Load data for .357 SIG + .357 | 158gr | LOS HP

Recommended Powder(s): Alliant UNIQUE, ReloadSwiss RS 20, Somchem MS200, Vihtavuori 3N37, Vihtavuori N340

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| LOS HP
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.661" \| 16.8mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.398" \| 10.1mm
Shank Seated Depth:	0.398" \| 10.1mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B3516_C518
Last updated:	2025-01-01

Load data for 118 loads in caliber .357 SIG with .357 | 158gr | LOS HP bullet and 59 powders such as Alliant UNIQUE, ReloadSwiss RS 20, Somchem MS200, Vihtavuori 3N37, 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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Max FR*
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Safety Buffer (%)
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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.

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>>	95%	25266	57%	**33	91%
ADI AP 70N	<<locked>>	80%	39639	90%	**22	100%
ADI APS 350	<<locked>>	82%	37144	84%	**2	100%
ADI APS 450	<<locked>>	85%	38276	87%	**1	100%
ADI AS 30	<<locked>>	89%	39233	89%	**20	100%
ADI AS 50N	<<locked>>	85%	38769	88%	**60	100%
Accurate No. 2	<<locked>>	86%	38972	88%	**19	100%
Accurate No. 5	<<locked>>	72%	39639	90%	**14	98%
[Accurate No. 7]*	<<locked>>	90%	39262	89%	**57	88%
Accurate Solo 1000	<<locked>>	86%	37565	85%	**30	100%
Accurate Solo 1250	<<locked>>	95%	39218	89%	**99	100%
Alliant BULLSEYE	<<locked>>	83%	38638	87%	**58	100%
Alliant POWER PISTOL	<<locked>>	96%	39784	90%	**66	97%
Alliant UNIQUE 👍	<<locked>>	96%	39334	89%	**78	100%
Baschieri & Pellagri 100	<<locked>>	89%	38972	88%	**43	100%
Hodgdon Clays	<<locked>>	82%	37652	85%	**5	100%
Hodgdon HP38	<<locked>>	66%	37985	86%	**76	100%
Hodgdon HS-6	<<locked>>	77%	37942	86%	**81	99%
Hodgdon Longshot	<<locked>>	74%	38769	88%	**84	100%
Hodgdon Universal	<<locked>>	88%	39639	90%	**22	100%
Hodgdon TrailBoss	<<locked>>	95%	11966	27%	**2	100%
Lovex D036	<<locked>>	72%	39595	89%	**14	98%
[Lovex D037.1]*	<<locked>>	90%	39262	89%	**57	88%
Lovex S011	<<locked>>	76%	38566	87%	**63	100%
Lovex S020	<<locked>>	87%	39668	90%	**35	100%
Maxam CSB 1	<<locked>>	96%	36463	82%	**73	100%
Maxam CSB 2	<<locked>>	96%	39378	89%	**12	100%
Maxam CSB 3	<<locked>>	92%	38914	88%	**73	100%
Maxam CSB 4	<<locked>>	88%	37898	86%	**47	100%
Maxam CSB 5	<<locked>>	82%	37101	84%	**7	100%
Ramshot Silhouette	<<locked>>	77%	38000	86%	**58	100%
Ramshot True Blue	<<locked>>	73%	39117	88%	**84	100%
Ramshot Zip	<<locked>>	67%	39175	89%	**93	100%
ReloadSwiss RS 12	<<locked>>	82%	38595	87%	**89	100%
ReloadSwiss RS 14	<<locked>>	93%	10689	24%	**6	100%
ReloadSwiss RS 20 👍	<<locked>>	95%	36434	82%	**48	100%
ReloadSwiss RS 24	<<locked>>	97%	38319	87%	**30	90%
Rottweil P 801	<<locked>>	76%	38072	86%	**53	100%
Rottweil P 806	<<locked>>	96%	28123	64%	**81	98%
SNPE Vectan A0	<<locked>>	97%	38189	86%	**12	100%
SNPE Vectan BA 9	<<locked>>	87%	37608	85%	**89	100%
SNPE Vectan BA10	<<locked>>	79%	38276	87%	**1	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	33141	75%	**09	99%
SNPE Vectan BA9 1/2	<<locked>>	90%	39465	89%	**12	100%
Shooters World Auto Pistol	<<locked>>	72%	39595	89%	**14	98%
[Shooters World Major Pistol]*	<<locked>>	90%	39262	89%	**57	88%
Somchem MP200	<<locked>>	87%	38203	86%	**52	100%
Somchem MS200 👍	<<locked>>	92%	38580	87%	**32	100%
Somchem S221	<<locked>>	82%	38783	88%	**17	94%
Vihtavuori 3N37 👍	<<locked>>	96%	39392	89%	**04	100%
