Round knob, hollow bolt handle.
Plus,,
You have enlarge the pic greatly,,, then you can see the 'hitch' or step in the Winchester Mod 70's extractor lying alongside the right side of the bolt. It shows as a shadow line perpendicular to the length of the extractor.

The Remington 700 is not a controlled feed action and does not have a Mauser/03 Springfield style non-rotating extractor lying on the outside of the bolt body.
Just an imbedded coil spring powered claw at the front of the bolt face,,like a lot of .22's actually

I'll go with Win Mod 70 .

I admit to knowing nothing of Sniper rifles and optics (in general).