Load data for .357 Magnum + .357 | 158gr | Speer SP MAG GD

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| Speer SP MAG GD
Manufacturer SKU:	4215
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	<<locked>>
Caliber:	.357 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
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_B6225_C513
Last updated:	2026-01-30

Load data for 130 loads in caliber .357 Magnum with .357 | 158gr | Speer SP MAG GD bullet and 65 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>>	96%	36419	84%	**12	99%
ADI AP 70N	<<locked>>	69%	39015	90%	**20	100%
ADI APS 350	<<locked>>	75%	37913	87%	**47	100%
ADI APS 450	<<locked>>	77%	38319	88%	**83	100%
ADI AS 30	<<locked>>	78%	37927	87%	**19	100%
ADI AS 50N	<<locked>>	75%	38479	88%	**65	100%
Accurate No. 2	<<locked>>	75%	38856	89%	**43	100%
Accurate No. 7	<<locked>>	77%	37797	87%	**85	94%
[Accurate No. 9]*	<<locked>>	85%	37623	86%	**62	87%
Accurate Solo 1000	<<locked>>	76%	37695	87%	**42	100%
Accurate Solo 1250	<<locked>>	82%	38464	88%	**01	100%
[Accurate TCM]*	<<locked>>	85%	38145	88%	**71	89%
[Alliant 2400]*	<<locked>>	96%	37260	86%	**85	85%
Alliant BE-86	<<locked>>	80%	38406	88%	**91	100%
Alliant BLUE DOT	<<locked>>	96%	35085	81%	**32	91%
Alliant BULLSEYE	<<locked>>	72%	38696	89%	**76	100%
Alliant Herco	<<locked>>	95%	36956	85%	**60	100%
Alliant POWER PISTOL	<<locked>>	81%	38116	88%	**75	99%
Alliant Sport Pistol	<<locked>>	66%	37420	86%	**63	100%
Alliant UNIQUE	<<locked>>	83%	39015	90%	**83	100%
Baschieri & Pellagri 100	<<locked>>	78%	38667	89%	**52	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	96%	37782	87%	**58	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	74%	38885	89%	**78	100%
Hodgdon Clays	<<locked>>	75%	38667	89%	**66	100%
Hodgdon HS-6	<<locked>>	67%	38653	89%	**19	100%
Hodgdon Longshot	<<locked>>	64%	38319	88%	**06	100%
Hodgdon Universal	<<locked>>	76%	39015	90%	**20	100%
Hodgdon CFE Pistol	<<locked>>	78%	39146	90%	**17	100%
Lovex D037.1	<<locked>>	77%	37797	87%	**85	94%
[Lovex D037.2]*	<<locked>>	84%	37623	86%	**62	87%
Lovex S011	<<locked>>	67%	38986	90%	**81	100%
Lovex S020	<<locked>>	73%	37913	87%	**27	100%
Maxam CSB 1	<<locked>>	84%	37623	86%	**91	100%
Maxam CSB 2	<<locked>>	82%	39117	90%	**07	100%
Maxam CSB 3	<<locked>>	79%	37594	86%	**68	100%
Maxam CSB 4	<<locked>>	77%	37840	87%	**52	100%
Maxam CSB 5	<<locked>>	74%	39102	90%	**15	100%
[Ramshot Enforcer]*	<<locked>>	97%	36970	85%	**98	86%
Ramshot Silhouette	<<locked>>	68%	38493	88%	**76	100%
Ramshot True Blue	<<locked>>	63%	38682	89%	**99	100%
ReloadSwiss RS 12	<<locked>>	70%	37565	86%	**78	100%
ReloadSwiss RS 20	<<locked>>	83%	38116	88%	**66	100%
ReloadSwiss RS 24	<<locked>>	84%	38348	88%	**75	96%
Rottweil P 801	<<locked>>	67%	38725	89%	**55	100%
Rottweil P 806	<<locked>>	88%	38014	87%	**88	100%
SNPE Vectan A0	<<locked>>	85%	38508	89%	**30	100%
SNPE Vectan BA 9	<<locked>>	77%	38377	88%	**04	100%
SNPE Vectan BA10	<<locked>>	72%	38305	88%	**83	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	90%	39073	90%	**02	100%
SNPE Vectan BA9 1/2	<<locked>>	77%	37811	87%	**04	100%
SNPE Vectan SP 2 👍	<<locked>>	77%	38986	90%	**91	100%
[Shooters World Heavy Pistol]*	<<locked>>	84%	37623	86%	**62	87%
Shooters World Major Pistol	<<locked>>	77%	37797	87%	**85	94%
Somchem MP200	<<locked>>	75%	38261	88%	**66	100%
Somchem MS200	<<locked>>	80%	38261	88%	**40	100%
Somchem S221	<<locked>>	71%	39001	90%	**62	98%
Vihtavuori 3N37 👍	<<locked>>	83%	39030	90%	**22	100%
Vihtavuori 3N38	<<locked>>	95%	38348	88%	**58	96%
Vihtavuori N105	<<locked>>	96%	31575	73%	**32	98%
Vihtavuori N320	<<locked>>	74%	37695	87%	**52	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	33997	78%	**53	100%
