RE: Mossberg ATR 100?
I think if you do a search through the forums, you'll find a lot of positive comments on the Mossberg ATR.
Consensus is that it's a much, much better rifle than the Remington 710, and competitive with more expensive rifles such as the Rem.700 ADL or Savage 110.
I've handled one, and was impressed with the quality. I'd buy one if they made a left-handed version of it.