I also have FH; last NMR test showed LDL around 400. It's funny that so many people on this forum read a little about cholesterol and statins, and then think they are experts on all cholesterol issues, especially FH - we're a completely different case. Peter Attia at eatingacademy.com (down at the moment) recently did a series on cholesterol, and his main point is that particle number is the driving force of cholesterol-related heart disease. People with FH usually have high LDL, and high particle count (large and fluffy particles, but many of them). He replied to a comment of mine on his site stating that FH absolutely requires statins. If, like me, you have FH, statins were made for us. The drug industry has just been successful in its pursuit of selling statins to everyone. I haven't started taking them yet, but I have decided that I will eventually, unless someone shows me proof otherwise.
Edit: Let me add that I've seen numerous cases around the internet of people who think they have FH, but make dietary changes to lower their cholesterol to a more reasonable number. Eating more carbs, more iodine, and less dairy fat are some things you can try. However, these reports always report lowering LDL-C, not LDL-P, so I can't be sure that they are reducing risk.