You are not going to be able to get it to 3000mhz. It is rated at 2400mhz for a reason. If it could do 3000mhz, it would be rated that high. You might be able to run 2666, but you will have to play with the timings and it wont be worth the trouble. Intel CPUs dont scale well with high speed RAM so it is really not worth the trouble.
As far as risk, overclocking RAM is pretty straight forward. I have never damaged a stick of RAM from overclocking so I would not worry about that at all.