Thanks for the kind comments, btw, I am not always right and what I, along with anybody else say should be carefully evaluated, measured and challenged if need by on the basis of one's own knowledge and experience. We gain nothing in life by being yes men. A person who cannot stand respectful challenge and scrutiny probably is full of bs to start with.
The responses given above are correct--many people have wrist flexibility issues--this takes time and effort, but it can be improved. If you can scratch the back of your neck, you have the required flexibility to front squat with a clean grip. Now, often you will see a picture of someone doing a front squat and both of their hands are gripped tightly around the bar--usually the weight on the bar is very moderate-its very, very tough to do with heavier weights--watch the videos of top OL'ers doing front squats and you will nearly always see the finger tips only method. Now, I have found that you can get more of the fingers around the bar---at least on the initial couple of reps, but if you are doing more than 2-3 reps, you will find that your hands/fingers start to slip a bit and then all of sudden you become aware that your fingers are slipping and you start focusing on that and it becomes a huge mental distraction. Its far better to start with the fingertip only position and lock it into place so that your focus is on moving the weight, not your fingers slipping.
If you can front squat 400 for at least five reps, you are allowed to dump the bar on the last rep--is that not the coolest thing in the world--I have never done that but is is on my "bucket list", sort of like in the Godfather when Sonny Corleone walks up to the cameraman who is taking pictures at his sisters wedding, he grabs the camera, smashes it in the ground, then reaches into his pocket and pulls out a wad of cash then peels off a few bills and tosses them on the ground in front of the cameraman--too cool.
Keith