Load data for .357 Maximum + .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:	0.680" \| 17.3mm
Caliber:	.357 Maximum load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	1.960" \| 49.8mm
Seated Depth:	0.320" \| 8.1mm
Shank Seated Depth:	0.320" \| 8.1mm
Case Capacity:	33.6 Grains of Water \| 2.18 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B6225_C515
Last updated:	2025-01-01

Load data for 110 loads in caliber .357 Maximum with .357 | 158gr | Speer SP MAG GD bullet and 55 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>>	86%	40118	89%	**57	100%
ADI APS 350	<<locked>>	71%	40234	89%	**84	100%
ADI APS 450	<<locked>>	72%	39755	88%	**04	100%
ADI AS 30	<<locked>>	71%	39668	88%	**37	100%
ADI AS 50N	<<locked>>	65%	38508	86%	**57	100%
[Accurate 4100]*	<<locked>>	85%	39044	87%	**16	87%
Accurate No. 2	<<locked>>	65%	38305	85%	**39	100%
Accurate No. 7	<<locked>>	66%	40045	89%	**22	98%
Accurate No. 9	<<locked>>	74%	40263	90%	**26	94%
Accurate Solo 1000	<<locked>>	69%	38812	86%	**57	100%
Accurate Solo 1250	<<locked>>	72%	39914	89%	**19	100%
Accurate TCM	<<locked>>	74%	40408	90%	**16	95%
Alliant 2400	<<locked>>	83%	40190	89%	**42	91%
Alliant BLUE DOT	<<locked>>	85%	39842	89%	**09	97%
Alliant BULLSEYE	<<locked>>	63%	39871	89%	**78	100%
Alliant POWER PISTOL	<<locked>>	69%	39407	88%	**93	100%
Alliant UNIQUE	<<locked>>	71%	39798	89%	**81	100%
Baschieri & Pellagri 100	<<locked>>	68%	38290	85%	**47	100%
Hodgdon Clays	<<locked>>	69%	39001	87%	**81	100%
[Hodgdon H110]*	<<locked>>	92%	40248	90%	**52	84%
Hodgdon LilGun	<<locked>>	93%	39697	88%	**88	91%
Hodgdon Universal	<<locked>>	65%	38696	86%	**09	100%
Hodgdon TrailBoss	<<locked>>	95%	20639	46%	**4	100%
Lovex D037.1	<<locked>>	66%	40045	89%	**22	98%
Lovex D037.2	<<locked>>	72%	39334	87%	**12	93%
Lovex S020	<<locked>>	65%	40263	90%	**52	100%
Maxam CSB 1	<<locked>>	74%	38754	86%	**96	100%
Maxam CSB 2	<<locked>>	70%	39001	87%	**93	100%
Maxam CSB 3	<<locked>>	71%	39088	87%	**83	100%
Maxam CSB 4	<<locked>>	68%	38943	87%	**63	100%
Maxam CSB 5	<<locked>>	66%	39682	88%	**24	100%
Ramshot Enforcer	<<locked>>	83%	39885	89%	**45	92%
ReloadSwiss RS 14	<<locked>>	95%	19363	43%	**4	100%
ReloadSwiss RS 20	<<locked>>	70%	38464	86%	**55	100%
ReloadSwiss RS 24	<<locked>>	71%	38856	86%	**96	99%
Rottweil P 806	<<locked>>	74%	39813	89%	**76	100%
SNPE Vectan A0	<<locked>>	74%	38943	87%	**39	100%
SNPE Vectan BA 9	<<locked>>	68%	39653	88%	**19	100%
SNPE Vectan BA10	<<locked>>	66%	38667	86%	**91	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	96%	25788	57%	**93	86%
SNPE Vectan BA7 1/2	<<locked>>	79%	40248	90%	**24	100%
SNPE Vectan BA9 1/2	<<locked>>	69%	39914	89%	**19	100%
Shooters World Heavy Pistol	<<locked>>	72%	39334	87%	**12	93%
Shooters World Major Pistol	<<locked>>	66%	40045	89%	**22	98%
Somchem MP200	<<locked>>	66%	39856	89%	**88	100%
Somchem MS200	<<locked>>	69%	38740	86%	**45	100%
Vihtavuori 3N37	<<locked>>	71%	39842	89%	**27	100%
Vihtavuori 3N38	<<locked>>	80%	39088	87%	**86	99%
Vihtavuori N105	<<locked>>	85%	38595	86%	**03	100%
[Vihtavuori N110]*	<<locked>>	97%	33460	74%	**53	88%
Vihtavuori N320	<<locked>>	66%	39334	87%	**70	100%
