Load data for .375 H.& H. Mag. + .375 | 250gr | Speer TBBC

Recommended Powder(s): Baschieri & Pellagri 107, Hodgdon BL-C2, IMR 4895, Norma 203B, ReloadSwiss RS 52

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.375 \| 250gr \| Speer TBBC
Manufacturer SKU:	1778
Bullet Weight:	250gr \| 16.2g
Bullet Diameter:	0.375" \| 9.52mm
Bullet Length:	1.215" \| 30.9mm
Caliber:	.375 H.& H. Mag. load data
Case Length (l3):	2.859" \| 72.6mm
Cartridge Length (C.O.L.):	3.546" \| 90.1mm
Seated Depth:	0.528" \| 13.4mm
Shank Seated Depth:	0.528" \| 13.4mm
Case Capacity:	95.3 Grains of Water \| 6.19 cm³
Primer Size:	Large Rifle Magnum (LRM)
Max. allowed Pressure:	62366 psi \| 4300 bar
LID:	LID_B6244_C543
Last updated:	2025-01-01

Load data for 188 loads in caliber .375 H.& H. Mag. with .375 | 250gr | Speer TBBC bullet and 94 powders such as Baschieri & Pellagri 107, Hodgdon BL-C2, IMR 4895, Norma 203B, ReloadSwiss RS 52. The key underlying parameters are shown in the table above.

Important Notice: DO NOT go below Minimum Charge or above Maximum Charge unless there are reasons. Since xxlreloading.com has no control over the equipment and components used by the customer and the data used in connection with the website, any responsibility and liability for the results achieved is rejected. Also see our Terms of Service.

Questions regarding the load data: Please read the information in the next tab "Explanations".
A load must fulfill certain criteria to be listed in the default view below - see "powder criteria to fulfill to be listed".

Our load data might deviate from other sources - see the "most common reasons for deviations".

All loads are based on the bullet and case dimensions shown under "Load Specifications" - see "reloading suggestions" if you deviate.

You can set your specifications in the "Personalized Load Calculator".

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Our default view only displays powders/loads that fulfill certain criteria: Max pressure of a load <=90% of Max. Standardized Pressure. Fill Rate (Min FR): >80% and <100% for rife loads, >60% and <100% for pistol loads. Min. Propellant Combustion (Min z): >90% for rifle loads , >80% for pistol/revolver loads. Relax these criteria at your own risk to potentially get more powders shown in the load tables.
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.

Click on the desired row in the tables below to add a specific load / powder to your Diary and manage there.

