Very sound advice here. Excalibur that was an exceptional explanation.
The only thing I would add to this thread is it would benefit you and anyone to research the different characteristic's of round nose and hollow point bullets. So you'll know the difference and can make an educated choice as well as being able to educate others.
Although Wikipedia is not the most accurate source of information in the world, this is a place to start.
http://en.wikipedia.org/wiki/FMJ
http://en.wikipedia.org/wiki/Hollow-point_bullet
This thread could be a sticky.