Load data for .357 Auto Magnum + .356 | 123gr | LOS RN

Recommended Powder(s): Rottweil P 806, SNPE Vectan BA7 1/2

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.356 \| 123gr \| LOS RN
Bullet Weight:	123gr \| 8.0g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.580" \| 14.7mm
Caliber:	.357 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.303" \| 7.7mm
Shank Seated Depth:	0.303" \| 7.7mm
Case Capacity:	35.0 Grains of Water \| 2.27 cm³
Primer Size:	Small Pistol Magnum (SPM)
Max. allowed Pressure:	36985 psi \| 2550 bar
LID:	LID_B3508_C511
Last updated:	2025-08-05

Load data for 88 loads in caliber .357 Auto Magnum with .356 | 123gr | LOS RN bullet and 44 powders such as Rottweil P 806, SNPE Vectan BA7 1/2. 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>>	81%	32024	87%	**85	98%
ADI APS 350	<<locked>>	64%	33025	89%	**02	100%
ADI APS 450	<<locked>>	63%	31502	85%	**16	100%
ADI AS 30	<<locked>>	64%	31981	86%	**65	100%
Accurate No. 2	<<locked>>	63%	32430	88%	**12	100%
Accurate No. 7	<<locked>>	63%	32576	88%	**34	91%
[Accurate No. 9]*	<<locked>>	71%	32953	89%	**40	86%
Accurate Solo 1000	<<locked>>	63%	31676	86%	**88	100%
Accurate Solo 1250	<<locked>>	67%	32547	88%	**63	100%
[Accurate TCM]*	<<locked>>	72%	33228	90%	**40	88%
[Alliant 2400]*	<<locked>>	81%	32532	88%	**40	82%
Alliant BLUE DOT	<<locked>>	82%	32329	87%	**24	90%
Alliant POWER PISTOL	<<locked>>	67%	33011	89%	**54	98%
Alliant UNIQUE	<<locked>>	66%	32445	88%	**29	100%
Baschieri & Pellagri 100	<<locked>>	63%	31633	86%	**91	100%
[Hodgdon LilGun]*	<<locked>>	93%	33199	90%	**36	83%
Hodgdon CFE Pistol	<<locked>>	64%	33243	90%	**83	100%
Hodgdon TrailBoss	<<locked>>	94%	19319	52%	**32	100%
Lovex D037.1	<<locked>>	63%	32576	88%	**34	91%
[Lovex D037.2]*	<<locked>>	70%	32184	87%	**27	86%
Maxam CSB 1	<<locked>>	69%	31720	86%	**40	100%
Maxam CSB 2	<<locked>>	65%	31981	86%	**40	100%
Maxam CSB 3	<<locked>>	67%	33272	90%	**37	100%
Maxam CSB 4	<<locked>>	63%	31618	86%	**01	100%
[Ramshot Enforcer]*	<<locked>>	81%	32837	89%	**60	84%
ReloadSwiss RS 14	<<locked>>	96%	18637	50%	**52	100%
ReloadSwiss RS 20	<<locked>>	68%	32938	89%	**29	100%
ReloadSwiss RS 24	<<locked>>	69%	32445	88%	**24	94%
Rottweil P 806 👍	<<locked>>	72%	33040	89%	**37	100%
SNPE Vectan A0	<<locked>>	71%	33069	89%	**06	100%
SNPE Vectan BA 9	<<locked>>	64%	33199	90%	**76	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	74%	32561	88%	**58	100%
SNPE Vectan BA9 1/2	<<locked>>	63%	31966	86%	**60	100%
[Shooters World Heavy Pistol]*	<<locked>>	70%	32184	87%	**27	86%
Shooters World Major Pistol	<<locked>>	63%	32576	88%	**34	91%
Somchem MP200	<<locked>>	62%	33011	89%	**32	100%
Somchem MS200	<<locked>>	66%	33083	89%	**09	100%
