I purchased a new Savage 110 Elite Precision in 6.5 Creedmoor and it came in with a black spiral fluted bolt body rather than the gold bolt I've seen in ads and on other such rifles. Their advertising does say bolt body color may vary with production date, but says nothing about some being fluted. Its serial number is R10XXXX. Is this a newer or older production rifle? How do I tell its production date from the serial number? The bolt serial number does match the reciever.