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

Recommended Powder(s): ADI AP 100

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 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.380" \| 9.7mm
Shank Seated Depth:	0.380" \| 9.7mm
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_B3515_C511
Last updated:	2025-01-01

Load data for 66 loads in caliber .357 Auto Magnum with .357 | 158gr | LOS FP bullet and 33 powders such as ADI AP 100. 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 "Dashboard " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
We recommend you limit powder range to relevant brands to speed up re-calculation of results
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.
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>>	78%	33243	90%	**04	100%
ADI APS 450	<<locked>>	63%	32880	89%	**48	100%
[Accurate 4100]*	<<locked>>	79%	31836	86%	**44	84%
Accurate No. 9	<<locked>>	68%	33243	90%	**57	91%
Accurate Solo 1250	<<locked>>	65%	32938	89%	**60	100%
Accurate TCM	<<locked>>	68%	32518	88%	**37	91%
[Alliant 2400]*	<<locked>>	76%	32779	89%	**63	87%
Alliant BLUE DOT	<<locked>>	79%	33011	89%	**53	95%
Alliant POWER PISTOL	<<locked>>	62%	31720	86%	**07	100%
Alliant UNIQUE	<<locked>>	63%	32547	88%	**19	100%
[Hodgdon LilGun]*	<<locked>>	88%	32358	87%	**26	87%
Hodgdon TrailBoss	<<locked>>	96%	21408	58%	**04	100%
Lovex D037.2	<<locked>>	67%	32576	88%	**47	90%
Maxam CSB 1	<<locked>>	68%	33199	90%	**57	100%
Maxam CSB 2	<<locked>>	63%	32677	88%	**43	100%
Maxam CSB 3	<<locked>>	63%	32430	88%	**20	100%
[Ramshot Enforcer]*	<<locked>>	77%	32387	88%	**67	88%
ReloadSwiss RS 14	<<locked>>	96%	20276	55%	**17	100%
ReloadSwiss RS 20	<<locked>>	65%	32851	89%	**19	100%
ReloadSwiss RS 24	<<locked>>	65%	32547	88%	**27	97%
Rottweil P 806	<<locked>>	68%	32866	89%	**27	100%
SNPE Vectan A0	<<locked>>	67%	32547	88%	**86	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	96%	26237	71%	**52	87%
SNPE Vectan BA7 1/2	<<locked>>	70%	32010	87%	**35	100%
Shooters World Heavy Pistol	<<locked>>	67%	32576	88%	**47	90%
Somchem MS200	<<locked>>	63%	32329	87%	**89	100%
Vihtavuori 3N37	<<locked>>	64%	32082	87%	**58	100%
Vihtavuori 3N38	<<locked>>	74%	31778	86%	**11	97%
Vihtavuori N105	<<locked>>	79%	32547	88%	**53	100%
[Vihtavuori N110]*	<<locked>>	96%	33054	89%	**90	88%
Vihtavuori N32C Tin Star	<<locked>>	82%	33243	90%	**48	100%
Vihtavuori N340	<<locked>>	63%	31995	87%	**93	100%
Vihtavuori N350	<<locked>>	68%	33011	89%	**65	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	20726	56%	**65	96%
ADI APS 450	<<locked>>	61%	31009	84%	**25	100%
[Accurate 4100]*	<<locked>>	74%	26789	72%	**52	80%
[Accurate No. 9]*	<<locked>>	61%	25425	69%	**16	86%
Accurate Solo 1250	<<locked>>	61%	29211	79%	**07	100%
[Accurate TCM]*	<<locked>>	61%	26092	71%	**22	88%
[Alliant 2400]*	<<locked>>	65%	22916	62%	**70	80%
[Alliant BLUE DOT]*	<<locked>>	61%	19551	53%	**65	85%
Alliant POWER PISTOL	<<locked>>	61%	30095	81%	**88	99%
Alliant UNIQUE	<<locked>>	61%	30719	83%	**89	100%
[Hodgdon LilGun]*	<<locked>>	79%	23728	64%	**48	80%
Hodgdon TrailBoss	<<locked>>	61%	10936	30%	**1	100%
[Lovex D037.2]*	<<locked>>	61%	26020	70%	**19	86%
Maxam CSB 1	<<locked>>	61%	27934	76%	**88	100%
Maxam CSB 2	<<locked>>	61%	30777	83%	**14	100%
Maxam CSB 3	<<locked>>	61%	30429	82%	**98	100%
[Ramshot Enforcer]*	<<locked>>	66%	22655	61%	**80	81%
ReloadSwiss RS 14	<<locked>>	61%	10617	29%	**1	100%
ReloadSwiss RS 20	<<locked>>	61%	29254	79%	**63	100%
ReloadSwiss RS 24	<<locked>>	61%	28181	76%	**48	95%
Rottweil P 806	<<locked>>	61%	26223	71%	**19	100%
SNPE Vectan A0	<<locked>>	61%	27572	75%	**14	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	87%	20233	55%	**14	81%
SNPE Vectan BA7 1/2	<<locked>>	61%	24685	67%	**17	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	26020	70%	**19	86%
Somchem MS200	<<locked>>	61%	30574	83%	**63	100%
Vihtavuori 3N37	<<locked>>	61%	28863	78%	**06	100%
Vihtavuori 3N38	<<locked>>	61%	21219	57%	**01	92%
Vihtavuori N105	<<locked>>	61%	17579	48%	**58	92%
[Vihtavuori N110]*	<<locked>>	84%	22510	61%	**93	80%
Vihtavuori N32C Tin Star	<<locked>>	61%	20813	56%	**4	100%
Vihtavuori N340	<<locked>>	61%	30182	82%	**70	100%
Vihtavuori N350	<<locked>>	61%	26455	72%	**66	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