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

Recommended Powder(s):

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:	2026-01-21

Load data for 128 loads in caliber .357 Magnum with .357 | 125gr | Sierra JHC SportsMaster bullet and 64 powder(s). 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>>	95%	38319	88%	**49	99%
ADI AP 70N	<<locked>>	65%	38174	88%	**24	100%
ADI APS 350	<<locked>>	73%	37884	87%	**40	100%
ADI APS 450	<<locked>>	76%	38406	88%	**83	100%
ADI AS 30	<<locked>>	76%	38667	89%	**25	100%
ADI AS 50N	<<locked>>	72%	38624	89%	**75	100%
Accurate No. 2	<<locked>>	73%	37565	86%	**47	100%
Accurate No. 7	<<locked>>	75%	38856	89%	**11	92%
[Accurate No. 9]*	<<locked>>	83%	37855	87%	**78	85%
Accurate Solo 1000	<<locked>>	76%	38725	89%	**65	100%
Accurate Solo 1250	<<locked>>	79%	38101	88%	**14	100%
[Accurate TCM]*	<<locked>>	83%	38928	89%	**88	87%
[Alliant 2400]*	<<locked>>	94%	38566	89%	**14	82%
Alliant BLUE DOT	<<locked>>	97%	39146	90%	**01	91%
Alliant BULLSEYE	<<locked>>	70%	38377	88%	**90	100%
Alliant POWER PISTOL	<<locked>>	80%	39146	90%	**08	98%
Alliant Sport Pistol	<<locked>>	65%	38159	88%	**90	100%
Alliant UNIQUE	<<locked>>	79%	38363	88%	**90	100%
Baschieri & Pellagri 100	<<locked>>	76%	38798	89%	**58	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	94%	38406	88%	**65	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	72%	39030	90%	**78	100%
Hodgdon Clays	<<locked>>	73%	38450	88%	**63	100%
Hodgdon HS-6	<<locked>>	65%	37927	87%	**22	100%
Hodgdon Universal	<<locked>>	72%	38174	88%	**24	100%
Hodgdon CFE Pistol	<<locked>>	75%	37913	87%	**24	100%
Hodgdon TrailBoss	<<locked>>	96%	18086	42%	**10	100%
Lovex D037.1	<<locked>>	75%	38856	89%	**11	92%
[Lovex D037.2]*	<<locked>>	82%	37855	87%	**78	85%
Lovex S011	<<locked>>	66%	39073	90%	**98	100%
Lovex S020	<<locked>>	72%	38377	88%	**47	100%
Maxam CSB 1	<<locked>>	83%	38580	89%	**07	100%
Maxam CSB 2	<<locked>>	78%	38189	88%	**01	100%
Maxam CSB 3	<<locked>>	78%	37884	87%	**85	100%
Maxam CSB 4	<<locked>>	76%	38928	89%	**71	100%
Maxam CSB 5	<<locked>>	71%	37971	87%	**09	100%
[Ramshot Enforcer]*	<<locked>>	94%	37869	87%	**04	83%
Ramshot Silhouette	<<locked>>	66%	38261	88%	**96	100%
ReloadSwiss RS 12	<<locked>>	68%	38827	89%	**98	100%
ReloadSwiss RS 14	<<locked>>	94%	16694	38%	**10	100%
ReloadSwiss RS 20	<<locked>>	81%	39146	90%	**99	100%
ReloadSwiss RS 24	<<locked>>	81%	38464	88%	**98	94%
Rottweil P 801	<<locked>>	64%	38682	89%	**58	100%
Rottweil P 806	<<locked>>	84%	38189	88%	**94	100%
SNPE Vectan A0	<<locked>>	83%	39131	90%	**60	100%
SNPE Vectan BA 9	<<locked>>	75%	38000	87%	**11	100%
SNPE Vectan BA10	<<locked>>	71%	38392	88%	**83	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	87%	38537	89%	**09	100%
SNPE Vectan BA9 1/2	<<locked>>	76%	38551	89%	**27	100%
SNPE Vectan SP 2 👍	<<locked>>	74%	38943	90%	**08	99%
[Shooters World Heavy Pistol]*	<<locked>>	82%	37855	87%	**78	85%
Shooters World Major Pistol	<<locked>>	75%	38856	89%	**11	92%
Somchem MP200	<<locked>>	73%	37898	87%	**86	100%
Somchem MS200	<<locked>>	78%	38566	89%	**67	100%
Somchem S221	<<locked>>	68%	39059	90%	**72	97%
Vihtavuori 3N37 👍	<<locked>>	80%	38087	88%	**29	100%
Vihtavuori 3N38	<<locked>>	91%	37782	87%	**62	94%
Vihtavuori N105	<<locked>>	96%	35650	82%	**88	97%
Vihtavuori N310	<<locked>>	62%	39146	90%	**89	100%
Vihtavuori N320	<<locked>>	72%	37594	86%	**55	100%
Vihtavuori N32C Tin Star	<<locked>>	97%	37246	86%	**70	100%
Vihtavuori N330	<<locked>>	74%	38624	89%	**30	100%
Vihtavuori N340	<<locked>>	78%	38363	88%	**67	100%
Vihtavuori N350 👍	<<locked>>	83%	38159	88%	**26	100%
Winchester 231	<<locked>>	64%	38957	90%	**14	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 APS 350	<<locked>>	61%	28413	65%	**19	100%
ADI APS 450	<<locked>>	61%	27209	63%	**35	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. 7]*	<<locked>>	61%	23844	55%	**32	82%
[Accurate No. 9]*	<<locked>>	75%	29921	69%	**44	81%
Accurate Solo 1000	<<locked>>	62%	27572	63%	**11	100%
Accurate Solo 1250	<<locked>>	62%	24323	56%	**14	100%
[Accurate TCM]*	<<locked>>	72%	27282	63%	**94	80%
[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 Sport Pistol	<<locked>>	61%	33330	77%	**21	100%
Alliant UNIQUE	<<locked>>	61%	24584	56%	**70	100%
Baschieri & Pellagri 100	<<locked>>	62%	26629	61%	**01	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	61%	17695	41%	**50	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	61%	28326	65%	**47	100%
Hodgdon Clays	<<locked>>	61%	28906	66%	**38	100%
Hodgdon HS-6	<<locked>>	61%	33924	78%	**67	100%
Hodgdon Universal	<<locked>>	61%	28747	66%	**93	100%
Hodgdon CFE Pistol	<<locked>>	61%	26194	60%	**50	100%
Hodgdon TrailBoss	<<locked>>	83%	14649	34%	**2	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%
ReloadSwiss RS 12	<<locked>>	62%	32735	75%	**12	100%
ReloadSwiss RS 14	<<locked>>	82%	13619	31%	**2	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%
SNPE Vectan SP 2	<<locked>>	61%	25991	60%	**85	95%
[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>>	66%	14895	34%	**29	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.

<<locked>>... you need to buy an access license to unlock the data