Load data for .357 SIG + .355 | 125gr | Sierra JHP SportsMaster

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:	.355 \| 125gr \| Sierra JHP SportsMaster
Manufacturer SKU:	8125
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.355" \| 9.02mm
Bullet Length:	0.542" \| 13.8mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.279" \| 7.1mm
Shank Seated Depth:	0.279" \| 7.1mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B5939_C518
Last updated:	2025-02-02

Load data for 116 loads in caliber .357 SIG with .355 | 125gr | Sierra JHP SportsMaster 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>>	97%	27122	61%	**83	91%
ADI AP 70N	<<locked>>	79%	39233	89%	**75	100%
ADI APS 350	<<locked>>	84%	39363	89%	**68	100%
ADI APS 450	<<locked>>	85%	38348	87%	**98	100%
ADI AS 30	<<locked>>	88%	38435	87%	**50	100%
ADI AS 50N	<<locked>>	85%	39015	88%	**09	100%
Accurate No. 2	<<locked>>	85%	38798	88%	**68	100%
Accurate No. 5	<<locked>>	71%	39436	89%	**80	98%
[Accurate No. 7]*	<<locked>>	89%	39363	89%	**26	87%
Accurate Solo 1000	<<locked>>	87%	38653	87%	**80	100%
Accurate Solo 1250	<<locked>>	94%	39204	89%	**55	100%
Alliant BULLSEYE	<<locked>>	83%	38885	88%	**27	100%
Alliant POWER PISTOL	<<locked>>	94%	39291	89%	**32	96%
Alliant UNIQUE 👍	<<locked>>	95%	39523	89%	**44	100%
Baschieri & Pellagri 100	<<locked>>	87%	37913	86%	**76	100%
Hodgdon Clays	<<locked>>	84%	39784	90%	**91	100%
Hodgdon HP38	<<locked>>	65%	38551	87%	**29	100%
Hodgdon HS-6	<<locked>>	77%	39276	89%	**53	99%
Hodgdon Longshot	<<locked>>	73%	38522	87%	**40	99%
Hodgdon Universal	<<locked>>	87%	39233	89%	**75	100%
Hodgdon TrailBoss	<<locked>>	95%	11951	27%	**0	100%
Lovex D036	<<locked>>	71%	39392	89%	**80	98%
[Lovex D037.1]*	<<locked>>	89%	39363	89%	**26	87%
Lovex S011	<<locked>>	75%	38072	86%	**09	100%
Lovex S020	<<locked>>	85%	38624	87%	**81	100%
Maxam CSB 1	<<locked>>	97%	38464	87%	**42	100%
Maxam CSB 2	<<locked>>	94%	38899	88%	**55	100%
Maxam CSB 3	<<locked>>	90%	38000	86%	**09	100%
Maxam CSB 4	<<locked>>	87%	38479	87%	**93	100%
Maxam CSB 5	<<locked>>	84%	39552	89%	**50	100%
Ramshot Silhouette	<<locked>>	77%	37971	86%	**21	100%
Ramshot True Blue	<<locked>>	72%	39204	89%	**44	100%
Ramshot Zip	<<locked>>	67%	38856	88%	**39	100%
ReloadSwiss RS 12	<<locked>>	82%	38914	88%	**42	100%
ReloadSwiss RS 14	<<locked>>	93%	10573	24%	**7	100%
ReloadSwiss RS 20 👍	<<locked>>	96%	38203	86%	**24	100%
ReloadSwiss RS 24	<<locked>>	97%	39334	89%	**12	90%
Rottweil P 801	<<locked>>	76%	38928	88%	**06	100%
Rottweil P 806	<<locked>>	96%	30139	68%	**50	97%
SNPE Vectan A0 👍	<<locked>>	96%	37985	86%	**68	100%
SNPE Vectan BA 9	<<locked>>	87%	38377	87%	**39	100%
SNPE Vectan BA10	<<locked>>	79%	38319	87%	**98	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	33881	77%	**65	98%
SNPE Vectan BA9 1/2	<<locked>>	89%	38653	87%	**58	100%
Shooters World Auto Pistol	<<locked>>	71%	39392	89%	**80	98%
[Shooters World Major Pistol]*	<<locked>>	89%	39363	89%	**26	87%
Somchem MP200	<<locked>>	87%	39465	89%	**27	100%
Somchem MS200 👍	<<locked>>	92%	39262	89%	**01	100%
Somchem S221	<<locked>>	81%	38435	87%	**83	93%
Vihtavuori 3N37	<<locked>>	95%	38870	88%	**60	100%
[Vihtavuori 3N38]*	<<locked>>	97%	27485	62%	**25	85%
Vihtavuori N310	<<locked>>	71%	39233	89%	**14	100%
