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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”)

Bullet Powder Starting load Maximum load
Weight Type Mfg C.O.L Type Weight Velocity Weight Velocity
[g] [grs]     [mm] [in.]   [g] [grs] [m/s] [fps] [g] [grs] [m/s] [fps]
9,7 150 Spitzer Speer 75,0 2.953 N150 2,83 43.7 712 2336 3,08 47.5 890 2920
            N540 3,12 48.1 793 2602 3,52 54.3 890 2920
            N140 3,14 48.5 797 2615 3,35 51.7 858 2815
11,7 180 Naturalis Lapua 81,0 3.189 N135 2,56 39.5 693 2348 2,73 42.1 740 2428
            N140 2,71 41.8 698 2290 2,94 45.4 756 2480
            N150 2,83 43.7 712 2336 3,08 47.5 769 2523
            N540 2,86 44.1 710 2329 3,02 46.6 763 2503


LIGHT GREY TEXT BOX INDICATES MAXIMUM LOAD - USE WITH CAUTION!
LOADS LESS THAN MINIMUM CHARGES SHOWN ARE NOT RECOMMENDED

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