Load data for .357 Magnum + .355 | 124gr | LOS FMJ RN

Recommended Powder(s): Alliant UNIQUE, ReloadSwiss RS 20, SNPE Vectan A0, Somchem MS200, Vihtavuori N340

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.355 \| 124gr \| LOS FMJ RN
Manufacturer SKU:	3-355-FMJ-124RN
Bullet Weight:	124gr \| 8.0g
Bullet Diameter:	0.355" \| 9.02mm
Bullet Length:	0.611" \| 15.5mm
Caliber:	.357 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	1.358" \| 34.5mm
Seated Depth:	0.543" \| 13.8mm
Shank Seated Depth:	0.543" \| 13.8mm
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_B10816_C513
Last updated:	2025-02-02

Load data for 116 loads in caliber .357 Magnum with .355 | 124gr | LOS FMJ RN bullet and 58 powders such as Alliant UNIQUE, ReloadSwiss RS 20, SNPE Vectan A0, Somchem MS200, Vihtavuori N340. 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".

Go to the bottom of the "My Account " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.
Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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.

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>>	97%	26324	61%	**43	90%
ADI AP 70N	<<locked>>	76%	35984	83%	**12	100%
ADI APS 350	<<locked>>	79%	34737	80%	**02	100%
ADI APS 450	<<locked>>	83%	36376	84%	**58	100%
ADI AS 30	<<locked>>	89%	38377	88%	**34	100%
ADI AS 50N	<<locked>>	81%	35070	81%	**47	100%
Accurate No. 2	<<locked>>	82%	34853	80%	**02	100%
Accurate No. 5	<<locked>>	71%	38899	89%	**34	97%
[Accurate No. 7]*	<<locked>>	89%	37724	87%	**63	86%
Accurate Solo 1000	<<locked>>	85%	36564	84%	**40	100%
Accurate Solo 1250	<<locked>>	93%	37608	86%	**12	100%
Alliant BULLSEYE	<<locked>>	82%	37318	86%	**81	100%
Alliant POWER PISTOL	<<locked>>	93%	37086	85%	**63	94%
Alliant UNIQUE 👍	<<locked>>	95%	38319	88%	**01	100%
Baschieri & Pellagri 100	<<locked>>	88%	38058	87%	**60	100%
Hodgdon Clays	<<locked>>	79%	35114	81%	**22	100%
Hodgdon HP38	<<locked>>	65%	36985	85%	**86	100%
Hodgdon HS-6	<<locked>>	77%	38885	89%	**21	98%
Hodgdon Longshot	<<locked>>	72%	35940	83%	**88	99%
Hodgdon Universal	<<locked>>	87%	37942	87%	**32	100%
Hodgdon TrailBoss	<<locked>>	95%	11516	26%	**0	100%
Lovex D036	<<locked>>	71%	38841	89%	**34	97%
[Lovex D037.1]*	<<locked>>	89%	37724	87%	**63	86%
Lovex S011	<<locked>>	74%	36405	84%	**63	100%
Lovex S020	<<locked>>	86%	39073	90%	**58	100%
Maxam CSB 1	<<locked>>	94%	35012	80%	**83	100%
Maxam CSB 2	<<locked>>	94%	36999	85%	**19	100%
Maxam CSB 3	<<locked>>	89%	36361	84%	**73	100%
Maxam CSB 4	<<locked>>	86%	36521	84%	**50	100%
Maxam CSB 5	<<locked>>	82%	37333	86%	**11	100%
Ramshot Silhouette	<<locked>>	77%	36956	85%	**75	100%
Ramshot True Blue	<<locked>>	73%	38580	89%	**07	99%
Ramshot Zip	<<locked>>	64%	35433	81%	**76	100%
ReloadSwiss RS 12	<<locked>>	81%	36999	85%	**02	100%
ReloadSwiss RS 14	<<locked>>	93%	10153	23%	**0	99%
ReloadSwiss RS 20 👍	<<locked>>	93%	34940	80%	**58	100%
[ReloadSwiss RS 24]*	<<locked>>	95%	36013	83%	**30	88%
Rottweil P 801	<<locked>>	77%	39015	90%	**83	100%
Rottweil P 806	<<locked>>	95%	27514	63%	**75	96%
SNPE Vectan A0 👍	<<locked>>	95%	36666	84%	**29	100%
SNPE Vectan BA 9	<<locked>>	88%	38870	89%	**22	100%
SNPE Vectan BA10	<<locked>>	77%	36361	84%	**58	100%
SNPE Vectan BA7 1/2	<<locked>>	95%	31444	72%	**06	97%
SNPE Vectan BA9 1/2	<<locked>>	90%	39015	90%	**35	100%
Shooters World Auto Pistol	<<locked>>	71%	38841	89%	**34	97%
[Shooters World Major Pistol]*	<<locked>>	89%	37724	87%	**63	86%
Somchem MP200	<<locked>>	87%	38203	88%	**85	100%
Somchem MS200 👍	<<locked>>	92%	38000	87%	**62	100%
