Load data for .357 SIG + .356 | 123gr | LOS FP

Recommended Powder(s): Alliant UNIQUE, ReloadSwiss RS 20, SNPE Vectan A0, Somchem MS200, Vihtavuori N340

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.356 \| 123gr \| LOS FP
Bullet Weight:	123gr \| 8.0g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.567" \| 14.4mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.304" \| 7.7mm
Shank Seated Depth:	0.304" \| 7.7mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B3509_C518
Last updated:	2025-01-01

Load data for 116 loads in caliber .357 SIG with .356 | 123gr | LOS FP bullet and 58 powders such as Alliant UNIQUE, ReloadSwiss RS 20, SNPE Vectan A0, Somchem MS200, Vihtavuori N340. 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 AP 100]*	<<locked>>	96%	25773	58%	**53	89%
ADI AP 70N	<<locked>>	79%	38754	88%	**62	100%
ADI APS 350	<<locked>>	86%	39798	90%	**71	100%
ADI APS 450	<<locked>>	87%	39088	88%	**04	100%
ADI AS 30	<<locked>>	90%	39204	89%	**57	100%
ADI AS 50N	<<locked>>	85%	38203	86%	**89	100%
Accurate No. 2	<<locked>>	85%	37985	86%	**55	100%
Accurate No. 5	<<locked>>	72%	39552	89%	**67	97%
[Accurate No. 7]*	<<locked>>	90%	38682	87%	**96	85%
Accurate Solo 1000	<<locked>>	89%	39566	89%	**86	100%
Accurate Solo 1250	<<locked>>	94%	38580	87%	**39	100%
Alliant BULLSEYE	<<locked>>	83%	38174	86%	**11	100%
Alliant POWER PISTOL	<<locked>>	96%	39407	89%	**19	95%
Alliant UNIQUE 👍	<<locked>>	96%	39059	88%	**34	100%
Baschieri & Pellagri 100	<<locked>>	90%	38841	88%	**86	100%
Hodgdon Clays	<<locked>>	83%	38319	87%	**65	100%
Hodgdon HP38	<<locked>>	67%	39639	90%	**32	100%
Hodgdon HS-6	<<locked>>	78%	39595	90%	**47	98%
Hodgdon Longshot	<<locked>>	74%	38580	87%	**40	99%
Hodgdon Universal	<<locked>>	88%	38754	88%	**62	100%
Hodgdon TrailBoss	<<locked>>	96%	12212	28%	**0	100%
Lovex D036	<<locked>>	72%	39479	89%	**67	97%
[Lovex D037.1]*	<<locked>>	90%	38682	87%	**96	85%
Lovex S011	<<locked>>	77%	39117	88%	**09	100%
Lovex S020	<<locked>>	85%	37840	86%	**68	100%
Maxam CSB 1	<<locked>>	95%	35984	81%	**02	100%
Maxam CSB 2	<<locked>>	95%	37956	86%	**48	100%
Maxam CSB 3	<<locked>>	93%	39131	88%	**19	100%
Maxam CSB 4	<<locked>>	90%	39552	89%	**99	100%
Maxam CSB 5	<<locked>>	83%	38319	87%	**30	100%
Ramshot Silhouette	<<locked>>	80%	39726	90%	**34	100%
Ramshot True Blue	<<locked>>	74%	39276	89%	**40	99%
Ramshot Zip	<<locked>>	67%	38609	87%	**25	100%
ReloadSwiss RS 12	<<locked>>	82%	38043	86%	**25	100%
ReloadSwiss RS 14	<<locked>>	95%	10892	25%	**7	100%
ReloadSwiss RS 20 👍	<<locked>>	97%	37768	85%	**11	100%
[ReloadSwiss RS 24]*	<<locked>>	96%	36738	83%	**60	87%
Rottweil P 801	<<locked>>	77%	38276	87%	**93	100%
Rottweil P 806	<<locked>>	96%	28195	64%	**11	96%
SNPE Vectan A0 👍	<<locked>>	97%	37927	86%	**58	100%
SNPE Vectan BA 9	<<locked>>	88%	37768	85%	**25	100%
SNPE Vectan BA10	<<locked>>	81%	39073	88%	**04	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	32634	74%	**35	97%
SNPE Vectan BA9 1/2	<<locked>>	89%	38029	86%	**45	100%
Shooters World Auto Pistol	<<locked>>	72%	39479	89%	**67	97%
[Shooters World Major Pistol]*	<<locked>>	90%	38682	87%	**96	85%
Somchem MP200	<<locked>>	88%	39175	89%	**17	100%
Somchem MS200 👍	<<locked>>	93%	38972	88%	**85	100%
Somchem S221	<<locked>>	83%	39392	89%	**76	92%
Vihtavuori 3N37	<<locked>>	97%	39247	89%	**53	99%
[Vihtavuori 3N38]*	<<locked>>	97%	26484	60%	**89	83%
Vihtavuori N310	<<locked>>	70%	37753	85%	**91	100%
