I've shot it
Oh, I've gone through about 80 rounds so far, and I love it. It has a huge noise, but you really can't hear it when you are firing it. But the people next to you sure can. The kick is extremely light, and the trigger is pretty decent for a two stage military style. I have had 2 failures so far, both due to user error. I had a failure to feed because i didn't click the magazine in all the way one time, didn't strip next round. I had a failure to fire because I eased the bolt forward instead of letting it slam, and it must not have been fully in battery or something, there was no mark on primer. Both times, i just stopped doing that, and it has been ultra reliable.
I'm not any good shot with rifles, but even I can get 2-3" MOA at 100 yards I think. I spend most of my time shooting at skeet/trap clays at that range, so I don't really know about grouping, but I can usually hit them with 1 shot (hoping to make that usual into always with the bipod and better scope rings, more training).
I recommend it, its a really nice rifle, well balanced. If you want have very small groupings at ranges beyond 100 yards, stay away. Obviously, the reciever is not bedded to stock, so you just aren't going to see spectacular accuracy like you would with a full size M1A National Match or bolt action Remington 700. But if you are at 100 yards, want something accurate, fast, and decent for CQB ,and want a round that has true put down power, get the SOCOM. At 100 yards using surplus ammo, this thing split a 5" thick piece of hard rock in half like no problem.