.270 WSM

Test barrel: 520 mm (20½”), 1 in 9” twist
Primers: Large Rifle Magnum
Cases: Winchester, trim-to length 53,10 mm (2.091”)
 
Bullet5,8 g / 90 grHP, SierraC.O.L. 68,6 mm / 2.701 inch
PowderStarting loadMaximum load
TypeWeightVelocityWeightVelocity
[g][grs][m/s][fps][g][grs][m/s][fps]
N1604,0061.7102133504,4769.011303707
N5604,3967.7102033464,7873.811353724
N1654,5970.8104134154,75F73.3F10833553
F – Case full
 
Bullet9,1 g / 140 grXFB, BarnesC.O.L. 71,0 mm / 2.795 inch
PowderStarting loadMaximum load
TypeWeightVelocityWeightVelocity
[g][grs][m/s][fps][g][grs][m/s][fps]
N1603,2049.480026253,7157.28992949
N5603,4953.980626443,9360.69183012
N1653,7557.983227304,1063.39132995
 
Bullet10,4 g / 160 grPartition, NoslerC.O.L. 71,0 mm / 2.795 inch
PowderStarting loadMaximum load
TypeWeightVelocityWeightVelocity
[g][grs][m/s][fps][g][grs][m/s][fps]
N1603,2049.473724183,4753.58252707
N1653,3050.976925233,9060.28632831
N5603,3651.877425393,8258.98732864