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

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 \| 158gr \| Speer SP MAG GD
Manufacturer SKU:	4215
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.680" \| 17.3mm
Caliber:	.357 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	1.566" \| 39.8mm
Seated Depth:	0.404" \| 10.3mm
Shank Seated Depth:	0.404" \| 10.3mm
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:	2025-01-01

Load data for 114 loads in caliber .357 Magnum with .357 | 158gr | Speer SP MAG GD bullet and 57 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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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>>	67%	37333	86%	**04	100%
ADI AS 30	<<locked>>	78%	37927	87%	**19	100%
ADI AS 50N	<<locked>>	73%	36796	85%	**45	100%
Accurate No. 2	<<locked>>	74%	36970	85%	**27	100%
Accurate No. 7	<<locked>>	77%	37797	87%	**85	94%
[Accurate No. 9]*	<<locked>>	84%	36376	84%	**55	87%
Accurate Solo 1000	<<locked>>	76%	37695	87%	**42	100%
Accurate Solo 1250	<<locked>>	80%	36738	84%	**88	100%
[Accurate TCM]*	<<locked>>	84%	36927	85%	**52	89%
[Alliant 2400]*	<<locked>>	95%	36027	83%	**65	84%
Alliant BULLSEYE	<<locked>>	71%	36883	85%	**53	100%
Alliant POWER PISTOL	<<locked>>	81%	38116	88%	**75	99%
Alliant UNIQUE	<<locked>>	81%	37565	86%	**70	100%
Baschieri & Pellagri 100	<<locked>>	76%	37043	85%	**35	100%
Hodgdon Clays	<<locked>>	75%	38667	89%	**66	100%
Hodgdon HS-6	<<locked>>	67%	38653	89%	**19	100%
Hodgdon Longshot	<<locked>>	63%	36927	85%	**86	100%
Hodgdon Universal	<<locked>>	74%	37333	86%	**04	100%
Hodgdon TrailBoss	<<locked>>	94%	15026	35%	**0	100%
Lovex D037.1	<<locked>>	77%	37797	87%	**85	94%
[Lovex D037.2]*	<<locked>>	83%	36376	84%	**55	87%
Lovex S011	<<locked>>	67%	38986	90%	**81	100%
Lovex S020	<<locked>>	73%	37913	87%	**27	100%
Maxam CSB 1	<<locked>>	83%	36056	83%	**78	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>>	72%	37405	86%	**99	100%
[Ramshot Enforcer]*	<<locked>>	97%	36970	85%	**98	86%
Ramshot Silhouette	<<locked>>	66%	37014	85%	**57	100%
Ramshot True Blue	<<locked>>	63%	38682	89%	**99	100%
ReloadSwiss RS 12	<<locked>>	68%	35911	83%	**61	100%
ReloadSwiss RS 14	<<locked>>	92%	13213	30%	**4	100%
ReloadSwiss RS 20	<<locked>>	81%	36506	84%	**47	100%
ReloadSwiss RS 24	<<locked>>	82%	37028	85%	**55	95%
Rottweil P 801	<<locked>>	67%	38725	89%	**55	100%
Rottweil P 806	<<locked>>	87%	36622	84%	**68	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%
[Shooters World Heavy Pistol]*	<<locked>>	83%	36376	84%	**55	87%
Shooters World Major Pistol	<<locked>>	77%	37797	87%	**85	94%
Somchem MP200	<<locked>>	75%	38261	88%	**66	100%
Somchem MS200	<<locked>>	78%	36651	84%	**27	100%
Somchem S221	<<locked>>	70%	37608	86%	**42	98%
Vihtavuori 3N37 👍	<<locked>>	83%	39030	90%	**22	100%
Vihtavuori 3N38	<<locked>>	93%	36970	85%	**48	96%
Vihtavuori N105	<<locked>>	94%	30226	69%	**06	97%
Vihtavuori N320	<<locked>>	72%	35984	83%	**35	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	33997	78%	**53	100%
Vihtavuori N330	<<locked>>	75%	37014	85%	**98	100%
Vihtavuori N340	<<locked>>	80%	38435	88%	**47	100%
Vihtavuori N350 👍	<<locked>>	85%	37826	87%	**99	100%
Winchester 231	<<locked>>	63%	36390	84%	**75	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 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>>	91%	31169	72%	**99	81%
Alliant BULLSEYE	<<locked>>	61%	27847	64%	**38	100%
Alliant POWER PISTOL	<<locked>>	62%	21364	49%	**02	92%
Alliant UNIQUE	<<locked>>	61%	21625	50%	**53	100%
Baschieri & Pellagri 100	<<locked>>	62%	24932	57%	**01	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 TrailBoss	<<locked>>	68%	8876	20%	**6	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 14	<<locked>>	66%	8021	18%	**6	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%
[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>>	61%	15229	35%	**7	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