Vihtavuori N330	<<locked>>	77%	38609	89%	**20	100%
Vihtavuori N340	<<locked>>	80%	38435	88%	**47	100%
Vihtavuori N350 👍	<<locked>>	85%	37826	87%	**99	100%
Winchester 231	<<locked>>	65%	38000	87%	**88	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	14359	33%	**2	86%
ADI AP 70N	<<locked>>	61%	31198	72%	**38	100%
ADI APS 350	<<locked>>	61%	27876	64%	**8	100%
ADI APS 450	<<locked>>	60%	25991	60%	**2	100%
ADI AS 30	<<locked>>	61%	25411	58%	**1	100%
ADI AS 50N	<<locked>>	62%	27644	64%	**40	100%
Accurate No. 2	<<locked>>	61%	24381	56%	**66	100%
[Accurate No. 7]*	<<locked>>	60%	20494	47%	**02	83%
[Accurate No. 9]*	<<locked>>	74%	25222	58%	**84	80%
Accurate Solo 1000	<<locked>>	61%	25512	59%	**01	100%
Accurate Solo 1250	<<locked>>	62%	22336	51%	**07	100%
[Accurate TCM]*	<<locked>>	72%	23888	55%	**58	81%
[Alliant 2400]*	<<locked>>	89%	30081	69%	**76	80%
Alliant BE-86	<<locked>>	61%	22684	52%	**10	100%
[Alliant BLUE DOT]*	<<locked>>	75%	19421	45%	**63	80%
Alliant BULLSEYE	<<locked>>	61%	27847	64%	**38	100%
Alliant Herco	<<locked>>	61%	15534	36%	**5	99%
Alliant POWER PISTOL	<<locked>>	62%	21364	49%	**02	92%
Alliant Sport Pistol	<<locked>>	60%	31241	72%	**84	100%
Alliant UNIQUE	<<locked>>	61%	21625	50%	**53	100%
Baschieri & Pellagri 100	<<locked>>	62%	24932	57%	**01	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	61%	15389	35%	**9	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	61%	26600	61%	**47	100%
Hodgdon Clays	<<locked>>	61%	28355	65%	**5	100%
Hodgdon HS-6	<<locked>>	60%	30603	70%	**17	100%
Hodgdon Longshot	<<locked>>	61%	34040	78%	**53	100%
Hodgdon Universal	<<locked>>	61%	25831	59%	**70	100%
Hodgdon CFE Pistol	<<locked>>	61%	24352	56%	**47	100%
[Lovex D037.1]*	<<locked>>	60%	20494	47%	**02	83%
[Lovex D037.2]*	<<locked>>	73%	25222	58%	**84	80%
Lovex S011	<<locked>>	61%	32155	74%	**12	100%
Lovex S020	<<locked>>	61%	25701	59%	**86	100%
Maxam CSB 1	<<locked>>	61%	20160	46%	**1	100%
Maxam CSB 2	<<locked>>	61%	21944	50%	**04	100%
Maxam CSB 3	<<locked>>	60%	23105	53%	**4	100%
Maxam CSB 4	<<locked>>	62%	25701	59%	**14	100%
Maxam CSB 5	<<locked>>	60%	27441	63%	**1	100%
[Ramshot Enforcer]*	<<locked>>	88%	27456	63%	**60	80%
Ramshot Silhouette	<<locked>>	61%	31430	72%	**98	100%
Ramshot True Blue	<<locked>>	61%	36056	83%	**70	100%
ReloadSwiss RS 12	<<locked>>	62%	29820	69%	**93	100%
ReloadSwiss RS 20	<<locked>>	62%	20610	47%	**40	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	18260	42%	**33	83%
Rottweil P 801	<<locked>>	60%	32445	75%	**96	100%
Rottweil P 806	<<locked>>	61%	14417	33%	**8	92%
SNPE Vectan A0	<<locked>>	61%	20552	47%	**7	100%
SNPE Vectan BA 9	<<locked>>	61%	24772	57%	**43	100%
SNPE Vectan BA10	<<locked>>	60%	28877	66%	**1	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	17158	39%	**8	95%
SNPE Vectan BA9 1/2	<<locked>>	61%	23844	55%	**33	100%
SNPE Vectan SP 2	<<locked>>	61%	22582	52%	**48	95%
[Shooters World Heavy Pistol]*	<<locked>>	73%	25222	58%	**84	80%
[Shooters World Major Pistol]*	<<locked>>	60%	20494	47%	**02	83%
Somchem MP200	<<locked>>	61%	24932	57%	**96	100%
Somchem MS200	<<locked>>	62%	23293	54%	**50	100%
Somchem S221	<<locked>>	61%	28210	65%	**04	94%
Vihtavuori 3N37	<<locked>>	61%	19638	45%	**37	98%
[Vihtavuori 3N38]*	<<locked>>	64%	14953	34%	**5	80%
[Vihtavuori N105]*	<<locked>>	67%	12502	29%	**5	80%
Vihtavuori N320	<<locked>>	61%	26411	61%	**30	100%
Vihtavuori N32C Tin Star	<<locked>>	63%	16143	37%	**3	100%
Vihtavuori N330	<<locked>>	62%	24801	57%	**60	100%
Vihtavuori N340	<<locked>>	61%	21669	50%	**33	100%
Vihtavuori N350	<<locked>>	61%	18333	42%	**10	97%
Winchester 231	<<locked>>	60%	33344	77%	**38	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