8 x 57 IRS

Test barrel: 620 mm (24½”), 1 in 9½” twist
Primers: Large Rifle
Cases: Lapua, trim-to length 56,80 mm (2.236”)
 
Bullet9,7 g / 150 grSpitzer, SpeerC.O.L. 75,0 mm / 2.953 inch
PowderStarting loadMaximum load
TypeWeightVelocityWeightVelocity
[g][grs][m/s][fps][g][grs][m/s][fps]
N1502,8343.771223363,0847.58902920
N5403,1248.179326023,5254.38902920
N1403,1448.579726153,3551.78582815
 
Bullet11,7 g / 180 grNaturalis N559, LapuaC.O.L. 79,5 mm / 3.130 inch
PowderStarting loadMaximum load
TypeWeightVelocityWeightVelocity
[g][grs][m/s][fps][g][grs][m/s][fps]
N1352,4738.170223032,6540.97422434
N1502,6340.671723522,8343.77582487
N1402,6340.671123332,8343.77582487
N5402,7742.773324052,9445.47782552
 
Bullet12,8 g / 198 grTIG, BrennekeC.O.L. 77,0 mm / 3.031 inch
PowderStarting loadMaximum load
TypeWeightVelocityWeightVelocity
[g][grs][m/s][fps][g][grs][m/s][fps]
N1402,8043.270823232,9545.57392425
N5402,9345.272123653,0747.47582487