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	92%	55695	89%	**20	99%
ADI AR 2208	<<locked>>	97%	54012	87%	**77	99%
ADI AR 2219	<<locked>>	83%	55767	89%	**87	100%
Accurate 2015	<<locked>>	88%	56057	90%	**28	100%
Accurate 2200	<<locked>>	90%	56115	90%	**87	98%
Accurate 2230	<<locked>>	86%	55434	89%	**67	100%
Accurate 2460	<<locked>>	86%	55419	89%	**77	100%
Accurate 2495	<<locked>>	92%	55753	89%	**94	100%
Accurate 2520	<<locked>>	91%	55811	89%	**13	100%
[Accurate 2700]*	<<locked>>	97%	53592	86%	**98	94%
Accurate 4064	<<locked>>	97%	54259	87%	**97	100%
Accurate 4350	<<locked>>	97%	40306	65%	**39	95%
Alliant AR-Comp	<<locked>>	91%	55564	89%	**80	100%
Alliant Reloder- TS 15.5	<<locked>>	97%	52924	85%	**94	100%
Alliant Reloder-10x	<<locked>>	86%	56072	90%	**38	100%
Alliant Reloder-15	<<locked>>	96%	56072	90%	**43	99%
Alliant Reloder-16	<<locked>>	97%	41249	66%	**46	95%
Alliant Reloder-17	<<locked>>	97%	46891	75%	**87	99%
Baschieri & Pellagri 106	<<locked>>	84%	55579	89%	**82	100%
Baschieri & Pellagri 107 👍	<<locked>>	93%	56014	90%	**40	99%
Hodgdon BL-C2 👍	<<locked>>	91%	55999	90%	**53	100%
Hodgdon Benchmark	<<locked>>	89%	56043	90%	**51	100%
Hodgdon CFE223	<<locked>>	96%	55854	90%	**76	99%
Hodgdon H322	<<locked>>	89%	55637	89%	**80	100%
Hodgdon H335	<<locked>>	84%	55463	89%	**90	100%
Hodgdon H380	<<locked>>	97%	55187	88%	**17	98%
[Hodgdon H414]*	<<locked>>	97%	48240	77%	**64	94%
Hodgdon Hybrid 100V	<<locked>>	97%	37681	60%	**41	96%
Hodgdon LVR	<<locked>>	97%	44962	72%	**95	96%
Hodgdon VARGET	<<locked>>	97%	53708	86%	**71	99%
IMR 3031	<<locked>>	96%	55521	89%	**26	100%
IMR 4064	<<locked>>	97%	52576	84%	**48	99%
IMR 4166 Enduron	<<locked>>	97%	53200	85%	**18	95%
IMR 4198	<<locked>>	85%	55535	89%	**82	100%
[IMR 4350]*	<<locked>>	97%	42380	68%	**87	91%
[IMR 4451 Enduron]*	<<locked>>	97%	50502	81%	**12	94%
[IMR 4831]*	<<locked>>	97%	35085	56%	**05	93%
IMR 4895 👍	<<locked>>	95%	55970	90%	**56	99%
IMR 8208 XBR	<<locked>>	91%	55593	89%	**87	100%
Lovex D073.4	<<locked>>	85%	56101	90%	**67	100%
Lovex D073.5	<<locked>>	86%	55419	89%	**77	100%
Lovex D073.6	<<locked>>	93%	55680	89%	**13	100%
Lovex S060	<<locked>>	92%	55579	89%	**51	99%
Lovex S062	<<locked>>	96%	55376	89%	**94	100%
Lovex S065	<<locked>>	97%	45672	73%	**46	95%
[Lovex S070]*	<<locked>>	97%	43424	70%	**16	93%
Norma 201	<<locked>>	93%	56101	90%	**90	100%
Norma 202	<<locked>>	93%	55854	90%	**90	100%
Norma 203B 👍	<<locked>>	96%	56086	90%	**46	99%
Norma URP	<<locked>>	97%	40741	65%	**33	95%
Ramshot Big Game	<<locked>>	96%	55782	89%	**59	99%
[Ramshot Hunter]*	<<locked>>	97%	40582	65%	**16	92%
Ramshot TAC	<<locked>>	91%	56072	90%	**94	97%
Ramshot Wild Boar	<<locked>>	91%	55767	89%	**30	99%
Ramshot X-Terminator	<<locked>>	88%	55956	90%	**77	99%
ReloadSwiss RS 40	<<locked>>	87%	55680	89%	**80	100%
ReloadSwiss RS 50	<<locked>>	97%	55709	89%	**00	97%
ReloadSwiss RS 52 👍	<<locked>>	97%	55854	90%	**76	100%
ReloadSwiss RS 60	<<locked>>	97%	45890	74%	**80	99%
ReloadSwiss RS 62	<<locked>>	97%	40654	65%	**52	95%
[ReloadSwiss RS 70]*	<<locked>>	97%	41887	67%	**62	94%
Rottweil R 901	<<locked>>	91%	55999	90%	**64	100%
Rottweil R 902	<<locked>>	95%	55666	89%	**80	100%
Rottweil R 903	<<locked>>	97%	49429	79%	**44	99%
[Rottweil R 907]*	<<locked>>	97%	48283	77%	**69	93%
SNPE Vectan SP 11	<<locked>>	97%	51547	83%	**07	99%
SNPE Vectan SP 7	<<locked>>	91%	55695	89%	**00	98%
SNPE Vectan SP 9	<<locked>>	93%	55738	89%	**17	99%
SNPE Vectan Tubal 3000	<<locked>>	92%	55637	89%	**12	100%