[Vihtavuori 3N38]*	<<locked>>	96%	26194	59%	**70	85%
[Vihtavuori N105]*	<<locked>>	95%	19667	44%	**01	84%
Vihtavuori N310	<<locked>>	70%	37971	86%	**1	100%
Vihtavuori N320	<<locked>>	85%	37246	84%	**50	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	26295	59%	**6	100%
Vihtavuori N330	<<locked>>	90%	39392	89%	**22	100%
Vihtavuori N340 👍	<<locked>>	94%	39537	89%	**42	100%
Vihtavuori N350	<<locked>>	95%	34113	77%	**45	100%
Winchester 231	<<locked>>	75%	39175	89%	**93	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	72%	14388	33%	**3	81%
ADI AP 70N	<<locked>>	60%	22858	52%	**8	100%
[ADI APS 350]²	<<locked>>	59%	22365	51%	**1	100%
ADI APS 450	<<locked>>	61%	22046	50%	**7	100%
ADI AS 30	<<locked>>	62%	20929	47%	**7	100%
ADI AS 50N	<<locked>>	61%	21509	49%	**9	100%
Accurate No. 2	<<locked>>	61%	18782	42%	**3	97%
Accurate No. 5	<<locked>>	62%	27876	63%	**73	95%
[Accurate No. 7]*	<<locked>>	77%	24772	56%	**73	80%
Accurate Solo 1000	<<locked>>	61%	20247	46%	**0	100%
Accurate Solo 1250	<<locked>>	62%	17100	39%	**0	100%
Alliant BULLSEYE	<<locked>>	61%	21901	50%	**1	100%
[Alliant POWER PISTOL]*	<<locked>>	60%	14953	34%	**0	81%
Alliant UNIQUE	<<locked>>	61%	16331	37%	**0	97%
Baschieri & Pellagri 100	<<locked>>	62%	19580	44%	**3	100%
[Hodgdon Clays]²	<<locked>>	59%	22669	51%	**4	100%
Hodgdon HP38	<<locked>>	61%	33301	75%	**33	100%
Hodgdon HS-6	<<locked>>	61%	22481	51%	**1	94%
Hodgdon Longshot	<<locked>>	62%	25411	57%	**30	97%
Hodgdon Universal	<<locked>>	61%	19682	45%	**9	100%
Hodgdon TrailBoss	<<locked>>	89%	10950	25%	**9	100%
Lovex D036	<<locked>>	62%	27818	63%	**73	95%
[Lovex D037.1]*	<<locked>>	77%	24772	56%	**73	80%
Lovex S011	<<locked>>	60%	24453	55%	**2	100%
Lovex S020	<<locked>>	61%	18971	43%	**2	100%
Maxam CSB 1	<<locked>>	60%	15171	34%	**4	100%
Maxam CSB 2	<<locked>>	61%	16172	37%	**0	100%
Maxam CSB 3	<<locked>>	62%	18565	42%	**0	100%
Maxam CSB 4	<<locked>>	60%	18855	43%	**3	100%
Maxam CSB 5	<<locked>>	62%	23076	52%	**3	100%
Ramshot Silhouette	<<locked>>	61%	22872	52%	**4	99%
Ramshot True Blue	<<locked>>	61%	26092	59%	**30	97%
Ramshot Zip	<<locked>>	61%	32068	73%	**27	100%
ReloadSwiss RS 12	<<locked>>	61%	21364	48%	**6	100%
ReloadSwiss RS 14	<<locked>>	88%	9790	22%	**9	100%
ReloadSwiss RS 20	<<locked>>	61%	14431	33%	**0	98%
[ReloadSwiss RS 24]*	<<locked>>	77%	21640	49%	**01	81%
Rottweil P 801	<<locked>>	61%	24787	56%	**2	100%
[Rottweil P 806]*	<<locked>>	64%	10283	23%	**7	81%
SNPE Vectan A0	<<locked>>	61%	15635	35%	**0	97%
SNPE Vectan BA 9	<<locked>>	61%	19261	44%	**6	100%
SNPE Vectan BA10	<<locked>>	60%	23989	54%	**3	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	60%	12966	29%	**1	86%
SNPE Vectan BA9 1/2	<<locked>>	60%	18173	41%	**0	100%
Shooters World Auto Pistol	<<locked>>	62%	27818	63%	**73	95%
[Shooters World Major Pistol]*	<<locked>>	77%	24772	56%	**73	80%
Somchem MP200	<<locked>>	60%	18579	42%	**2	98%
Somchem MS200	<<locked>>	60%	16955	38%	**6	98%
[Somchem S221]*	<<locked>>	61%	20044	45%	**1	83%
Vihtavuori 3N37	<<locked>>	62%	14779	33%	**6	90%
[Vihtavuori 3N38]*	<<locked>>	87%	20523	46%	**4	81%
[Vihtavuori N105]*	<<locked>>	91%	17172	39%	**8	81%
Vihtavuori N310	<<locked>>	61%	29269	66%	**6	100%
Vihtavuori N320	<<locked>>	60%	19464	44%	**6	100%
Vihtavuori N32C Tin Star	<<locked>>	60%	11661	26%	**6	100%
Vihtavuori N330	<<locked>>	60%	16839	38%	**0	100%
Vihtavuori N340	<<locked>>	61%	16636	38%	**3	98%
[Vihtavuori N350]*	<<locked>>	61%	13126	30%	**1	88%
Winchester 231	<<locked>>	61%	25918	59%	**8	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.