Load data for .357 Auto Magnum + .357 | 158gr | Geco FMJ FLAT NOSE

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| Geco FMJ FLAT NOSE
Manufacturer SKU:	2318155
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.674" \| 17.1mm
Caliber:	.357 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.397" \| 10.1mm
Shank Seated Depth:	0.397" \| 10.1mm
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_B9008_C511
Last updated:	2025-01-01

Load data for 72 loads in caliber .357 Auto Magnum with .357 | 158gr | Geco FMJ FLAT NOSE bullet and 36 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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Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
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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>>	79%	32822	89%	**94	100%
ADI APS 450	<<locked>>	63%	32416	88%	**42	100%
ADI AS 30	<<locked>>	64%	33112	90%	**78	100%
[Accurate 4100]*	<<locked>>	81%	32068	87%	**40	83%
Accurate No. 9	<<locked>>	69%	32924	89%	**44	90%
Accurate Solo 1000	<<locked>>	63%	33243	90%	**11	100%
Accurate Solo 1250	<<locked>>	65%	32271	87%	**47	100%
Accurate TCM	<<locked>>	69%	32880	89%	**47	92%
[Alliant 2400]*	<<locked>>	78%	32764	89%	**70	87%
Alliant BLUE DOT	<<locked>>	79%	32314	87%	**27	94%
Alliant POWER PISTOL	<<locked>>	64%	32764	89%	**30	100%
Alliant UNIQUE	<<locked>>	63%	31792	86%	**12	100%
Baschieri & Pellagri 100	<<locked>>	63%	32721	88%	**07	100%
[Hodgdon LilGun]*	<<locked>>	88%	31821	86%	**09	87%
Hodgdon TrailBoss	<<locked>>	94%	19841	54%	**1	100%
Lovex D037.2	<<locked>>	68%	32068	87%	**40	90%
Maxam CSB 1	<<locked>>	68%	32590	88%	**47	100%
Maxam CSB 2	<<locked>>	63%	31792	86%	**30	100%
Maxam CSB 3	<<locked>>	63%	31720	86%	**17	100%
[Ramshot Enforcer]*	<<locked>>	78%	32648	88%	**80	89%
ReloadSwiss RS 14	<<locked>>	96%	19493	53%	**07	100%
ReloadSwiss RS 20	<<locked>>	65%	32111	87%	**06	100%
ReloadSwiss RS 24	<<locked>>	66%	31894	86%	**17	97%
Rottweil P 806	<<locked>>	69%	32735	89%	**21	100%
SNPE Vectan A0	<<locked>>	67%	32010	87%	**86	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	96%	24685	67%	**09	85%
SNPE Vectan BA7 1/2	<<locked>>	72%	33040	89%	**55	100%
Shooters World Heavy Pistol	<<locked>>	68%	32068	87%	**40	90%
Somchem MS200	<<locked>>	63%	31734	86%	**86	100%
Vihtavuori 3N37	<<locked>>	66%	33054	89%	**68	100%
Vihtavuori 3N38	<<locked>>	76%	32706	88%	**21	97%
Vihtavuori N105	<<locked>>	80%	31633	86%	**40	99%
[Vihtavuori N110]*	<<locked>>	96%	30806	83%	**53	87%
Vihtavuori N32C Tin Star	<<locked>>	82%	32619	88%	**45	100%
Vihtavuori N340	<<locked>>	65%	33243	90%	**06	100%
Vihtavuori N350	<<locked>>	68%	32547	88%	**58	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	20073	54%	**55	96%
ADI APS 450	<<locked>>	60%	30443	82%	**12	100%
ADI AS 30	<<locked>>	61%	31009	84%	**55	100%
[Accurate 4100]*	<<locked>>	77%	27992	76%	**75	81%
[Accurate No. 9]*	<<locked>>	61%	24787	67%	**93	85%
Accurate Solo 1000	<<locked>>	60%	31212	84%	**84	100%
Accurate Solo 1250	<<locked>>	61%	28427	77%	**94	100%
[Accurate TCM]*	<<locked>>	61%	24816	67%	**96	86%
[Alliant 2400]*	<<locked>>	68%	23786	64%	**93	81%
[Alliant BLUE DOT]*	<<locked>>	61%	18797	51%	**55	84%
Alliant POWER PISTOL	<<locked>>	61%	29341	79%	**71	99%
Alliant UNIQUE	<<locked>>	61%	29834	81%	**83	100%
Baschieri & Pellagri 100	<<locked>>	61%	30792	83%	**84	100%
[Hodgdon LilGun]*	<<locked>>	81%	23989	65%	**52	80%
Hodgdon TrailBoss	<<locked>>	62%	10675	29%	**8	100%
[Lovex D037.2]*	<<locked>>	61%	25382	69%	**06	85%
Maxam CSB 1	<<locked>>	61%	27166	73%	**71	100%
Maxam CSB 2	<<locked>>	61%	29907	81%	**07	100%
Maxam CSB 3	<<locked>>	61%	29762	80%	**91	100%
[Ramshot Enforcer]*	<<locked>>	68%	22350	60%	**66	80%
ReloadSwiss RS 14	<<locked>>	61%	9819	27%	**8	100%
ReloadSwiss RS 20	<<locked>>	61%	28500	77%	**60	100%
ReloadSwiss RS 24	<<locked>>	61%	27412	74%	**45	95%
Rottweil P 806	<<locked>>	61%	24584	66%	**86	100%
SNPE Vectan A0	<<locked>>	61%	26890	73%	**11	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	87%	19754	53%	**04	80%
SNPE Vectan BA7 1/2	<<locked>>	61%	24018	65%	**11	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	25382	69%	**06	85%
Somchem MS200	<<locked>>	61%	29863	81%	**60	100%
Vihtavuori 3N37	<<locked>>	61%	28224	76%	**96	100%
Vihtavuori 3N38	<<locked>>	61%	20494	55%	**84	91%
Vihtavuori N105	<<locked>>	61%	16592	45%	**29	91%
[Vihtavuori N110]*	<<locked>>	86%	23090	62%	**09	81%
Vihtavuori N32C Tin Star	<<locked>>	60%	19972	54%	**1	100%
Vihtavuori N340	<<locked>>	61%	29559	80%	**57	100%
Vihtavuori N350	<<locked>>	61%	25802	70%	**50	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.