Load data for .357 SIG + .357 | 125gr | Speer JSP

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:	.357 \| 125gr \| Speer JSP
Manufacturer SKU:	4011
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.515" \| 13.1mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.252" \| 6.4mm
Shank Seated Depth:	0.252" \| 6.4mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B6217_C518
Last updated:	2025-01-01

Load data for 120 loads in caliber .357 SIG with .357 | 125gr | Speer JSP bullet and 60 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%	27427	62%	**09	92%
ADI AP 70N	<<locked>>	77%	38740	88%	**81	100%
ADI APS 350	<<locked>>	83%	39001	88%	**78	100%
ADI APS 450	<<locked>>	83%	37869	86%	**04	100%
ADI AS 30	<<locked>>	86%	38145	86%	**60	100%
ADI AS 50N	<<locked>>	83%	38479	87%	**12	100%
Accurate No. 2	<<locked>>	83%	37826	86%	**75	100%
Accurate No. 5	<<locked>>	69%	38319	87%	**80	98%
[Accurate No. 7]*	<<locked>>	87%	38667	87%	**26	87%
Accurate Solo 1000	<<locked>>	85%	38072	86%	**93	100%
Accurate Solo 1250	<<locked>>	92%	38711	88%	**62	100%
[Accurate TCM]*	<<locked>>	96%	38667	87%	**03	82%
Alliant BULLSEYE	<<locked>>	81%	38522	87%	**30	100%
Alliant POWER PISTOL	<<locked>>	93%	39653	90%	**52	96%
Alliant UNIQUE 👍	<<locked>>	93%	38798	88%	**47	100%
Baschieri & Pellagri 100	<<locked>>	87%	39305	89%	**06	100%
Hodgdon Clays	<<locked>>	83%	39726	90%	**01	100%
Hodgdon HP38	<<locked>>	65%	39755	90%	**52	100%
Hodgdon HS-6	<<locked>>	76%	39450	89%	**73	99%
Hodgdon Longshot	<<locked>>	72%	38856	88%	**60	100%
Hodgdon Universal	<<locked>>	85%	38740	88%	**81	100%
Hodgdon TrailBoss	<<locked>>	95%	12314	28%	**6	100%
Lovex D036	<<locked>>	70%	39769	90%	**03	98%
[Lovex D037.1]*	<<locked>>	87%	38667	87%	**26	87%
Lovex S011	<<locked>>	75%	39523	89%	**32	100%
Lovex S020	<<locked>>	84%	39653	90%	**04	100%
Maxam CSB 1	<<locked>>	97%	39479	89%	**65	100%
Maxam CSB 2	<<locked>>	92%	38421	87%	**62	100%
Maxam CSB 3	<<locked>>	91%	39407	89%	**35	100%
Maxam CSB 4	<<locked>>	86%	37913	86%	**99	100%
Maxam CSB 5	<<locked>>	82%	39117	88%	**60	100%
Ramshot Silhouette	<<locked>>	76%	38798	88%	**37	100%
Ramshot True Blue	<<locked>>	71%	39508	89%	**63	100%
Ramshot Zip	<<locked>>	65%	38377	87%	**45	100%
ReloadSwiss RS 12	<<locked>>	80%	38551	87%	**45	100%
ReloadSwiss RS 14	<<locked>>	96%	11473	26%	**3	100%
ReloadSwiss RS 20 👍	<<locked>>	95%	39320	89%	**44	100%
ReloadSwiss RS 24	<<locked>>	95%	39247	89%	**26	90%
Rottweil P 801	<<locked>>	75%	38479	87%	**12	100%
Rottweil P 806	<<locked>>	97%	32909	74%	**03	98%
SNPE Vectan A0 👍	<<locked>>	95%	38798	88%	**88	100%
SNPE Vectan BA 9	<<locked>>	86%	39233	89%	**65	100%
SNPE Vectan BA10	<<locked>>	80%	39798	90%	**27	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	34026	77%	**81	99%
SNPE Vectan BA9 1/2	<<locked>>	89%	39740	90%	**81	100%
Shooters World Auto Pistol	<<locked>>	70%	39769	90%	**03	98%
[Shooters World Major Pistol]*	<<locked>>	87%	38667	87%	**26	87%
Somchem MP200	<<locked>>	85%	38493	87%	**27	100%
Somchem MS200 👍	<<locked>>	90%	38493	87%	**98	100%
Somchem S221	<<locked>>	79%	38334	87%	**93	93%
Vihtavuori 3N37	<<locked>>	94%	39494	89%	**83	100%
[Vihtavuori 3N38]*	<<locked>>	97%	29037	66%	**62	86%
[Vihtavuori N105]*	<<locked>>	96%	21538	49%	**73	85%
Vihtavuori N310	<<locked>>	70%	39247	89%	**27	100%
Vihtavuori N320	<<locked>>	85%	39262	89%	**22	100%
Vihtavuori N32C Tin Star	<<locked>>	95%	26556	60%	**02	100%
