I guess I don't see anything wrong with either picture?
The half moon at the top is the front of the breech, the sides of which are cut for the bolt lug race ways, then when the bolt passes and turns into battery, the locking lugs on the bolt lock against that half moons at top and bottom. You can barely make out the "cliff" edges of the bottom half moon.
Perfectly normal to me. Hope the price was good, I'm sure the action will be - it's a Savage Precision action afterall.