Firearm purchases require a background check and must be picked up in person by the purchaser
SBR transfers will not be accepted 
Production history
Designer
Browning & Winchester
Designed
2002
Manufacturer
Winchester
Produced
2003–present
Specifications
Parent case
.300 WSM
Case type
Rimless, bottleneck
Bullet diameter
.224 in (5.7 mm)
Neck diameter
.272 in (6.9 mm)
Shoulder diameter
.544 in (13.8 mm)
Base diameter
.555 in (14.1 mm)
Rim diameter
.535 in (13.6 mm)
Rim thickness
.054 in (1.4 mm)
Case length
1.670 in (42.4 mm)
Overall length
2.362 in (60.0 mm)
Rifling twist
1-7 in (180 mm) to 1-9 in (230 mm)
Primer type
Large rifle
Ballistic performance
 
 
Bullet mass/type
Velocity
Energy
40 gr (3 g) BT (boat-tailed)
4,352 ft/s (1,326 m/s)
1,683 ft⋅lbf (2,282 J)
60 gr (4 g) JSP
3,733 ft/s (1,138 m/s)
1,857 ft⋅lbf (2,518 J)
75 gr (5 g) BT (boat-tailed)
3,378 ft/s (1,030 m/s)
1,901 ft⋅lbf (2,577 J)
Test barrel length: 24 in (610 mm)