Load data for .357 SIG + .357 | 125gr | Sierra JHC SportsMaster

Recommended Powder(s): Alliant UNIQUE, SNPE Vectan A0, Vihtavuori 3N37, Vihtavuori N340, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 125gr \| Sierra JHC SportsMaster
Manufacturer SKU:	8320
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.534" \| 13.6mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.271" \| 6.9mm
Shank Seated Depth:	0.271" \| 6.9mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B5944_C518
Last updated:	2025-02-02

Load data for 120 loads in caliber .357 SIG with .357 | 125gr | Sierra JHC SportsMaster bullet and 60 powders such as Alliant UNIQUE, SNPE Vectan A0, Vihtavuori 3N37, Vihtavuori N340, Vihtavuori N350. 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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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 AP 100	<<locked>>	96%	28558	65%	**99	92%
ADI AP 70N	<<locked>>	76%	39349	89%	**65	100%
ADI APS 350	<<locked>>	80%	37753	85%	**48	100%
ADI APS 450	<<locked>>	84%	38754	88%	**01	100%
ADI AS 30	<<locked>>	85%	37898	86%	**34	100%
ADI AS 50N	<<locked>>	82%	38812	88%	**93	100%
Accurate No. 2	<<locked>>	82%	37536	85%	**48	100%
Accurate No. 5	<<locked>>	69%	39276	89%	**67	98%
[Accurate No. 7]*	<<locked>>	87%	39610	90%	**19	87%
Accurate Solo 1000	<<locked>>	84%	37449	85%	**63	100%
Accurate Solo 1250	<<locked>>	91%	38479	87%	**39	100%
[Accurate TCM]*	<<locked>>	96%	39494	89%	**86	82%
Alliant BULLSEYE	<<locked>>	80%	38261	86%	**07	100%
Alliant POWER PISTOL	<<locked>>	92%	39117	88%	**16	96%
Alliant UNIQUE 👍	<<locked>>	92%	39624	90%	**34	100%
Baschieri & Pellagri 100	<<locked>>	86%	39044	88%	**80	100%
Hodgdon Clays	<<locked>>	80%	38609	87%	**71	100%
Hodgdon HP38	<<locked>>	63%	37855	86%	**09	100%
Hodgdon HS-6	<<locked>>	75%	39233	89%	**50	99%
Hodgdon Longshot	<<locked>>	71%	38392	87%	**34	99%
Hodgdon Universal	<<locked>>	84%	39349	89%	**65	100%
Hodgdon TrailBoss	<<locked>>	94%	13909	31%	**9	100%
Lovex D036	<<locked>>	69%	39218	89%	**67	97%
[Lovex D037.1]*	<<locked>>	87%	39610	90%	**19	87%
Lovex S011	<<locked>>	74%	38957	88%	**09	100%
Lovex S020	<<locked>>	82%	38116	86%	**68	100%
Maxam CSB 1	<<locked>>	96%	39726	90%	**48	100%
Maxam CSB 2	<<locked>>	91%	39320	89%	**48	100%
Maxam CSB 3	<<locked>>	90%	39523	89%	**16	100%
Maxam CSB 4	<<locked>>	87%	39610	90%	**96	100%
Maxam CSB 5	<<locked>>	80%	38870	88%	**34	100%
Ramshot Silhouette	<<locked>>	76%	39769	90%	**30	100%
Ramshot True Blue	<<locked>>	70%	39073	88%	**37	100%
Ramshot Zip	<<locked>>	64%	38479	87%	**25	100%
ReloadSwiss RS 12	<<locked>>	79%	39131	88%	**29	100%
ReloadSwiss RS 14	<<locked>>	96%	13343	30%	**6	100%
ReloadSwiss RS 20	<<locked>>	95%	39769	90%	**34	100%
ReloadSwiss RS 24	<<locked>>	94%	39392	89%	**03	90%
Rottweil P 801	<<locked>>	74%	39117	88%	**93	100%
Rottweil P 806	<<locked>>	97%	34316	78%	**99	98%
SNPE Vectan A0 👍	<<locked>>	95%	38972	88%	**71	100%
SNPE Vectan BA 9	<<locked>>	86%	39450	89%	**42	100%
SNPE Vectan BA10	<<locked>>	78%	38740	88%	**01	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	35128	79%	**71	99%
SNPE Vectan BA9 1/2	<<locked>>	86%	38464	87%	**42	100%
Shooters World Auto Pistol	<<locked>>	69%	39218	89%	**67	97%
[Shooters World Major Pistol]*	<<locked>>	87%	39610	90%	**19	87%
Somchem MP200	<<locked>>	85%	39204	89%	**17	100%
Somchem MS200	<<locked>>	89%	38870	88%	**81	100%
Somchem S221	<<locked>>	79%	38957	88%	**73	93%
Vihtavuori 3N37 👍	<<locked>>	93%	38986	88%	**57	100%
[Vihtavuori 3N38]*	<<locked>>	96%	29399	66%	**39	86%
