I have those two guns, a Mossberg atr 100 in .270 win and a model 88 12ga, both have been good guns so far. I'v gota few boxes of ammo through the atr 100, i'm impressed with it, I half expected a .270 to be somewhat painful to shoot but they put a nice recoil pad on it, and it seems pretty accurate so far.

We'll see how it does when I go deer hunting this fall for the first time.

I haven't been able to see what it will do 100% accuracy wise, I didn't have a good rest when I sighted it in at the cabin I was having trouble keeping steady. But one day i'll get down prone and see how accurate it really is.