At the risk of starting a fight let me get this straight.

You stripped out the original rings(OK htat's not crazy but a little disturbing)
You hogged out the hex head on an action screw(wrong bit) or You don't know when to quit.
You shot 2 different kinds of ammo thru it and expected them to shoot in the same place?

Take the rifle to a gunsmith and have him go thru it from top to bottom, and get it as "right" as possible including floating the rear tang. This also includes having it cleaned by someone with a borescope so that you KNOW it's clean.

THEN take it out and try it..........Then have someone who you KNOW is a real good shot try it. Just a suggestion but if it's a savage with a 9 twist and you can find the components try having someone who loads load you up a few rounds of 69gr Sierra Match Kings with 24.7 gr of TAC powder. If it won't shoot that load it won't shoot.

At that point if it doesn't shoot for either one of you sell it