I have a 308 Savage bolt action they call it a 12fv from Cabela. However the barrel is so heavy I would like to change it to light Barrel. So I looked at the Arthur Brown company offering I just want to go to 308 sports light barrel.But I realized that I have an old style Savage bolt and apparently the ER Shaw barrel does not accept an old fashioned Savage bolt. Is this accurate, or can i still use the same original bolt.