In the end, the 710 is a dead end. It may be a beginner's rifle, but it is the beginning and end. You cannot get a 710 and make it nicer down the road. It is what you can get, and it is more expensive than other beginner rifles while at the same time, much cheaper construction. At the same price as the Savage 110 with accutrigger and the same quality (if different manufacture) scope, the 710 is very clearly inferior, if only because it cannot be re-stocked or rebarreled down the road. And, while you very clearly got a lemon in the savage, such rifles are not routinely 4-6 MOA shooters. They are known, for good reason, for being accurate, if not elegant, shooters.
So, the question is, is a fellow well-served, for the price of $300 retail, in buying a 710? It may work for him, but for the money he could get much better. Mild steel versus ordnance steel, 100% steel receiver versus steel with plastic inserts, machined tang safety versus stamped (and very small) side safety, large aftermarket support versus no aftermarket support, replaceable barrel versus non-replaceable, and, very importantly, still in production versus discontinued and replaced with an updated version of the same. Even Remington seemed to realize the 710 wasn't all that great.
Ash