The 770 is basically the relabeled 710.
Personally, I'd stay away.
They aren't an action you can readily re-barrel if you damage or shoot out the factory barrel. The actions are flimsy for sure. They're a good "entry level" or "throw-away" rifle, though. If all you need is cheap and functional, that will likely only shoot a few boxes a year, then go for it....but it's not a rifle for the long haul.
For the same price, you're getting a lot more rifle if you go for a Stevens. They're $300 at sportsmans, and they're made by savage--just don't have the accu-trigger. Great action, easy to rebarrel. The stock is a little cheap, though. Great shooting rifles.
Walmart also sells a scoped savage package for around $355 that would be leaps and bounds better than the 770, IMHO. For $50 you are getting a lot more rifle than the 770.
FWIW, one of the "popular" local pawn shops had a 770 in 30-06 on the shelf with a $210 price tag. It looked brand new. It sat there for almost 4 months before it sold--and they "gave" it away for $150. That should tell you something about quality and resale value.