
1) Artillery component 2) Burglar job 3) Formation 4) Grooves in a bore 5) Grooving 6) Shaping
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https://www.crosswordclues.com/clue/rifling

1) Grooving
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https://www.crosswordclues.com/clue/rifling

Helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy.
Found on
http://en.wikipedia.org/wiki/Glossary_of_firearms_terms

Rifling refers to helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy. Rifling is often described by its twist rate, which indicates the distance the rifling takes to complete one f...
Found on
http://en.wikipedia.org/wiki/Rifling

• (p. pr. & vb. n.) of Rifle • (n.) The system of grooves in a rifled gun barrel or cannon. • (n.) The act or process of making the grooves in a rifled cannon or gun barrel.
Found on
http://thinkexist.com/dictionary/meaning/rifling/

(from the article `small arm`) As killing machines, smoothbore infantry muskets were relatively inefficient. Their heavy, round lead balls delivered bone-crushing and ...
Found on
http://www.britannica.com/eb/a-z/r/49
Ri'fling noun (a) The act or process of making the grooves in a rifled cannon or gun barrel.
(b) The system of grooves in a rifled gun barrel or cannon.
Shunt rifling ,
rifling for cannon, in which one side of the groove is made deeper than the other, to facilitate loading w...
Found on http://www.encyclo.co.uk/webster/R/81
Spiral grooves cut into the inside of a barrel that impart a rapid spin to the single projectile, gyroscopically stabilizing it in flight for greatly improved accuracy over that of a smoothbore gun. of rifling design types.
Found on http://www.hallowellco.com/abbrevia.htm
In firearms, rifling is the name given to the spiral grooves cut in the face of the bore of the barrel of some weapons. Rifling imparts spin to the projectile, which provides gyroscopic stability to the projectile in flight, and thus improves accuracy.
Found on http://www.probertencyclopaedia.com/browse/FR.HTM
No exact match found.