I saw 2 boxes of 35 remington in Cherokee at pawn/gun shop. They weren't cheap!
I always keep around 100 rounds of my hunting ammo just in case of a grain/powder change!
You can attempt to go back in the morning but chances are coyotes or hogs have made short work of the injured deer. Then again you might just find her. A High hit will not leave a blood trail as it fills the internals up before any blood is dropped on ground.
If it was me I would be sitting...