In my opinion it tames it pretty good.
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I don't have the FSC30 but I do have both the FSC556 and a BattleComp, I would say based on my experiences with the BC and the 556 version, that the BABC and the FSC30 would be pretty similar from the user POV. They could be vastly different standing to the side of either.
I pretty much agree. I started with a FSC30 before the battlecomp. The recoil is pretty much the same but the big difference is in the blast. With the FSC30 it felt like a little version of my 50bmg, large pressure wave. The battlecomp, while still having a shock wave, wasn't nearly so obnoxious.
My battlecomp video
http://www.youtube.com/watch?v=VUM804M0qeI
Pretty vanilla, really.
Magpul foliage green furniture, TangoDown bipod (I got it for less than half retail), and a Nightforce 2.5-10x32 mildot/zero stop in a Larue mount. Basically set up as a basic precision rifle of sorts. Something more than a DM rifle, something less than a full-fledged sniper rifle.
Haven't had the chance to get many rounds out with it yet since it's on the other side of the planet from me right now. All of the shooting I've done with it has been from the prone, loading into the bipod. I'm able to get follow-up shots pretty quickly, and it's accurate enough that I can tell I'm the limiting factor. Well, me and the ammo. (About 2.5-3" groups at 100m with surplus ammo.)
http://i.imgur.com/9LZGM.jpg
......
Mine:
http://img.photobucket.com/albums/v3...t/IMG_0933.jpg
How it shoots at 800m (875yds):
http://img.photobucket.com/albums/v3...t/IMG_0932.jpg
Haven't had much opportunity to shoot it this spring, but plan on doing a quite a bit since the snow has melted.