Load data for .357 Magnum + .357 | 158gr | LOS FP

Recommended Powder(s): ADI AP 100, Rottweil P 806, SNPE Vectan BA7 1/2, Vihtavuori N350

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| LOS FP
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.657" \| 16.7mm
Caliber:	.357 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	1.566" \| 39.8mm
Seated Depth:	0.381" \| 9.7mm
Shank Seated Depth:	0.381" \| 9.7mm
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_B3515_C513
Last updated:	2025-02-02

Load data for 110 loads in caliber .357 Magnum with .357 | 158gr | LOS FP bullet and 55 powders such as ADI AP 100, Rottweil P 806, SNPE Vectan BA7 1/2, 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>>	94%	36999	85%	**16	99%
ADI AP 70N	<<locked>>	66%	38609	89%	**20	100%
ADI AS 30	<<locked>>	77%	38856	89%	**25	100%
ADI AS 50N	<<locked>>	72%	37855	87%	**58	100%
Accurate No. 2	<<locked>>	71%	35810	82%	**17	100%
Accurate No. 7	<<locked>>	75%	38232	88%	**91	94%
[Accurate No. 9]*	<<locked>>	83%	37811	87%	**78	88%
Accurate Solo 1000	<<locked>>	76%	38392	88%	**52	100%
Accurate Solo 1250	<<locked>>	79%	37376	86%	**94	100%
Accurate TCM	<<locked>>	83%	38232	88%	**75	90%
[Alliant 2400]*	<<locked>>	94%	37492	86%	**91	85%
Alliant BULLSEYE	<<locked>>	68%	36042	83%	**47	100%
Alliant POWER PISTOL	<<locked>>	79%	38624	89%	**88	99%
Alliant UNIQUE	<<locked>>	78%	37130	85%	**63	100%
Baschieri & Pellagri 100	<<locked>>	75%	37724	87%	**45	100%
Hodgdon Clays	<<locked>>	70%	35897	83%	**40	100%
Hodgdon HS-6	<<locked>>	66%	39001	90%	**19	100%
Hodgdon Universal	<<locked>>	73%	38609	89%	**20	100%
Hodgdon TrailBoss	<<locked>>	93%	16447	38%	**0	100%
Lovex D037.1	<<locked>>	75%	38232	88%	**91	94%
[Lovex D037.2]*	<<locked>>	82%	37811	87%	**78	88%
Lovex S011	<<locked>>	63%	36260	83%	**55	100%
Lovex S020	<<locked>>	71%	36985	85%	**20	100%
Maxam CSB 1	<<locked>>	81%	36898	85%	**84	100%
Maxam CSB 2	<<locked>>	77%	37246	86%	**88	100%
Maxam CSB 3	<<locked>>	76%	36622	84%	**61	100%
Maxam CSB 4	<<locked>>	76%	38885	89%	**61	100%
Maxam CSB 5	<<locked>>	69%	36521	84%	**96	100%
[Ramshot Enforcer]*	<<locked>>	95%	38566	89%	**17	87%
Ramshot Silhouette	<<locked>>	66%	38841	89%	**86	100%
ReloadSwiss RS 12	<<locked>>	67%	37536	86%	**75	100%
ReloadSwiss RS 14	<<locked>>	92%	14939	34%	**7	100%
ReloadSwiss RS 20	<<locked>>	80%	37536	86%	**53	100%
ReloadSwiss RS 24	<<locked>>	82%	38740	89%	**85	96%
Rottweil P 801	<<locked>>	64%	38609	89%	**52	100%
Rottweil P 806 👍	<<locked>>	86%	38899	89%	**94	100%
SNPE Vectan A0	<<locked>>	83%	38928	89%	**43	100%
SNPE Vectan BA 9	<<locked>>	76%	38638	89%	**11	100%
SNPE Vectan BA10	<<locked>>	69%	37289	86%	**73	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	87%	38014	87%	**93	100%
SNPE Vectan BA9 1/2	<<locked>>	75%	36985	85%	**98	100%
[Shooters World Heavy Pistol]*	<<locked>>	82%	37811	87%	**78	88%
Shooters World Major Pistol	<<locked>>	75%	38232	88%	**91	94%
Somchem MP200	<<locked>>	73%	37724	87%	**60	100%
Somchem MS200	<<locked>>	77%	37594	86%	**37	100%
Somchem S221	<<locked>>	67%	36970	85%	**42	98%
Vihtavuori 3N37	<<locked>>	80%	38247	88%	**16	100%
Vihtavuori 3N38	<<locked>>	91%	37333	86%	**58	96%
Vihtavuori N105	<<locked>>	96%	34954	80%	**68	98%
