From the link says 1:10 twist
1885 Courteney Stalking Rifle
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348751
Courteney Stalking Rifle .303 British 24" Blue Steel, C/H Receiver
$1,729
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Additional Specifications
Overall Length: 37.5″
Finish: A-Grade Satin Walnut
Barrel: Round
Number of Grooves: 6
Twist: 1:10, RH
Weight: 7.1 lbs.
Stock: A-grade walnut
Grip: Checkered Pistol Grip stock and fore-end, Rubber buttpad
The Uberti Courteney is safe with any modern commercial .303 British ammunition – be it for hunting or target shooting.