Somchem S221	<<locked>>	80%	36767	85%	**17	91%
Vihtavuori 3N37	<<locked>>	94%	36376	84%	**98	99%
[Vihtavuori 3N38]*	<<locked>>	96%	25889	60%	**63	83%
Vihtavuori N310	<<locked>>	69%	36782	85%	**71	100%
Vihtavuori N320	<<locked>>	85%	37869	87%	**76	100%
Vihtavuori N32C Tin Star	<<locked>>	95%	25208	58%	**63	100%
Vihtavuori N330	<<locked>>	87%	37014	85%	**29	100%
Vihtavuori N340 👍	<<locked>>	90%	36434	84%	**42	100%
Vihtavuori N350	<<locked>>	96%	34635	80%	**68	99%
Winchester 231	<<locked>>	72%	35433	81%	**76	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	77%	15867	36%	**24	80%
ADI AP 70N	<<locked>>	61%	22931	53%	**32	100%
ADI APS 350	<<locked>>	61%	23206	53%	**5	100%
ADI APS 450	<<locked>>	61%	21886	50%	**8	100%
ADI AS 30	<<locked>>	62%	20740	48%	**01	100%
ADI AS 50N	<<locked>>	62%	21741	50%	**56	100%
Accurate No. 2	<<locked>>	61%	18217	42%	**33	95%
Accurate No. 5	<<locked>>	61%	26687	61%	**53	92%
[Accurate No. 7]*	<<locked>>	81%	28732	66%	**29	81%
Accurate Solo 1000	<<locked>>	60%	19682	45%	**10	100%
Accurate Solo 1250	<<locked>>	61%	15824	36%	**1	99%
Alliant BULLSEYE	<<locked>>	61%	20987	48%	**25	99%
[Alliant POWER PISTOL]*	<<locked>>	65%	16708	38%	**73	80%
Alliant UNIQUE	<<locked>>	60%	15693	36%	**14	95%
Baschieri & Pellagri 100	<<locked>>	61%	18144	42%	**4	100%
Hodgdon Clays	<<locked>>	61%	23496	54%	**8	100%
Hodgdon HP38	<<locked>>	62%	33040	76%	**47	100%
Hodgdon HS-6	<<locked>>	60%	22089	51%	**61	92%
Hodgdon Longshot	<<locked>>	61%	24526	56%	**11	95%
Hodgdon Universal	<<locked>>	61%	19145	44%	**63	100%
Hodgdon TrailBoss	<<locked>>	70%	7295	17%	**9	99%
Lovex D036	<<locked>>	61%	26629	61%	**60	92%
[Lovex D037.1]*	<<locked>>	81%	28732	66%	**29	81%
Lovex S011	<<locked>>	62%	25440	58%	**25	100%
Lovex S020	<<locked>>	62%	19000	44%	**73	99%
Maxam CSB 1	<<locked>>	61%	15273	35%	**1	99%
Maxam CSB 2	<<locked>>	62%	15896	37%	**10	100%
Maxam CSB 3	<<locked>>	60%	17434	40%	**7	100%
Maxam CSB 4	<<locked>>	62%	19595	45%	**24	100%
Maxam CSB 5	<<locked>>	61%	22437	52%	**27	100%
Ramshot Silhouette	<<locked>>	61%	22408	52%	**58	98%
Ramshot True Blue	<<locked>>	62%	26310	60%	**30	96%
Ramshot Zip	<<locked>>	61%	32053	74%	**40	100%
ReloadSwiss RS 12	<<locked>>	60%	20436	47%	**83	100%
ReloadSwiss RS 14	<<locked>>	69%	6599	15%	**9	95%
ReloadSwiss RS 20	<<locked>>	60%	13822	32%	**1	96%
[ReloadSwiss RS 24]*	<<locked>>	82%	25019	57%	**53	81%
Rottweil P 801	<<locked>>	62%	24889	57%	**15	100%
[Rottweil P 806]*	<<locked>>	70%	11806	27%	**10	81%
SNPE Vectan A0	<<locked>>	61%	15331	35%	**5	95%
SNPE Vectan BA 9	<<locked>>	60%	18304	42%	**20	99%
SNPE Vectan BA10	<<locked>>	62%	25237	58%	**27	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	12691	29%	**2	83%
SNPE Vectan BA9 1/2	<<locked>>	60%	17796	41%	**27	100%
Shooters World Auto Pistol	<<locked>>	61%	26629	61%	**60	92%
[Shooters World Major Pistol]*	<<locked>>	81%	28732	66%	**29	81%
Somchem MP200	<<locked>>	61%	18391	42%	**66	96%
Somchem MS200	<<locked>>	62%	17564	40%	**33	98%
[Somchem S221]*	<<locked>>	61%	19609	45%	**22	80%
[Vihtavuori 3N37]*	<<locked>>	61%	14054	32%	**8	86%
[Vihtavuori 3N38]*	<<locked>>	92%	23540	54%	**20	81%
Vihtavuori N310	<<locked>>	60%	28108	65%	**76	100%
Vihtavuori N320	<<locked>>	62%	19783	45%	**40	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	11371	26%	**0	100%
Vihtavuori N330	<<locked>>	62%	17506	40%	**53	100%
Vihtavuori N340	<<locked>>	61%	15809	36%	**04	96%
[Vihtavuori N350]*	<<locked>>	61%	12836	30%	**5	85%
Winchester 231	<<locked>>	61%	25570	59%	**48	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.