[Vihtavuori N105]*	<<locked>>	96%	23221	52%	**80	85%
Vihtavuori N310	<<locked>>	68%	38435	87%	**94	100%
Vihtavuori N320	<<locked>>	83%	39537	89%	**99	100%
Vihtavuori N32C Tin Star	<<locked>>	95%	28964	65%	**06	100%
Vihtavuori N330	<<locked>>	85%	38261	86%	**58	100%
Vihtavuori N340 👍	<<locked>>	90%	39175	89%	**91	100%
Vihtavuori N350 👍	<<locked>>	96%	38682	87%	**47	100%
Winchester 231	<<locked>>	72%	38479	87%	**25	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	69%	15171	34%	**04	80%
ADI AP 70N	<<locked>>	61%	26731	60%	**94	100%
ADI APS 350	<<locked>>	61%	24787	56%	**8	100%
ADI APS 450	<<locked>>	61%	23453	53%	**04	100%
ADI AS 30	<<locked>>	62%	22597	51%	**30	100%
ADI AS 50N	<<locked>>	61%	23815	54%	**93	100%
Accurate No. 2	<<locked>>	62%	20972	47%	**02	97%
Accurate No. 5	<<locked>>	62%	30197	68%	**39	95%
[Accurate No. 7]*	<<locked>>	76%	26977	61%	**25	80%
Accurate Solo 1000	<<locked>>	62%	22640	51%	**63	100%
Accurate Solo 1250	<<locked>>	62%	18811	43%	**47	100%
[Accurate TCM]*	<<locked>>	94%	36085	82%	**44	80%
Alliant BULLSEYE	<<locked>>	62%	23975	54%	**91	100%
[Alliant POWER PISTOL]*	<<locked>>	62%	17521	40%	**96	82%
Alliant UNIQUE	<<locked>>	62%	18898	43%	**86	98%
Baschieri & Pellagri 100	<<locked>>	62%	21437	48%	**50	100%
Hodgdon Clays	<<locked>>	61%	24961	56%	**04	100%
Hodgdon HP38	<<locked>>	62%	36216	82%	**89	100%
Hodgdon HS-6	<<locked>>	62%	25744	58%	**40	94%
Hodgdon Longshot	<<locked>>	61%	27166	61%	**66	97%
Hodgdon Universal	<<locked>>	62%	22916	52%	**29	100%
Hodgdon TrailBoss	<<locked>>	63%	8383	19%	**2	100%
Lovex D036	<<locked>>	62%	30139	68%	**39	95%
[Lovex D037.1]*	<<locked>>	76%	26977	61%	**25	80%
Lovex S011	<<locked>>	60%	26934	61%	**55	100%
Lovex S020	<<locked>>	61%	21306	48%	**15	100%
Maxam CSB 1	<<locked>>	60%	17187	39%	**01	100%
Maxam CSB 2	<<locked>>	61%	18492	42%	**53	100%
Maxam CSB 3	<<locked>>	62%	20479	46%	**56	100%
Maxam CSB 4	<<locked>>	61%	21712	49%	**56	100%
Maxam CSB 5	<<locked>>	61%	24236	55%	**53	100%
Ramshot Silhouette	<<locked>>	61%	25019	57%	**17	99%
Ramshot True Blue	<<locked>>	61%	28689	65%	**89	97%
Ramshot Zip	<<locked>>	61%	34954	79%	**83	100%
ReloadSwiss RS 12	<<locked>>	61%	24671	56%	**42	100%
ReloadSwiss RS 14	<<locked>>	62%	7963	18%	**6	98%
ReloadSwiss RS 20	<<locked>>	61%	16708	38%	**60	99%
[ReloadSwiss RS 24]*	<<locked>>	75%	23134	52%	**27	80%
Rottweil P 801	<<locked>>	60%	27514	62%	**52	100%
[Rottweil P 806]*	<<locked>>	61%	11748	27%	**4	81%
SNPE Vectan A0	<<locked>>	62%	17796	40%	**27	97%
SNPE Vectan BA 9	<<locked>>	61%	21089	48%	**86	100%
SNPE Vectan BA10	<<locked>>	61%	26368	60%	**50	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	15026	34%	**8	87%
SNPE Vectan BA9 1/2	<<locked>>	61%	20972	47%	**89	100%
Shooters World Auto Pistol	<<locked>>	62%	30139	68%	**39	95%
[Shooters World Major Pistol]*	<<locked>>	76%	26977	61%	**25	80%
Somchem MP200	<<locked>>	61%	21422	48%	**35	98%
Somchem MS200	<<locked>>	61%	19580	44%	**76	99%
[Somchem S221]*	<<locked>>	61%	22350	51%	**88	84%
Vihtavuori 3N37	<<locked>>	62%	16911	38%	**60	90%
[Vihtavuori 3N38]*	<<locked>>	84%	21988	50%	**98	80%
[Vihtavuori N105]*	<<locked>>	88%	18521	42%	**65	80%
Vihtavuori N310	<<locked>>	61%	32242	73%	**25	100%
Vihtavuori N320	<<locked>>	61%	22104	50%	**76	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	13808	31%	**6	100%
Vihtavuori N330	<<locked>>	61%	19914	45%	**96	100%
Vihtavuori N340	<<locked>>	62%	18884	43%	**76	98%
[Vihtavuori N350]*	<<locked>>	62%	15432	35%	**20	89%
Winchester 231	<<locked>>	61%	28645	65%	**01	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