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Rifling is the term for helical grooves machined into the internal surface of a firearm's barrel for imparting a spin to the fired projectile to improve its aerodynamic stability and accuracy. It is also the term (as a verb) for creating such grooves. Firearms without rifling are called smoothbore.
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barrel twist projectile bore rate bullet spin accuracy throat length inches chamber rifled diameter grooves projectiles muzzle used firearms barrels
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Rifling | is a | term for helical grooves machined into the internal surface of a firearm's barrel for imparting a spin to the fired projectile to improve its aerodynamic stability and accuracy | 0.90 | text |
| Rifling | is a | constant rate down the barrel | 0.90 | text |
| spherical lead balls require a very low twist rate | instance of | large-diameter projectiles | 0.80 | text |
| such as 1 turn in 48 inches | instance of | large-diameter projectiles | 0.80 | text |
| chemical reaction or heat from laser source to etch the rifling pattern | instance of | Using non-contact forces | 0.80 | text |
| Rifling | related to Design | Typically | 0.60 | section |
| Rifling | related to Design | However | 0.60 | section |
| Rifling | related to Design | Since | 0.60 | section |
| Rifling | related to Design | Rifled | 0.60 | section |
| Rifling | related to Design | Differences | 0.60 | section |
| Rifling | related to Design | British | 0.60 | section |
| Rifling | related to Design | Winchester | 0.60 | section |
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