gd I have learned to treat dealing with customer service like a job. if you aren't happy with the rifle and have a record of your attempts to get things right then you should be able to request a new rifle. it seems like a pain to deal with but really it is in the realm of possibilities.
while i would probably contact the dealer who sold you the rifle and see if they can return the rifle for a new. no ex change in funds but being a dealer they would have a little more pull.
if you want me to we can make a couple calls to ruger to work on getting you some options.we may can get you a credit towards another product or even just a new rifle unremaufactured rigfle to resell. I think you should really consider this. it's not asking too much for a company to stand by their product. the customer is always right and of you aren't happy ruger should at the very least consider ways to make it right other than the ones they have exhausted.