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

Recommended Powder(s): ADI AP 100, SNPE Vectan BA7 1/2, Vihtavuori 3N37, 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 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	1.566" \| 39.8mm
Seated Depth:	0.258" \| 6.5mm
Shank Seated Depth:	0.258" \| 6.5mm
Case Capacity:	25.6 Grains of Water \| 1.66 cm³
Primer Size:	Small Pistol Magnum (SPM)
Max. allowed Pressure:	43511 psi \| 3000 bar
LID:	LID_B5944_C513
Last updated:	2025-02-02

Load data for 124 loads in caliber .357 Magnum with .357 | 125gr | Sierra JHC SportsMaster bullet and 62 powders such as ADI AP 100, SNPE Vectan BA7 1/2, Vihtavuori 3N37, 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.

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%	39305	90%	**65	99%
ADI AP 70N	<<locked>>	69%	42119	97%	**76	100%
ADI AS 30	<<locked>>	82%	43047	99%	**71	100%
ADI AS 50N	<<locked>>	77%	42801	98%	**17	100%
Accurate No. 2	<<locked>>	77%	42380	97%	**03	100%
Accurate No. 5	<<locked>>	63%	42453	98%	**14	100%
Accurate No. 7	<<locked>>	77%	42250	97%	**60	93%
[Accurate No. 9]*	<<locked>>	86%	42351	97%	**40	87%
Accurate Solo 1000	<<locked>>	81%	42902	99%	**07	100%
Accurate Solo 1250	<<locked>>	82%	40814	94%	**44	100%
[Accurate TCM]*	<<locked>>	85%	41205	95%	**21	88%
[Alliant 2400]*	<<locked>>	96%	40785	94%	**47	84%
Alliant BLUE DOT	<<locked>>	96%	37826	87%	**81	90%
Alliant BULLSEYE	<<locked>>	74%	42264	97%	**45	100%
Alliant POWER PISTOL	<<locked>>	83%	43105	99%	**63	99%
Alliant UNIQUE	<<locked>>	83%	42206	97%	**35	100%
Baschieri & Pellagri 100	<<locked>>	79%	41698	96%	**94	100%
Hodgdon Clays	<<locked>>	79%	42888	99%	**12	100%
Hodgdon HS-6	<<locked>>	68%	42728	98%	**85	100%
Hodgdon Longshot	<<locked>>	65%	41858	96%	**72	100%
Hodgdon Universal	<<locked>>	78%	43381	100%	**86	100%
Hodgdon TrailBoss	<<locked>>	96%	18086	42%	**10	100%
Lovex D036	<<locked>>	63%	42395	97%	**14	100%
Lovex D037.1	<<locked>>	77%	42250	97%	**60	93%
[Lovex D037.2]*	<<locked>>	84%	41495	95%	**27	87%
Lovex S011	<<locked>>	69%	42148	97%	**27	100%
Lovex S020	<<locked>>	76%	42844	98%	**99	100%
Maxam CSB 1	<<locked>>	87%	42380	97%	**57	100%
Maxam CSB 2	<<locked>>	81%	40712	94%	**37	100%
Maxam CSB 3	<<locked>>	82%	41930	96%	**30	100%
Maxam CSB 4	<<locked>>	79%	41771	96%	**07	100%
Maxam CSB 5	<<locked>>	74%	40872	94%	**42	100%
[Ramshot Enforcer]*	<<locked>>	95%	39276	90%	**27	84%
Ramshot Silhouette	<<locked>>	69%	41887	96%	**42	100%
Ramshot True Blue	<<locked>>	63%	40959	94%	**45	100%
ReloadSwiss RS 12	<<locked>>	72%	42902	99%	**37	100%
ReloadSwiss RS 14	<<locked>>	92%	15969	37%	**4	100%
ReloadSwiss RS 20	<<locked>>	85%	43120	99%	**39	100%
ReloadSwiss RS 24	<<locked>>	84%	42163	97%	**54	95%
Rottweil P 801	<<locked>>	66%	41278	95%	**91	100%
Rottweil P 806	<<locked>>	88%	42395	97%	**57	100%
SNPE Vectan A0	<<locked>>	86%	41452	95%	**90	100%
SNPE Vectan BA 9	<<locked>>	78%	41655	96%	**57	100%
SNPE Vectan BA10	<<locked>>	74%	40886	94%	**16	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	92%	43337	100%	**68	100%
SNPE Vectan BA9 1/2	<<locked>>	80%	42540	98%	**70	100%
Shooters World Auto Pistol	<<locked>>	63%	42395	97%	**14	100%
[Shooters World Heavy Pistol]*	<<locked>>	84%	41495	95%	**27	87%
Shooters World Major Pistol	<<locked>>	77%	42250	97%	**60	93%
Somchem MP200	<<locked>>	77%	43265	99%	**49	100%
Somchem MS200	<<locked>>	82%	42395	97%	**09	100%
Somchem S221	<<locked>>	71%	43192	99%	**37	98%
Vihtavuori 3N37 👍	<<locked>>	84%	42714	98%	**81	100%
Vihtavuori 3N38	<<locked>>	96%	42685	98%	**34	96%
Vihtavuori N105	<<locked>>	96%	35650	82%	**88	97%
Vihtavuori N310	<<locked>>	63%	40553	93%	**02	100%
