RE: Savage rifles
I have a Savage 110l in .308 that shoots sub ones all the time, it depends on how well the shooter(me) is doing that day.
I have owned the gun for over 20 years and the only work I've done to it was put a new scope on it a few years ago.
As far as loads for it go I have been shooting the 150g Hornaday Interlock over 46g Varget with great results. It is the load I take into the woods.
My Savage is so old it actually came with a solid hardwood stock checkered from the factory and all. Not the best woodworking in the industry but I have seen worse, much worse.