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7,5 x 55 Swiss GP31

Test barrel: 600 mm (23½”), 1 in 10” twist
Primers: Large Rifle
Cases: Norma, trim-to length 55,40 mm (2.181”)

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]
10,0 155 Scenar Lapua 75,5 2.972 N140 3,00 46.3 759 2490 3,18 49.1 811 2661
            N150 3,03 46.8 763 2503 3,22 49.7 815 2674
            N540 3,05 47.1 766 2513 3,25 50.1 842 2762
10,8 167 Scenar Lapua 75,5 2.972 N540 2,65 40.9 700 2297 3,07 47.4 771 2530
            N140 2,78 42.9 700 2297 2,96 45.7 760 2493
            N150 2,78 42.9 703 2306 3,08 47.5 761 2497
12,0 185 Scenar Lapua 75,5 2.972 N140 2,45 37.8 694 2277 2,71 41.8 710 2329
            N540 2,74 42.3 688 2257 2,87 44.3 722 2369
            N150 2,85 44.0 697 2287 2,93 45.2 723 2372


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

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