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

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 HP
Bullet Weight:	123gr \| 8.0g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.550" \| 14.0mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.287" \| 7.3mm
Shank Seated Depth:	0.287" \| 7.3mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B3510_C518
Last updated:	2025-01-01

Load data for 118 loads in caliber .357 SIG with .356 | 123gr | LOS HP bullet and 59 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>>	97%	27006	61%	**83	90%
ADI AP 70N	<<locked>>	78%	38653	87%	**71	100%
ADI APS 350	<<locked>>	83%	38290	87%	**61	100%
ADI APS 450	<<locked>>	86%	39189	89%	**11	100%
ADI AS 30	<<locked>>	90%	39813	90%	**66	100%
ADI AS 50N	<<locked>>	84%	38450	87%	**02	100%
Accurate No. 2	<<locked>>	84%	37913	86%	**65	100%
Accurate No. 5	<<locked>>	71%	39552	89%	**83	97%
[Accurate No. 7]*	<<locked>>	90%	38914	88%	**16	86%
Accurate Solo 1000	<<locked>>	86%	37623	85%	**76	100%
Accurate Solo 1250	<<locked>>	93%	38624	87%	**48	100%
Alliant BULLSEYE	<<locked>>	82%	38261	87%	**21	100%
Alliant POWER PISTOL	<<locked>>	94%	39392	89%	**32	95%
Alliant UNIQUE 👍	<<locked>>	95%	39102	88%	**40	100%
Baschieri & Pellagri 100	<<locked>>	89%	39363	89%	**96	100%
Hodgdon Clays	<<locked>>	83%	38841	88%	**84	100%
Hodgdon HP38	<<locked>>	67%	39697	90%	**42	100%
Hodgdon HS-6	<<locked>>	77%	38754	88%	**50	98%
Hodgdon Longshot	<<locked>>	73%	38203	86%	**40	99%
Hodgdon Universal	<<locked>>	87%	38653	87%	**71	100%
Hodgdon CFE Pistol	<<locked>>	90%	39798	90%	**75	100%
Hodgdon TrailBoss	<<locked>>	93%	11937	27%	**6	100%
Lovex D036	<<locked>>	71%	39494	89%	**83	97%
[Lovex D037.1]*	<<locked>>	90%	38914	88%	**16	86%
Lovex S011	<<locked>>	76%	39450	89%	**22	100%
Lovex S020	<<locked>>	84%	37768	85%	**75	100%
Maxam CSB 1	<<locked>>	97%	37681	85%	**39	100%
Maxam CSB 2	<<locked>>	94%	38261	86%	**58	100%
Maxam CSB 3	<<locked>>	92%	39305	89%	**29	100%
Maxam CSB 4	<<locked>>	89%	39436	89%	**12	100%
Maxam CSB 5	<<locked>>	83%	38667	87%	**47	100%
Ramshot Silhouette	<<locked>>	78%	39523	89%	**37	100%
Ramshot True Blue	<<locked>>	72%	38899	88%	**44	99%
Ramshot Zip	<<locked>>	66%	38319	87%	**39	100%
ReloadSwiss RS 12	<<locked>>	81%	38232	86%	**42	100%
ReloadSwiss RS 14	<<locked>>	95%	11269	25%	**3	100%
ReloadSwiss RS 20 👍	<<locked>>	95%	37478	85%	**21	100%
[ReloadSwiss RS 24]*	<<locked>>	96%	37391	85%	**86	88%
Rottweil P 801	<<locked>>	76%	38493	87%	**02	100%
Rottweil P 806	<<locked>>	97%	30429	69%	**53	97%
SNPE Vectan A0 👍	<<locked>>	96%	37405	85%	**65	100%
SNPE Vectan BA 9	<<locked>>	88%	39566	89%	**58	100%
SNPE Vectan BA10	<<locked>>	80%	39160	89%	**11	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	33605	76%	**62	98%
SNPE Vectan BA9 1/2	<<locked>>	88%	37898	86%	**55	100%
Shooters World Auto Pistol	<<locked>>	71%	39494	89%	**83	97%
[Shooters World Major Pistol]*	<<locked>>	90%	38914	88%	**16	86%
Somchem MP200	<<locked>>	87%	39204	89%	**24	100%
Somchem MS200 👍	<<locked>>	92%	38841	88%	**98	100%
Somchem S221	<<locked>>	81%	38464	87%	**76	92%
Vihtavuori 3N37	<<locked>>	95%	38508	87%	**60	99%
[Vihtavuori 3N38]*	<<locked>>	97%	27383	62%	**16	84%
Vihtavuori N310	<<locked>>	70%	38319	87%	**04	100%
Vihtavuori N320	<<locked>>	86%	38928	88%	**12	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	26556	60%	**96	100%