SNPE Vectan Tubal 5000	<<locked>>	97%	53882	86%	**85	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	97%	45687	73%	**97	93%
Shooters World Long Rifle	<<locked>>	97%	45672	73%	**46	95%
Shooters World Match Rifle	<<locked>>	93%	55680	89%	**13	100%
Shooters World Precision	<<locked>>	96%	55376	89%	**94	100%
Shooters World Tactical Rifle	<<locked>>	85%	55796	89%	**54	100%
Somchem S321	<<locked>>	88%	56086	90%	**17	100%
Somchem S335	<<locked>>	92%	55854	90%	**21	100%
Somchem S341	<<locked>>	92%	55825	90%	**00	99%
Somchem S355	<<locked>>	97%	50299	81%	**48	99%
Somchem S365	<<locked>>	97%	36608	59%	**84	97%
Vihtavuori N130	<<locked>>	88%	55709	89%	**89	100%
Vihtavuori N133	<<locked>>	94%	55492	89%	**02	100%
Vihtavuori N135	<<locked>>	97%	48472	78%	**69	100%
Vihtavuori N140	<<locked>>	95%	55288	89%	**64	100%
Vihtavuori N150	<<locked>>	97%	42917	69%	**97	99%
Vihtavuori N160	<<locked>>	97%	45513	73%	**79	96%
Vihtavuori N530	<<locked>>	89%	55956	90%	**00	100%
Vihtavuori N540	<<locked>>	95%	55941	90%	**03	100%
Vihtavuori N550	<<locked>>	97%	45310	73%	**18	96%
[Vihtavuori N555]*	<<locked>>	97%	30385	49%	**43	92%
Winchester 6.5 StaBALL	<<locked>>	97%	44440	71%	**36	98%
Winchester 748	<<locked>>	88%	55767	89%	**40	100%
[Winchester 760]*	<<locked>>	97%	48240	77%	**64	94%
Winchester StaBALL Match	<<locked>>	86%	55854	90%	**30	100%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	39175	63%	**38	96%
[ADI AR 2208]*	<<locked>>	81%	33272	53%	**87	93%
ADI AR 2219	<<locked>>	81%	51634	83%	**25	100%
Accurate 2015	<<locked>>	81%	44643	72%	**67	100%
Accurate 2200	<<locked>>	81%	41350	66%	**38	95%
Accurate 2230	<<locked>>	81%	46543	75%	**33	99%
Accurate 2460	<<locked>>	81%	46688	75%	**43	100%
Accurate 2495	<<locked>>	81%	39189	63%	**51	100%
Accurate 2520	<<locked>>	81%	40016	64%	**70	99%
[Accurate 2700]*	<<locked>>	88%	40306	65%	**79	90%
Accurate 4064	<<locked>>	81%	32967	53%	**33	99%
[Accurate 4350]*	<<locked>>	87%	28616	46%	**67	90%
Alliant AR-Comp	<<locked>>	81%	40103	64%	**57	100%
Alliant Reloder- TS 15.5	<<locked>>	81%	32430	52%	**13	95%
Alliant Reloder-10x	<<locked>>	81%	48283	77%	**30	100%
[Alliant Reloder-15]*	<<locked>>	81%	35056	56%	**72	94%
[Alliant Reloder-16]*	<<locked>>	87%	30748	49%	**90	90%
[Alliant Reloder-17]*	<<locked>>	81%	28195	45%	**51	91%
Baschieri & Pellagri 106	<<locked>>	81%	50372	81%	**16	100%
Baschieri & Pellagri 107	<<locked>>	81%	38159	61%	**34	95%
Hodgdon BL-C2	<<locked>>	81%	39900	64%	**87	98%
Hodgdon Benchmark	<<locked>>	81%	43569	70%	**57	99%
[Hodgdon CFE223]*	<<locked>>	81%	33286	53%	**52	92%
Hodgdon H322	<<locked>>	81%	43410	70%	**03	100%
Hodgdon H335	<<locked>>	81%	50734	81%	**25	100%
[Hodgdon H380]*	<<locked>>	81%	32837	53%	**06	92%
[Hodgdon H414]*	<<locked>>	89%	37681	60%	**54	90%
[Hodgdon Hybrid 100V]*	<<locked>>	85%	26223	42%	**52	90%
[Hodgdon LVR]*	<<locked>>	86%	31705	51%	**10	90%
[Hodgdon VARGET]*	<<locked>>	81%	33170	53%	**87	93%
IMR 3031	<<locked>>	81%	34983	56%	**88	100%
[IMR 4064]*	<<locked>>	81%	32721	52%	**70	93%
[IMR 4166 Enduron]*	<<locked>>	85%	37289	60%	**29	90%
IMR 4198	<<locked>>	81%	48936	78%	**03	100%
[IMR 4350]*	<<locked>>	94%	39334	63%	**25	90%
[IMR 4451 Enduron]*	<<locked>>	87%	37594	60%	**69	90%
[IMR 4831]*	<<locked>>	90%	28819	46%	**47	90%
IMR 4895	<<locked>>	81%	35766	57%	**98	95%
IMR 8208 XBR	<<locked>>	81%	41220	66%	**54	98%
Lovex D073.4	<<locked>>	81%	48472	78%	**59	100%
Lovex D073.5	<<locked>>	81%	46224	74%	**39	100%
Lovex D073.6	<<locked>>	81%	37521	60%	**18	99%
Lovex S060	<<locked>>	81%	39842	64%	**82	97%
Lovex S062	<<locked>>	81%	34766	56%	**36	97%
