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	10,0 g / 155 gr		Lapua, Scenar / OTM Scenar-L		C.O.L. 75,5 mm / 2.972 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,00	46.3	759	2490	3,18	49.1	811	2661
N540	3,05	47.1	766	2513	3,25	50.1	842	2762
N150	3,03	46.8	763	2503	3,22	49.7	815	2674
Bullet	10,9 g / 167 gr		Lapua, Scenar		C.O.L. 75,5 mm / 2.972 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	2,78	42.9	700	2297	2,96	45.7	760	2493
N540	2,65	40.9	700	2297	3,07	47.4	771	2530
N150	2,78	42.9	703	2306	3,08	47.5	761	2497
Bullet	12,0 g / 185 gr		Lapua, Scenar		C.O.L. 75,5 mm / 2.972 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
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

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