Vihtavuori 3N37	<<locked>>	67%	32111	87%	**58	100%
Vihtavuori 3N38	<<locked>>	79%	32837	89%	**31	95%
Vihtavuori N105	<<locked>>	84%	32996	89%	**70	98%
Vihtavuori N32C Tin Star	<<locked>>	83%	31923	86%	**25	100%
Vihtavuori N330	<<locked>>	63%	32706	88%	**73	100%
Vihtavuori N340	<<locked>>	66%	32837	89%	**16	100%
Vihtavuori N350	<<locked>>	71%	33025	89%	**81	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	18681	51%	**80	91%
ADI APS 350	<<locked>>	61%	31154	84%	**80	100%
ADI APS 450	<<locked>>	61%	29863	81%	**89	100%
ADI AS 30	<<locked>>	62%	30255	82%	**29	100%
Accurate No. 2	<<locked>>	61%	30458	82%	**76	100%
Accurate No. 7	<<locked>>	61%	29979	81%	**85	90%
[Accurate No. 9]*	<<locked>>	63%	24555	66%	**70	80%
Accurate Solo 1000	<<locked>>	61%	29878	81%	**58	100%
Accurate Solo 1250	<<locked>>	61%	27499	74%	**75	100%
[Accurate TCM]*	<<locked>>	62%	23772	64%	**44	81%
[Alliant 2400]*	<<locked>>	77%	29124	79%	**81	80%
[Alliant BLUE DOT]*	<<locked>>	65%	20073	54%	**35	81%
Alliant POWER PISTOL	<<locked>>	61%	27369	74%	**29	96%
Alliant UNIQUE	<<locked>>	61%	27572	75%	**44	100%
Baschieri & Pellagri 100	<<locked>>	61%	29863	81%	**68	100%
[Hodgdon LilGun]*	<<locked>>	91%	30632	83%	**70	80%
Hodgdon CFE Pistol	<<locked>>	61%	30095	81%	**27	100%
Hodgdon TrailBoss	<<locked>>	62%	10399	28%	**2	100%
Lovex D037.1	<<locked>>	61%	29979	81%	**85	90%
[Lovex D037.2]*	<<locked>>	63%	25222	68%	**70	80%
Maxam CSB 1	<<locked>>	61%	25396	69%	**32	100%
Maxam CSB 2	<<locked>>	61%	28790	78%	**91	100%
Maxam CSB 3	<<locked>>	60%	28094	76%	**62	100%
Maxam CSB 4	<<locked>>	61%	29965	81%	**68	100%
[Ramshot Enforcer]*	<<locked>>	77%	27688	75%	**62	80%
ReloadSwiss RS 14	<<locked>>	61%	9587	26%	**6	100%
ReloadSwiss RS 20	<<locked>>	61%	26571	72%	**27	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	24743	67%	**73	89%
Rottweil P 806	<<locked>>	61%	22684	61%	**30	98%
SNPE Vectan A0	<<locked>>	61%	25556	69%	**75	100%
SNPE Vectan BA 9	<<locked>>	61%	29994	81%	**24	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	22278	60%	**55	98%
SNPE Vectan BA9 1/2	<<locked>>	61%	30298	82%	**30	100%
[Shooters World Heavy Pistol]*	<<locked>>	63%	25222	68%	**70	80%
Shooters World Major Pistol	<<locked>>	61%	29979	81%	**85	90%
Somchem MP200	<<locked>>	61%	31386	85%	**16	100%
Somchem MS200	<<locked>>	61%	28326	77%	**37	100%
Vihtavuori 3N37	<<locked>>	61%	26295	71%	**63	100%
[Vihtavuori 3N38]*	<<locked>>	61%	18913	51%	**06	85%
[Vihtavuori N105]*	<<locked>>	61%	15171	41%	**34	84%
Vihtavuori N32C Tin Star	<<locked>>	61%	19508	53%	**12	100%
Vihtavuori N330	<<locked>>	61%	30864	83%	**50	100%
Vihtavuori N340	<<locked>>	61%	27789	75%	**27	100%
Vihtavuori N350	<<locked>>	61%	24366	66%	**17	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