.375 H&H Magnum

Test barrel: 620 mm (24½”), 1 in 12” twist
Primers: Large Rifle Magnum
Cases: Remington, trim-to length 72,20 mm (2.842”)

Bullet	15,2 g / 235 gr		Speer, Spitzer		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	4,55	70.2	816	2677	4,91	75.8	879	2884
N540	4,11	63.4	729	2392	5,18	79.9	890	2920
N150	4,75	73.3	834	2736	5,10	78.7	886	2907
Bullet	16,2 g / 250 gr		Barnes, TTSX BT		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N135	3,72	57.4	723	2372	4,13	63.7	788	2585
N140	4,00	61.7	747	2451	4,73C	73.0C	837	2746
N540	4,45	68.7	796	2612	4,88C	75.3C	862	2828
N150	4,25	65.6	767	2516	4,72C	72.8C	834	2736
N550	4,80	74.1	803	2635	5,22C	80.6C	868	2848
C – Compressed load
Bullet	16,2 g / 250 gr		Hornady, CX		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N135	3,60	55.6	714	2343	4,09	63.1	784	2572
N140	4,05	62.5	750	2461	4,56C	70.4C	821	2694
N540	4,40	67.9	800	2625	4,76C	73.5C	855	2805
N150	4,20	64.8	765	2510	4,62C	71.3C	827	2713
N550	4,75	73.3	801	2628	5,17C	79.8C	866	2841
C – Compressed load
Bullet	16,2 g / 250 gr		Sierra, SBT		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N135	3,95	61.0	771	2530	4,30	66.4	822	2697
N140	4,00	61.7	772	2533	4,41	68.1	830	2723
N540	4,44	68.5	797	2615	4,82	74.4	856	2808
N150	4,25	65.6	794	2605	4,72	72.8	852	2795
N550	4,80	74.1	823	2700	5,25C	81.0C	885	2904
C – Compressed load
Bullet	16,8 g / 260 gr		Sako, Blade 650D		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	4,03	62.2	732	2402	4,53C	69.9C	800	2625
N540	4,25	65.6	766	2513	4,80C	74.1C	836	2743
N150	4,11	63.4	745	2444	4,63C	71.5C	810	2657
N550	4,75	73.3	786	2579	5,12C	79.0C	842	2762
C – Compressed load
Bullet	17,5 g / 270 gr		Brenneke, TOG		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,80	58.6	706	2316	4,27	65.9	774	2539
N540	4,15	64.0	751	2464	4,62	71.3	817	2680
N150	3,97	61.3	718	2356	4,41	68.1	782	2566
N550	4,50	69.4	768	2520	4,88C	75.3C	825	2707
C – Compressed load
Bullet	17,5 g / 270 gr		Hornady, Interlock SP RP		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,92	60.5	735	2411	4,28	66.1	790	2592
N540	4,30	66.4	779	2556	4,75	73.3	836	2743
N150	4,15	64.0	758	2487	4,64C	71.6C	814	2671
N550	4,65	71.8	782	2566	5,05C	77.9C	841	2759
C – Compressed load
Bullet	17,5 g / 270 gr		Speer, BTSP		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N135	3,97	61.3	749	2457	4,27	65.9	793	2602
N140	4,20	64.8	766	2513	4,46	68.8	807	2648
N540	4,20	64.8	770	2526	4,72	72.8	840	2756
N150	4,25	65.6	773	2536	4,62C	71.3C	821	2694
N550	4,75	73.3	799	2621	5,12C	79.0C	854	2802
C – Compressed load
Bullet	17,5 g / 270 gr		Woodleigh, RNSP		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N135	3,85	59.4	707	2320	4,27	65.9	771	2530
N540	4,45	68.7	766	2513	4,85	74.8	827	2713
N150	4,20	64.8	735	2411	4,70	72.5	799	2621
Bullet	17,7 g / 273 gr		CopperBear, EXHBT		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,50	54.0	668	2192	4,04	62.3	741	2431
N540	3,95	61.0	716	2349	4,56	70.4	800	2625
N150	3,82	59.0	698	2290	4,32	66.7	767	2516
N550	4,30	66.4	734	2408	4,86C	75.0C	810	2657
N555	4,80	74.1	757	2484	5,25F	81.0F	807	2648
C – Compressed load
Bullet	18,5 g / 285 gr		Speer, Grand Slam		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,90	60.2	665	2182	4,41	68.0	784	2572
N540	4,22	65.1	732	2402	4,60	71.0	790	2592
N150	4,21	65.0	733	2405	4,69	72.4	792	2598
Bullet	19,4 g / 300 gr		Barnes, TSX FB		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,70	57.1	654	2146	4,28	66.1	729	2392
N540	4,10	63.3	702	2303	4,55C	70.2C	764	2507
N150	3,85	59.4	663	2175	4,32C	66.7C	731	2398
N550	4,45	68.7	715	2346	4,88C	75.3C	780	2559
N555	4,90	75.6	732	2402	5,10C	78.7C	751	2464
C – Compressed load
Bullet	19,4 g / 300 gr		Hornady, DGX		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,80	58.6	684	2244	4,16	64.2	741	2431
N540	4,00	61.7	710	2329	4,40	67.9	766	2513
N150	3,70	57.1	675	2215	4,20	64.8	738	2421
N550	4,35	67.1	728	2388	4,68C	72.2C	778	2552
N555	4,80	74.1	751	2464	5,35C	82.6C	807	2648
C – Compressed load
Bullet	19,4 g / 300 gr		Swift, A-Frame		C.O.L. 91,0 mm / 3.583 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N140	3,75	57.9	657	2156	4,27	65.9	736	2415
N540	4,02	62.0	692	2270	4,34	67.0	743	2438
N150	3,70	57.1	650	2133	4,24	65.4	726	2382
Bullet	22,7 g / 350 gr		Barnes, TSX FB		C.O.L. 91,4 mm / 3.600 inch
Powder	Starting load				Maximum load
Type	Weight		Velocity		Weight		Velocity
	[g]	[grs]	[m/s]	[fps]	[g]	[grs]	[m/s]	[fps]
N540	3,70	57.1	619	2031	4,09C	63.1C	680	2231
N150	3,45	53.2	582	1909	3,92C	60.5C	645	2116
N550	4,05	62.5	643	2110	4,37C	67.4C	693	2274

---