Ill echo like a parrot. Its often harder to OC via the BCLCK but in the end its all about one thing multiplied by the other. I was able to get one 6700K to 4.8 GHz by using a 200 BCLK and 24 multiplier but couldnt get it there and stable with 100 x 48. You memory and its multiplier will play into the equation as well, everything else if Im not mistaken is locked at 100 MHz.
Just FYI, its not considered stable unless you can run it at a particular setting, pass stress testing and boot without event.

“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein