I suspect the confusion arises from the odd name of the part - "bolt stop" - which doesn't actually serve to stop the bolt's travel. Rather its function is to discourage bolt from sliding forward (by gravity) when rifle is held with muzzle down and bolt open. This is useful primarily when rifle is being single-loaded by placing cartridge directly into chamber.Originally Posted by milboltnut
The part that actually arrests the bolt's rearward travel is called the "cut-off".
Most US Krags have a similar function provided by a pin mounted on the extractor that engages a shallow notch near the rear of the receiver. This was likely the inspiration for the '03 "bolt stop" function, though the mechanics are quite different. (Norwegian Krags have an arrangement similar to the US Krag, but slightly different in execution.)
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