This is a bolt housing made for standard cartridges. It will work with non-magnum calibers from .220 Swift to .358 Win (extractor ring not included).
The bolt housing grades at NRA very good condition. There is minimal wear on the bolt face and shaft, the metal is undamaged, and the handle bluing only shows signs of wear around the edges.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE
NOTE: While model 70 bolts may appear to be interchangeable, to safely replace the bolt in a rifle requires the action to be checked for proper headspacing and lug seating. This is a simple procedure which can be performed in a matter of minutes by a qualified gunsmith.