1. After the 'swept back' bolt-handle came into use on 1903 Springfields, following WW1, why were some later bolts made with 'straight' bolt-handles? (I have a new looking "R" marked bolt, that has such a handle).
2. How much clearance should there be between the rear of the 1903 bolt 'safety lug' and the receiver?
(My Springfield Armory 1903A-1 and Remington 1903A-3 rifles have .042" clearance between the rear of the 'safety-lug' and the edge of the receiver wall. This is about the thickness of a Dime.
By contrast, the safety-lug on my 'straight-handled', "R" marked, bolt makes contact with the receiver wall, when the rear of the front locking-lugs are in contact with the receiver's 'locking-lug recess'. BTW - I have not used this bolt for firing ammo).
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