Vihtavuori N320	<<locked>>	87%	39726	90%	**12	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	26847	61%	**99	100%
Vihtavuori N330	<<locked>>	88%	38972	88%	**71	100%
Vihtavuori N340 👍	<<locked>>	93%	39682	90%	**04	100%
Vihtavuori N350	<<locked>>	95%	35549	80%	**17	99%
Winchester 231	<<locked>>	74%	38856	88%	**39	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	74%	15113	34%	**20	80%
ADI AP 70N	<<locked>>	62%	24656	56%	**84	100%
ADI APS 350	<<locked>>	61%	23815	54%	**4	100%
ADI APS 450	<<locked>>	61%	22423	51%	**01	100%
ADI AS 30	<<locked>>	62%	21074	48%	**24	100%
ADI AS 50N	<<locked>>	62%	22118	50%	**83	100%
Accurate No. 2	<<locked>>	60%	18492	42%	**60	96%
Accurate No. 5	<<locked>>	61%	27688	63%	**96	93%
[Accurate No. 7]*	<<locked>>	79%	27615	62%	**48	81%
Accurate Solo 1000	<<locked>>	60%	20175	46%	**30	100%
Accurate Solo 1250	<<locked>>	60%	16288	37%	**07	100%
Alliant BULLSEYE	<<locked>>	60%	21364	48%	**52	99%
[Alliant POWER PISTOL]*	<<locked>>	62%	15954	36%	**73	80%
Alliant UNIQUE	<<locked>>	60%	16186	37%	**43	96%
Baschieri & Pellagri 100	<<locked>>	60%	18536	42%	**14	100%
Hodgdon Clays	<<locked>>	61%	24221	55%	**04	100%
Hodgdon HP38	<<locked>>	61%	33185	75%	**66	100%
Hodgdon HS-6	<<locked>>	61%	22713	51%	**01	93%
Hodgdon Longshot	<<locked>>	61%	25585	58%	**50	96%
Hodgdon Universal	<<locked>>	60%	19522	44%	**86	100%
Hodgdon TrailBoss	<<locked>>	63%	6556	15%	**3	99%
Lovex D036	<<locked>>	61%	27630	62%	**96	93%
[Lovex D037.1]*	<<locked>>	79%	27615	62%	**48	81%
Lovex S011	<<locked>>	61%	25585	58%	**45	100%
Lovex S020	<<locked>>	61%	19392	44%	**99	99%
Maxam CSB 1	<<locked>>	61%	15722	36%	**8	100%
Maxam CSB 2	<<locked>>	61%	16259	37%	**33	100%
Maxam CSB 3	<<locked>>	60%	17883	40%	**20	100%
Maxam CSB 4	<<locked>>	61%	20189	46%	**47	100%
Maxam CSB 5	<<locked>>	61%	23032	52%	**47	100%
Ramshot Silhouette	<<locked>>	61%	23612	53%	**01	99%
Ramshot True Blue	<<locked>>	60%	26005	59%	**53	96%
Ramshot Zip	<<locked>>	60%	31952	72%	**57	100%
ReloadSwiss RS 12	<<locked>>	62%	22307	50%	**29	100%
ReloadSwiss RS 14	<<locked>>	66%	6454	15%	**9	95%
ReloadSwiss RS 20	<<locked>>	62%	14837	34%	**30	97%
[ReloadSwiss RS 24]*	<<locked>>	79%	23409	53%	**50	81%
Rottweil P 801	<<locked>>	61%	25324	57%	**42	100%
[Rottweil P 806]*	<<locked>>	67%	11124	25%	**04	80%
SNPE Vectan A0	<<locked>>	60%	15519	35%	**8	96%
SNPE Vectan BA 9	<<locked>>	62%	19595	44%	**70	100%
SNPE Vectan BA10	<<locked>>	62%	25643	58%	**50	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	60%	12763	29%	**5	84%
SNPE Vectan BA9 1/2	<<locked>>	62%	19276	44%	**70	100%
Shooters World Auto Pistol	<<locked>>	61%	27630	62%	**96	93%
[Shooters World Major Pistol]*	<<locked>>	79%	27615	62%	**48	81%
Somchem MP200	<<locked>>	62%	19638	44%	**12	97%
Somchem MS200	<<locked>>	61%	17854	40%	**60	98%
[Somchem S221]*	<<locked>>	61%	20363	46%	**65	82%
[Vihtavuori 3N37]*	<<locked>>	61%	14243	32%	**07	87%
[Vihtavuori 3N38]*	<<locked>>	89%	21828	49%	**14	80%
Vihtavuori N310	<<locked>>	62%	30734	69%	**22	100%
Vihtavuori N320	<<locked>>	61%	20262	46%	**63	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	11835	27%	**0	100%
Vihtavuori N330	<<locked>>	61%	18072	41%	**73	100%
Vihtavuori N340	<<locked>>	60%	16230	37%	**27	97%
[Vihtavuori N350]*	<<locked>>	61%	12952	29%	**1	86%
Winchester 231	<<locked>>	62%	27180	61%	**91	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