Vihtavuori N320	<<locked>>	71%	37028	85%	**48	100%
Vihtavuori N32C Tin Star	<<locked>>	94%	35172	81%	**63	100%
Vihtavuori N330	<<locked>>	74%	37913	87%	**14	100%
Vihtavuori N340	<<locked>>	77%	37507	86%	**40	100%
Vihtavuori N350 👍	<<locked>>	83%	38334	88%	**09	100%
Winchester 231	<<locked>>	64%	38754	89%	**01	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	15389	35%	**8	88%
ADI AP 70N	<<locked>>	60%	32634	75%	**55	100%
ADI AS 30	<<locked>>	61%	26731	61%	**8	100%
ADI AS 50N	<<locked>>	61%	28848	66%	**56	100%
Accurate No. 2	<<locked>>	62%	26571	61%	**02	100%
[Accurate No. 7]*	<<locked>>	61%	23424	54%	**55	86%
[Accurate No. 9]*	<<locked>>	71%	25106	58%	**78	80%
Accurate Solo 1000	<<locked>>	60%	26469	61%	**10	100%
Accurate Solo 1250	<<locked>>	61%	23641	54%	**24	100%
[Accurate TCM]*	<<locked>>	69%	23656	54%	**48	81%
[Alliant 2400]*	<<locked>>	85%	28819	66%	**66	80%
Alliant BULLSEYE	<<locked>>	62%	30356	70%	**75	100%
Alliant POWER PISTOL	<<locked>>	61%	22466	52%	**25	94%
Alliant UNIQUE	<<locked>>	62%	24149	55%	**86	100%
Baschieri & Pellagri 100	<<locked>>	61%	26092	60%	**17	100%
Hodgdon Clays	<<locked>>	61%	29327	67%	**8	100%
Hodgdon HS-6	<<locked>>	61%	33779	78%	**60	100%
Hodgdon Universal	<<locked>>	60%	27253	63%	**83	100%
Hodgdon TrailBoss	<<locked>>	62%	9152	21%	**6	100%
[Lovex D037.1]*	<<locked>>	61%	23424	54%	**55	86%
[Lovex D037.2]*	<<locked>>	70%	25106	58%	**78	80%
Lovex S011	<<locked>>	60%	33025	76%	**22	100%
Lovex S020	<<locked>>	62%	28268	65%	**15	100%
Maxam CSB 1	<<locked>>	60%	21524	49%	**8	100%
Maxam CSB 2	<<locked>>	60%	23670	54%	**20	100%
Maxam CSB 3	<<locked>>	62%	25382	58%	**27	100%
Maxam CSB 4	<<locked>>	61%	26716	61%	**27	100%
Maxam CSB 5	<<locked>>	62%	30211	69%	**24	100%
[Ramshot Enforcer]*	<<locked>>	85%	27383	63%	**50	80%
Ramshot Silhouette	<<locked>>	61%	33460	77%	**27	100%
ReloadSwiss RS 12	<<locked>>	61%	31415	72%	**09	100%
ReloadSwiss RS 14	<<locked>>	61%	8441	19%	**3	100%
ReloadSwiss RS 20	<<locked>>	61%	21814	50%	**53	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	20073	46%	**76	85%
Rottweil P 801	<<locked>>	61%	35302	81%	**19	100%
Rottweil P 806	<<locked>>	61%	16911	39%	**43	95%
SNPE Vectan A0	<<locked>>	60%	21524	49%	**10	100%
SNPE Vectan BA 9	<<locked>>	60%	25701	59%	**56	100%
SNPE Vectan BA10	<<locked>>	62%	31169	72%	**10	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	19131	44%	**07	97%
SNPE Vectan BA9 1/2	<<locked>>	62%	26194	60%	**70	100%
[Shooters World Heavy Pistol]*	<<locked>>	70%	25106	58%	**78	80%
[Shooters World Major Pistol]*	<<locked>>	61%	23424	54%	**55	86%
Somchem MP200	<<locked>>	61%	27093	62%	**29	100%
Somchem MS200	<<locked>>	61%	24453	56%	**66	100%
Somchem S221	<<locked>>	61%	30298	70%	**40	95%
Vihtavuori 3N37	<<locked>>	61%	21770	50%	**79	99%
[Vihtavuori 3N38]*	<<locked>>	60%	14982	34%	**8	81%
[Vihtavuori N105]*	<<locked>>	64%	13213	30%	**8	82%
Vihtavuori N320	<<locked>>	61%	27804	64%	**43	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	16839	39%	**0	100%
Vihtavuori N330	<<locked>>	61%	26136	60%	**76	100%
Vihtavuori N340	<<locked>>	62%	24105	55%	**70	100%
Vihtavuori N350	<<locked>>	60%	19609	45%	**33	98%
Winchester 231	<<locked>>	61%	35578	82%	**68	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