After working with action using tex10 suggestions, discovered problem. Head space is correct. Switch barrels many times. Bolt head and extractor brand new. Not a head space problem, it is a bolt head problem.

The PTG is being replaced. Using two working dummy rounds in 70 & 100 grain seated to manual specs, used in three other savage rifles/barrels. No room to bring cartridge into chamber from the mag. It's not extraction, it's too long a bolt head either due to PTG or an adjustment on bolt.