Vihtavuori N320	<<locked>>	76%	42032	97%	**07	100%
Vihtavuori N32C Tin Star	<<locked>>	97%	37246	86%	**70	100%
Vihtavuori N330	<<locked>>	77%	41234	95%	**60	100%
Vihtavuori N340	<<locked>>	82%	42366	97%	**12	100%
Vihtavuori N350 👍	<<locked>>	86%	40930	94%	**52	100%
Winchester 231	<<locked>>	66%	41510	95%	**40	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	16186	37%	**99	86%
ADI AP 70N	<<locked>>	62%	34360	79%	**78	100%
ADI AS 30	<<locked>>	61%	27398	63%	**75	100%
ADI AS 50N	<<locked>>	62%	29747	68%	**53	100%
Accurate No. 2	<<locked>>	61%	26397	61%	**80	100%
Accurate No. 5	<<locked>>	61%	40074	92%	**81	100%
[Accurate No. 7]*	<<locked>>	61%	23844	55%	**32	82%
[Accurate No. 9]*	<<locked>>	76%	30429	70%	**57	81%
Accurate Solo 1000	<<locked>>	62%	27572	63%	**11	100%
Accurate Solo 1250	<<locked>>	62%	24323	56%	**14	100%
[Accurate TCM]*	<<locked>>	73%	27760	64%	**07	81%
[Alliant 2400]*	<<locked>>	91%	34650	80%	**45	80%
[Alliant BLUE DOT]*	<<locked>>	76%	23163	53%	**06	81%
Alliant BULLSEYE	<<locked>>	61%	29849	69%	**68	100%
Alliant POWER PISTOL	<<locked>>	61%	23090	53%	**06	91%
Alliant UNIQUE	<<locked>>	61%	24584	56%	**70	100%
Baschieri & Pellagri 100	<<locked>>	62%	26629	61%	**01	100%
Hodgdon Clays	<<locked>>	61%	28906	66%	**38	100%
Hodgdon HS-6	<<locked>>	61%	33924	78%	**67	100%
Hodgdon Longshot	<<locked>>	61%	37246	86%	**09	100%
Hodgdon Universal	<<locked>>	61%	28747	66%	**93	100%
Hodgdon TrailBoss	<<locked>>	60%	9587	22%	**8	100%
Lovex D036	<<locked>>	61%	40016	92%	**78	100%
[Lovex D037.1]*	<<locked>>	61%	23844	55%	**32	82%
[Lovex D037.2]*	<<locked>>	74%	29921	69%	**44	81%
Lovex S011	<<locked>>	61%	33533	77%	**29	100%
Lovex S020	<<locked>>	61%	27644	64%	**02	100%
Maxam CSB 1	<<locked>>	61%	22452	52%	**75	100%
Maxam CSB 2	<<locked>>	61%	24555	56%	**14	100%
Maxam CSB 3	<<locked>>	61%	25280	58%	**01	100%
Maxam CSB 4	<<locked>>	61%	26731	61%	**07	100%
Maxam CSB 5	<<locked>>	61%	30240	69%	**04	100%
[Ramshot Enforcer]*	<<locked>>	90%	32982	76%	**35	81%
Ramshot Silhouette	<<locked>>	61%	32735	75%	**17	100%
Ramshot True Blue	<<locked>>	61%	38609	89%	**26	100%
ReloadSwiss RS 12	<<locked>>	62%	32735	75%	**12	100%
ReloadSwiss RS 14	<<locked>>	61%	9456	22%	**4	100%
ReloadSwiss RS 20	<<locked>>	61%	22698	52%	**43	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	20697	48%	**43	83%
Rottweil P 801	<<locked>>	61%	36085	83%	**25	100%
Rottweil P 806	<<locked>>	61%	18434	42%	**30	93%
SNPE Vectan A0	<<locked>>	62%	22800	52%	**01	100%
SNPE Vectan BA 9	<<locked>>	61%	26237	60%	**47	100%
SNPE Vectan BA10	<<locked>>	61%	30545	70%	**84	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	19537	45%	**71	95%
SNPE Vectan BA9 1/2	<<locked>>	61%	26295	60%	**47	100%
Shooters World Auto Pistol	<<locked>>	61%	40016	92%	**78	100%
[Shooters World Heavy Pistol]*	<<locked>>	74%	29921	69%	**44	81%
[Shooters World Major Pistol]*	<<locked>>	61%	23844	55%	**32	82%
Somchem MP200	<<locked>>	61%	27311	63%	**19	100%
Somchem MS200	<<locked>>	60%	24555	56%	**47	100%
Somchem S221	<<locked>>	61%	31140	72%	**40	94%
Vihtavuori 3N37	<<locked>>	61%	22481	52%	**60	98%
[Vihtavuori 3N38]*	<<locked>>	63%	17448	40%	**58	81%
[Vihtavuori N105]*	<<locked>>	67%	15229	35%	**42	81%
Vihtavuori N310	<<locked>>	60%	37739	87%	**66	100%
Vihtavuori N320	<<locked>>	61%	28529	66%	**37	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	17869	41%	**4	100%
Vihtavuori N330	<<locked>>	61%	26237	60%	**60	100%
Vihtavuori N340	<<locked>>	61%	24134	55%	**47	100%
Vihtavuori N350	<<locked>>	61%	20740	48%	**20	97%
Winchester 231	<<locked>>	61%	36651	84%	**81	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.