I bought a 10T-SR a couple of years back chambered in 6.5 Creedmoor. It had the same problem as yours. Mine was so bad that there was basically no rifling for the last inch or so. Also had unbelievable marks left from the reamer for the whole length of the barrel. Turned me off Savage for a while. I took a gamble and picked up a 12FV in 308 a couple months ago, ran the bore scope down the barrel and it was night and day difference from the 10T-SR.

Must be the luck of the draw.