find a wide variety of readily available 9mm hollow point bullets and ammunition.
No, they are not.
yes
No
Yes.
No
yes
Yes
Yes, Hollow point bullets are legal in Nevada. However, amour piercing bullets for pistols are not. Also, if you have tracer bullets (pistol or rifle), you cannot fire them on the open range due to fire danger.