Vihtavuori N330	<<locked>>	86%	38174	86%	**78	100%
Vihtavuori N340 👍	<<locked>>	90%	38638	87%	**07	100%
Vihtavuori N350	<<locked>>	96%	38116	86%	**60	100%
Winchester 231	<<locked>>	72%	38377	87%	**45	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	72%	15040	34%	**30	81%
ADI AP 70N	<<locked>>	61%	24584	56%	**88	100%
ADI APS 350	<<locked>>	61%	24294	55%	**01	100%
ADI APS 450	<<locked>>	61%	22771	51%	**14	100%
ADI AS 30	<<locked>>	62%	21553	49%	**37	100%
ADI AS 50N	<<locked>>	61%	22423	51%	**96	100%
Accurate No. 2	<<locked>>	62%	19653	44%	**96	97%
Accurate No. 5	<<locked>>	60%	28181	64%	**25	94%
[Accurate No. 7]*	<<locked>>	77%	26411	60%	**39	80%
Accurate Solo 1000	<<locked>>	62%	21799	49%	**70	100%
Accurate Solo 1250	<<locked>>	62%	17535	40%	**47	100%
[Accurate TCM]*	<<locked>>	94%	35491	80%	**53	80%
Alliant BULLSEYE	<<locked>>	62%	22872	52%	**91	100%
[Alliant POWER PISTOL]*	<<locked>>	61%	15911	36%	**83	81%
Alliant UNIQUE	<<locked>>	61%	17100	39%	**76	97%
Baschieri & Pellagri 100	<<locked>>	62%	20001	45%	**50	100%
Hodgdon Clays	<<locked>>	61%	24627	56%	**17	100%
Hodgdon HP38	<<locked>>	61%	34330	78%	**93	100%
Hodgdon HS-6	<<locked>>	61%	23467	53%	**27	94%
Hodgdon Longshot	<<locked>>	61%	26136	59%	**80	97%
Hodgdon Universal	<<locked>>	62%	20798	47%	**22	100%
Hodgdon TrailBoss	<<locked>>	61%	6425	15%	**9	99%
Lovex D036	<<locked>>	60%	28137	64%	**25	94%
[Lovex D037.1]*	<<locked>>	77%	26411	60%	**39	80%
Lovex S011	<<locked>>	60%	25512	58%	**61	100%
Lovex S020	<<locked>>	60%	19421	44%	**06	100%
Maxam CSB 1	<<locked>>	60%	15882	36%	**04	100%
Maxam CSB 2	<<locked>>	61%	16694	38%	**47	100%
Maxam CSB 3	<<locked>>	62%	19377	44%	**60	100%
Maxam CSB 4	<<locked>>	61%	20334	46%	**60	100%
Maxam CSB 5	<<locked>>	61%	23192	52%	**63	100%
Ramshot Silhouette	<<locked>>	62%	24569	56%	**30	99%
Ramshot True Blue	<<locked>>	61%	27876	63%	**02	97%
Ramshot Zip	<<locked>>	61%	33098	75%	**86	100%
ReloadSwiss RS 12	<<locked>>	61%	22437	51%	**38	100%
ReloadSwiss RS 14	<<locked>>	63%	6295	14%	**6	95%
ReloadSwiss RS 20	<<locked>>	61%	15069	34%	**47	98%
[ReloadSwiss RS 24]*	<<locked>>	77%	22684	51%	**43	80%
Rottweil P 801	<<locked>>	62%	26890	61%	**68	100%
[Rottweil P 806]*	<<locked>>	65%	11197	25%	**14	81%
SNPE Vectan A0	<<locked>>	62%	16621	38%	**27	97%
SNPE Vectan BA 9	<<locked>>	61%	19624	44%	**79	100%
SNPE Vectan BA10	<<locked>>	61%	25715	58%	**56	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	13590	31%	**8	85%
SNPE Vectan BA9 1/2	<<locked>>	61%	19406	44%	**86	100%
Shooters World Auto Pistol	<<locked>>	60%	28137	64%	**25	94%
[Shooters World Major Pistol]*	<<locked>>	77%	26411	60%	**39	80%
Somchem MP200	<<locked>>	61%	19682	45%	**25	98%
Somchem MS200	<<locked>>	60%	17941	41%	**70	98%
[Somchem S221]*	<<locked>>	61%	21060	48%	**91	83%
[Vihtavuori 3N37]*	<<locked>>	61%	14968	34%	**40	89%
[Vihtavuori 3N38]*	<<locked>>	86%	21437	48%	**17	81%
[Vihtavuori N105]*	<<locked>>	91%	18695	42%	**98	81%
Vihtavuori N310	<<locked>>	61%	30908	70%	**35	100%
Vihtavuori N320	<<locked>>	61%	20479	46%	**76	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	12169	28%	**3	100%
Vihtavuori N330	<<locked>>	61%	18115	41%	**89	100%
Vihtavuori N340	<<locked>>	62%	17318	39%	**63	98%
[Vihtavuori N350]*	<<locked>>	61%	13735	31%	**04	88%
Winchester 231	<<locked>>	61%	27035	61%	**04	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