Vihtavuori N320	<<locked>>	87%	38493	87%	**99	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	25991	59%	**83	100%
Vihtavuori N330	<<locked>>	89%	37942	86%	**58	100%
Vihtavuori N340 👍	<<locked>>	94%	39276	89%	**94	100%
Vihtavuori N350	<<locked>>	97%	35636	81%	**04	99%
Winchester 231	<<locked>>	75%	38609	87%	**25	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	78%	16534	37%	**47	81%
ADI AP 70N	<<locked>>	61%	23888	54%	**61	100%
ADI APS 350	<<locked>>	62%	23743	54%	**8	100%
ADI APS 450	<<locked>>	62%	22597	51%	**7	100%
ADI AS 30	<<locked>>	60%	19783	45%	**1	100%
ADI AS 50N	<<locked>>	61%	20972	47%	**56	100%
Accurate No. 2	<<locked>>	62%	18811	43%	**60	95%
Accurate No. 5	<<locked>>	62%	27441	62%	**83	92%
[Accurate No. 7]*	<<locked>>	82%	29457	67%	**68	81%
Accurate Solo 1000	<<locked>>	61%	20349	46%	**30	100%
Accurate Solo 1250	<<locked>>	61%	16636	38%	**07	100%
Alliant BULLSEYE	<<locked>>	62%	21698	49%	**52	99%
[Alliant POWER PISTOL]*	<<locked>>	66%	17405	39%	**99	81%
Alliant UNIQUE	<<locked>>	61%	16404	37%	**37	96%
Baschieri & Pellagri 100	<<locked>>	61%	18898	43%	**17	100%
Hodgdon Clays	<<locked>>	62%	24076	54%	**7	100%
Hodgdon HP38	<<locked>>	61%	32242	73%	**47	100%
Hodgdon HS-6	<<locked>>	61%	22568	51%	**88	92%
Hodgdon Longshot	<<locked>>	60%	24047	54%	**14	94%
Hodgdon Universal	<<locked>>	62%	19798	45%	**86	100%
Hodgdon TrailBoss	<<locked>>	63%	6788	15%	**6	99%
Lovex D036	<<locked>>	62%	27383	62%	**83	92%
[Lovex D037.1]*	<<locked>>	82%	29457	67%	**68	81%
Lovex S011	<<locked>>	60%	24453	55%	**25	100%
Lovex S020	<<locked>>	61%	18434	42%	**73	99%
Maxam CSB 1	<<locked>>	62%	15896	36%	**4	99%
Maxam CSB 2	<<locked>>	60%	15592	35%	**07	100%
Maxam CSB 3	<<locked>>	61%	18101	41%	**17	100%
Maxam CSB 4	<<locked>>	60%	18942	43%	**17	100%
Maxam CSB 5	<<locked>>	60%	21495	49%	**20	100%
Ramshot Silhouette	<<locked>>	62%	23250	53%	**88	98%
Ramshot True Blue	<<locked>>	61%	25889	59%	**43	95%
Ramshot Zip	<<locked>>	60%	31053	70%	**43	100%
ReloadSwiss RS 12	<<locked>>	61%	21379	48%	**06	100%
ReloadSwiss RS 14	<<locked>>	66%	6715	15%	**6	95%
ReloadSwiss RS 20	<<locked>>	61%	14286	32%	**07	96%
[ReloadSwiss RS 24]*	<<locked>>	82%	24540	55%	**60	80%
Rottweil P 801	<<locked>>	60%	24584	56%	**22	100%
[Rottweil P 806]*	<<locked>>	69%	11879	27%	**20	80%
SNPE Vectan A0	<<locked>>	62%	15795	36%	**8	95%
SNPE Vectan BA 9	<<locked>>	61%	18985	43%	**47	100%
SNPE Vectan BA10	<<locked>>	61%	24134	55%	**20	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	62%	13140	30%	**5	83%
SNPE Vectan BA9 1/2	<<locked>>	61%	18536	42%	**47	100%
Shooters World Auto Pistol	<<locked>>	62%	27383	62%	**83	92%
[Shooters World Major Pistol]*	<<locked>>	82%	29457	67%	**68	81%
Somchem MP200	<<locked>>	61%	18971	43%	**93	97%
Somchem MS200	<<locked>>	60%	17172	39%	**33	97%
[Somchem S221]*	<<locked>>	62%	20581	47%	**55	81%
[Vihtavuori 3N37]*	<<locked>>	60%	13779	31%	**8	86%
[Vihtavuori 3N38]*	<<locked>>	92%	23366	53%	**30	80%
Vihtavuori N310	<<locked>>	61%	28921	65%	**93	100%
Vihtavuori N320	<<locked>>	60%	19116	43%	**37	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	12096	27%	**7	100%
Vihtavuori N330	<<locked>>	61%	17202	39%	**50	100%
Vihtavuori N340	<<locked>>	62%	16476	37%	**27	96%
[Vihtavuori N350]*	<<locked>>	60%	12662	29%	**5	84%
Winchester 231	<<locked>>	62%	26266	59%	**75	100%

Start Load - Barrel Length: 5.50''

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