Metford Rifling
One reason I think the 1917 is such a good shooter is the Metford Rifling. Five groves equal distance between lands and groves.
This rifling was developed to make barrels last longer using cordite powder. Think I remember a Metford Rifled barrel could outlast several normal four grove or two grove barrels.
Fast forward to todays accurate rifles. You pay extra for a 5R barrel target barrel. No for sure but I think this is the Metford Rifling.
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