I have a 243 sako forester thats shot out,its groups are like 2.5 ect.stony point measured to rifleing, bullet almost falling out.Anyyways if i set this barrel back a few thousands and re ream it to 243 ya think the rifleings are ok?or should i just rebarrel it.150 bucks vs. 5 or 6 hundred for a new barrel.