Vihtavuori N32C Tin Star	<<locked>>	92%	40205	89%	**04	100%
Vihtavuori N330	<<locked>>	65%	38348	85%	**06	100%
Vihtavuori N340	<<locked>>	69%	38609	86%	**42	100%
Vihtavuori N350	<<locked>>	74%	39421	88%	**07	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	20189	45%	**32	96%
ADI APS 350	<<locked>>	60%	31691	70%	**86	100%
ADI APS 450	<<locked>>	62%	31720	71%	**06	100%
ADI AS 30	<<locked>>	61%	31357	70%	**35	100%
ADI AS 50N	<<locked>>	61%	34258	76%	**11	100%
[Accurate 4100]*	<<locked>>	76%	28660	64%	**45	81%
Accurate No. 2	<<locked>>	61%	33736	75%	**93	100%
Accurate No. 7	<<locked>>	61%	33272	74%	**14	95%
[Accurate No. 9]*	<<locked>>	61%	25454	57%	**73	85%
Accurate Solo 1000	<<locked>>	62%	32489	72%	**78	100%
Accurate Solo 1250	<<locked>>	61%	29704	66%	**94	100%
[Accurate TCM]*	<<locked>>	61%	25498	57%	**66	86%
[Alliant 2400]*	<<locked>>	68%	24453	54%	**63	81%
[Alliant BLUE DOT]*	<<locked>>	61%	19276	43%	**29	84%
Alliant BULLSEYE	<<locked>>	61%	37811	84%	**62	100%
Alliant POWER PISTOL	<<locked>>	61%	30487	68%	**55	99%
Alliant UNIQUE	<<locked>>	61%	30110	67%	**60	100%
Baschieri & Pellagri 100	<<locked>>	61%	32068	71%	**75	100%
Hodgdon Clays	<<locked>>	60%	32271	72%	**99	100%
[Hodgdon H110]*	<<locked>>	87%	33779	75%	**53	80%
[Hodgdon LilGun]*	<<locked>>	80%	24685	55%	**35	81%
Hodgdon Universal	<<locked>>	61%	34548	77%	**63	100%
Hodgdon TrailBoss	<<locked>>	60%	10167	23%	**8	100%
Lovex D037.1	<<locked>>	61%	33272	74%	**14	95%
[Lovex D037.2]*	<<locked>>	61%	26165	58%	**89	86%
Lovex S020	<<locked>>	61%	35694	79%	**99	100%
Maxam CSB 1	<<locked>>	61%	27354	61%	**55	100%
Maxam CSB 2	<<locked>>	61%	30922	69%	**98	100%
Maxam CSB 3	<<locked>>	61%	30966	69%	**81	100%
Maxam CSB 4	<<locked>>	62%	32779	73%	**91	100%
Maxam CSB 5	<<locked>>	62%	35346	79%	**75	100%
[Ramshot Enforcer]*	<<locked>>	67%	22887	51%	**40	80%
ReloadSwiss RS 14	<<locked>>	61%	9689	22%	**8	100%
ReloadSwiss RS 20	<<locked>>	61%	28906	64%	**37	100%
ReloadSwiss RS 24	<<locked>>	61%	27630	61%	**09	94%
Rottweil P 806	<<locked>>	61%	25164	56%	**60	100%
SNPE Vectan A0	<<locked>>	61%	27963	62%	**98	100%
SNPE Vectan BA 9	<<locked>>	61%	32140	71%	**30	100%
SNPE Vectan BA10	<<locked>>	61%	34621	77%	**48	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	88%	20624	46%	**84	81%
SNPE Vectan BA7 1/2	<<locked>>	61%	24178	54%	**84	100%
SNPE Vectan BA9 1/2	<<locked>>	61%	32068	71%	**24	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	26165	58%	**89	86%
Shooters World Major Pistol	<<locked>>	61%	33272	74%	**14	95%
Somchem MP200	<<locked>>	61%	33997	76%	**12	100%
Somchem MS200	<<locked>>	61%	30937	69%	**43	100%
Vihtavuori 3N37	<<locked>>	61%	29211	65%	**80	100%
Vihtavuori 3N38	<<locked>>	61%	21060	47%	**68	91%
Vihtavuori N105	<<locked>>	61%	17231	38%	**15	91%
[Vihtavuori N110]*	<<locked>>	86%	23612	53%	**80	81%
Vihtavuori N320	<<locked>>	61%	34838	77%	**14	100%
Vihtavuori N32C Tin Star	<<locked>>	60%	20044	45%	**5	100%
Vihtavuori N330	<<locked>>	61%	34055	76%	**50	100%
Vihtavuori N340	<<locked>>	61%	30647	68%	**50	100%
Vihtavuori N350	<<locked>>	61%	26832	60%	**40	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