[Lovex S065]*	<<locked>>	85%	32329	52%	**70	90%
[Lovex S070]*	<<locked>>	91%	35984	58%	**69	90%
Norma 201	<<locked>>	81%	38334	61%	**95	98%
Norma 202	<<locked>>	81%	38508	62%	**18	99%
Norma 203B	<<locked>>	81%	34447	55%	**59	95%
[Norma URP]*	<<locked>>	87%	29776	48%	**70	90%
[Ramshot Big Game]*	<<locked>>	81%	33881	54%	**62	94%
[Ramshot Hunter]*	<<locked>>	92%	35375	57%	**98	90%
[Ramshot TAC]*	<<locked>>	81%	41118	66%	**44	94%
Ramshot Wild Boar	<<locked>>	81%	40248	65%	**70	97%
Ramshot X-Terminator	<<locked>>	81%	44614	72%	**97	98%
ReloadSwiss RS 40	<<locked>>	81%	46369	74%	**39	100%
[ReloadSwiss RS 50]*	<<locked>>	82%	34969	56%	**26	90%
ReloadSwiss RS 52	<<locked>>	81%	32822	53%	**65	96%
[ReloadSwiss RS 60]*	<<locked>>	81%	27659	44%	**28	91%
[ReloadSwiss RS 62]*	<<locked>>	89%	31082	50%	**29	90%
[ReloadSwiss RS 70]*	<<locked>>	91%	34577	55%	**98	90%
Rottweil R 901	<<locked>>	81%	42337	68%	**51	100%
Rottweil R 902	<<locked>>	81%	36753	59%	**56	97%
[Rottweil R 903]*	<<locked>>	81%	29965	48%	**57	94%
[Rottweil R 907]*	<<locked>>	90%	39088	63%	**02	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	31096	50%	**97	93%
[SNPE Vectan SP 7]*	<<locked>>	81%	39044	63%	**18	94%
SNPE Vectan SP 9	<<locked>>	81%	37782	61%	**08	96%
SNPE Vectan Tubal 3000	<<locked>>	81%	40321	65%	**72	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	33069	53%	**47	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	90%	36129	58%	**23	90%
[Shooters World Long Rifle]*	<<locked>>	85%	32329	52%	**70	90%
Shooters World Match Rifle	<<locked>>	81%	37521	60%	**18	99%
Shooters World Precision	<<locked>>	81%	34766	56%	**36	97%
Shooters World Tactical Rifle	<<locked>>	81%	49066	79%	**52	99%
Somchem S321	<<locked>>	81%	44382	71%	**33	99%
Somchem S335	<<locked>>	81%	39581	63%	**75	100%
Somchem S341	<<locked>>	81%	38957	62%	**21	96%
[Somchem S355]*	<<locked>>	81%	31038	50%	**67	94%
[Somchem S365]*	<<locked>>	83%	24091	39%	**33	90%
Vihtavuori N130	<<locked>>	81%	44570	71%	**28	100%
Vihtavuori N133	<<locked>>	81%	37666	60%	**33	100%
Vihtavuori N135	<<locked>>	81%	30066	48%	**31	99%
Vihtavuori N140	<<locked>>	81%	35723	57%	**46	99%
[Vihtavuori N150]*	<<locked>>	81%	26353	42%	**36	94%
[Vihtavuori N160]*	<<locked>>	84%	29820	48%	**41	90%
Vihtavuori N530	<<locked>>	81%	43395	70%	**00	99%
Vihtavuori N540	<<locked>>	81%	35491	57%	**59	99%
[Vihtavuori N550]*	<<locked>>	83%	29573	47%	**74	90%
[Vihtavuori N555]*	<<locked>>	94%	28137	45%	**83	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	26701	43%	**23	90%
Winchester 748	<<locked>>	81%	43337	69%	**49	99%
[Winchester 760]*	<<locked>>	89%	37681	60%	**54	90%
Winchester StaBALL Match	<<locked>>	81%	46050	74%	**82	99%

Start Load - Barrel Length: 23.60''

Any powder missing? Then click here.

FR ... fill rate of the cartridge in percent

MaxP ... max. pressure of load in psi or bar

% ... max. pressure of load in percent of the maximum allowed pressure for this caliber

V(0) ... muzzle velocity in feet per second (fps) or meters per second (m/s)

z ... powder burnt in percent

[...] *... not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.

[...] ²... fill rate low - you might want to consider using a filler to ensure proper ignition.

[...] ᴾ... possible press load - work up slowly to this load while watching for signs of excessive pressure.

👍 ... recommended powder/load for this caliber and bullet combination based on its ballistic performance.

<<locked>>... you need to buy an access license to unlock the data