Load data for .375 SOCOM + .375 | 250gr | Speer TBBC

Recommended Powder(s): none

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 SOCOM load data
Case Length (l3):	1.575" \| 40.0mm
Cartridge Length (C.O.L.):	2.226" \| 56.5mm
Seated Depth:	0.564" \| 14.3mm
Shank Seated Depth:	0.564" \| 14.3mm
Case Capacity:	60.0 Grains of Water \| 3.90 cm³
Primer Size:	Large Pistol Magnum (LPM)
Max. allowed Pressure:	34954 psi \| 2410 bar
LID:	LID_B6244_C570
Last updated:	2025-02-02

Load data for 38 loads in caliber .375 SOCOM with .375 | 250gr | Speer TBBC bullet and 19 powders such as none. 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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Muzzle velocity vs. barrel length
Every 1 inch additional barrel length increases muzzle velocity by approx. 18.5 fps
C.O.L. (Inch)
C.O.L. (mm)
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Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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 2219]*	<<locked>>	83%	30995	89%	**69	93%
Accurate 2015	<<locked>>	89%	30893	88%	**69	96%
Accurate 2495	<<locked>>	97%	30139	86%	**51	96%
Alliant AR-Comp	<<locked>>	93%	30850	88%	**21	98%
Alliant Reloder-10x	<<locked>>	86%	31154	89%	**82	97%
[Hodgdon H322]*	<<locked>>	89%	31256	89%	**75	93%
[Hodgdon H335]*	<<locked>>	85%	31415	90%	**85	92%
[IMR 3031]*	<<locked>>	96%	29820	85%	**95	94%
[Norma 202]*	<<locked>>	94%	31314	90%	**91	92%
[Rottweil R 901]*	<<locked>>	90%	30676	88%	**49	92%
[SNPE Vectan SP 10]*	<<locked>>	83%	30980	89%	**75	92%
[SNPE Vectan Tubal 3000]*	<<locked>>	91%	31038	89%	**09	92%
[SNPE Vectan Tubal 5000]*	<<locked>>	96%	29805	85%	**90	93%
[Somchem S335]*	<<locked>>	92%	31067	89%	**36	94%
Vihtavuori N130	<<locked>>	87%	30690	88%	**23	97%
Vihtavuori N133	<<locked>>	93%	30908	88%	**29	96%
[Vihtavuori N135]*	<<locked>>	97%	25367	73%	**64	92%
[Vihtavuori N140]*	<<locked>>	96%	31067	89%	**59	92%
[Vihtavuori N540]*	<<locked>>	96%	30922	88%	**82	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2219]*	<<locked>>	81%	28892	83%	**23	92%
[Accurate 2015]*	<<locked>>	81%	24308	70%	**21	93%
[Accurate 2495]*	<<locked>>	83%	19725	56%	**85	90%
[Alliant AR-Comp]*	<<locked>>	81%	21843	63%	**81	93%
Alliant Reloder-10x	<<locked>>	81%	27122	78%	**93	96%
[Hodgdon H322]*	<<locked>>	82%	25425	73%	**37	90%
[Hodgdon H335]*	<<locked>>	81%	28123	80%	**13	90%
[IMR 3031]*	<<locked>>	89%	24323	70%	**50	90%
[Norma 202]*	<<locked>>	90%	27151	78%	**00	90%
[Rottweil R 901]*	<<locked>>	86%	27615	79%	**80	90%
[SNPE Vectan SP 10]*	<<locked>>	81%	28935	83%	**29	91%
[SNPE Vectan Tubal 3000]*	<<locked>>	86%	26963	77%	**21	90%
[SNPE Vectan Tubal 5000]*	<<locked>>	91%	25512	73%	**88	90%
[Somchem S335]*	<<locked>>	84%	24700	71%	**95	90%
Vihtavuori N130	<<locked>>	81%	25875	74%	**18	95%
[Vihtavuori N133]*	<<locked>>	81%	21843	62%	**06	90%
[Vihtavuori N135]*	<<locked>>	93%	23235	66%	**01	90%
[Vihtavuori N140]*	<<locked>>	91%	27108	78%	**70	90%
[Vihtavuori N540]*	<<locked>>	93%	28311	81%	**23	90%

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