Vihtavuori N330	<<locked>>	88%	38377	87%	**68	100%
Vihtavuori N340 👍	<<locked>>	92%	38972	88%	**01	100%
Vihtavuori N350	<<locked>>	95%	35418	80%	**17	99%
Winchester 231	<<locked>>	74%	38319	87%	**39	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	75%	15853	36%	**40	81%
ADI AP 70N	<<locked>>	61%	24178	55%	**71	100%
ADI APS 350	<<locked>>	60%	22843	52%	**4	100%
ADI APS 450	<<locked>>	60%	21683	49%	**8	100%
ADI AS 30	<<locked>>	61%	20581	47%	**14	100%
ADI AS 50N	<<locked>>	61%	21669	49%	**76	100%
Accurate No. 2	<<locked>>	62%	19160	43%	**73	96%
Accurate No. 5	<<locked>>	61%	27253	62%	**96	93%
[Accurate No. 7]*	<<locked>>	81%	28950	65%	**71	81%
Accurate Solo 1000	<<locked>>	61%	21031	48%	**43	100%
Accurate Solo 1250	<<locked>>	62%	16998	38%	**24	100%
Alliant BULLSEYE	<<locked>>	62%	22307	50%	**68	99%
[Alliant POWER PISTOL]*	<<locked>>	64%	16694	38%	**93	80%
Alliant UNIQUE	<<locked>>	61%	16795	38%	**56	96%
Baschieri & Pellagri 100	<<locked>>	62%	19276	44%	**30	100%
Hodgdon Clays	<<locked>>	60%	23061	52%	**8	100%
Hodgdon HP38	<<locked>>	60%	32503	73%	**60	100%
Hodgdon HS-6	<<locked>>	61%	22684	51%	**98	92%
Hodgdon Longshot	<<locked>>	61%	25338	57%	**50	96%
Hodgdon Universal	<<locked>>	62%	20276	46%	**02	100%
Hodgdon CFE Pistol	<<locked>>	61%	18536	42%	**66	100%
Hodgdon TrailBoss	<<locked>>	65%	7165	16%	**9	99%
Lovex D036	<<locked>>	61%	27209	62%	**96	93%
[Lovex D037.1]*	<<locked>>	81%	28950	65%	**71	81%
Lovex S011	<<locked>>	60%	24874	56%	**38	100%
Lovex S020	<<locked>>	61%	18971	43%	**89	99%
Maxam CSB 1	<<locked>>	62%	16389	37%	**04	100%
Maxam CSB 2	<<locked>>	60%	16041	36%	**24	100%
Maxam CSB 3	<<locked>>	61%	18724	42%	**37	100%
Maxam CSB 4	<<locked>>	60%	19508	44%	**37	100%
Maxam CSB 5	<<locked>>	60%	22350	51%	**40	100%
Ramshot Silhouette	<<locked>>	61%	23351	53%	**01	98%
Ramshot True Blue	<<locked>>	62%	27079	61%	**70	96%
Ramshot Zip	<<locked>>	61%	32895	74%	**76	100%
ReloadSwiss RS 12	<<locked>>	61%	21886	49%	**22	100%
ReloadSwiss RS 14	<<locked>>	63%	6599	15%	**3	95%
ReloadSwiss RS 20	<<locked>>	61%	14605	33%	**24	97%
[ReloadSwiss RS 24]*	<<locked>>	81%	24337	55%	**70	81%
Rottweil P 801	<<locked>>	60%	25019	57%	**32	100%
[Rottweil P 806]*	<<locked>>	67%	11473	26%	**10	80%
SNPE Vectan A0	<<locked>>	62%	16143	36%	**04	96%
SNPE Vectan BA 9	<<locked>>	61%	19276	44%	**63	100%
SNPE Vectan BA10	<<locked>>	61%	24816	56%	**37	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	13518	31%	**1	84%
SNPE Vectan BA9 1/2	<<locked>>	61%	18942	43%	**70	100%
Shooters World Auto Pistol	<<locked>>	61%	27209	62%	**96	93%
[Shooters World Major Pistol]*	<<locked>>	81%	28950	65%	**71	81%
Somchem MP200	<<locked>>	61%	19348	44%	**06	97%
Somchem MS200	<<locked>>	60%	17709	40%	**53	98%
[Somchem S221]*	<<locked>>	61%	20668	47%	**61	81%
[Vihtavuori 3N37]*	<<locked>>	62%	14939	34%	**27	88%
[Vihtavuori 3N38]*	<<locked>>	90%	22756	51%	**34	80%
Vihtavuori N310	<<locked>>	61%	29704	67%	**12	100%
Vihtavuori N320	<<locked>>	60%	19653	44%	**56	100%
Vihtavuori N32C Tin Star	<<locked>>	60%	11806	27%	**3	100%
Vihtavuori N330	<<locked>>	61%	17695	40%	**70	100%
Vihtavuori N340	<<locked>>	62%	16984	38%	**43	97%
[Vihtavuori N350]*	<<locked>>	62%	13590	31%	**4	86%
Winchester 231	<<locked>>	61%	26658	60%	**88	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