Load data for .38 Super Auto + .357 | 158gr | Geco FMJ FLAT NOSE

Recommended Powder(s): Alliant Herco, Alliant UNIQUE, Hodgdon Longshot, ReloadSwiss RS 20, Somchem MP200

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:	<<locked>>
Caliber:	.38 Super Auto load data
Case Length (l3):	0.890" \| 22.6mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	17.6 Grains of Water \| 1.14 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	33359 psi \| 2300 bar
LID:	LID_B9008_C583
Last updated:	2026-02-08

Load data for 122 loads in caliber .38 Super Auto with .357 | 158gr | Geco FMJ FLAT NOSE bullet and 61 powders such as Alliant Herco, Alliant UNIQUE, Hodgdon Longshot, ReloadSwiss RS 20, Somchem MP200. 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>>	96%	26614	80%	**60	92%
ADI AP 70N	<<locked>>	69%	29660	89%	**37	100%
ADI APS 350	<<locked>>	70%	29617	89%	**9	100%
ADI APS 450	<<locked>>	73%	29501	88%	**2	100%
ADI AS 30	<<locked>>	77%	29921	90%	**5	100%
ADI AS 50N	<<locked>>	72%	28950	87%	**4	100%
Accurate No. 2	<<locked>>	75%	28892	87%	**27	100%
Accurate No. 5	<<locked>>	63%	29356	88%	**06	96%
[Accurate No. 7]*	<<locked>>	82%	29994	90%	**55	84%
Accurate Solo 1000	<<locked>>	74%	29225	88%	**1	100%
Accurate Solo 1250	<<locked>>	82%	29066	87%	**14	100%
Alliant BE-86	<<locked>>	80%	29240	88%	**10	100%
Alliant BULLSEYE	<<locked>>	71%	28921	87%	**63	100%
Alliant Herco 👍	<<locked>>	97%	28340	85%	**66	100%
Alliant POWER PISTOL	<<locked>>	84%	29631	89%	**45	93%
Alliant Sport Pistol	<<locked>>	67%	29631	89%	**73	100%
Alliant UNIQUE 👍	<<locked>>	82%	28892	87%	**73	100%
Baschieri & Pellagri 100	<<locked>>	77%	29544	89%	**4	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	96%	28340	85%	**4	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	74%	29283	88%	**7	100%
Hodgdon Clays	<<locked>>	70%	29834	89%	**6	100%
Hodgdon HS-6	<<locked>>	69%	30008	90%	**99	97%
Hodgdon Longshot 👍	<<locked>>	65%	29298	88%	**93	99%
Hodgdon Universal	<<locked>>	76%	29660	89%	**37	100%
Hodgdon CFE Pistol	<<locked>>	79%	30023	90%	**33	100%
Lovex D036	<<locked>>	63%	29312	88%	**06	96%
[Lovex D037.1]*	<<locked>>	82%	29994	90%	**55	84%
Lovex S011	<<locked>>	66%	29501	88%	**8	100%
Lovex S020	<<locked>>	75%	29167	87%	**43	100%
Maxam CSB 1	<<locked>>	85%	29356	88%	**14	100%
Maxam CSB 2	<<locked>>	83%	29356	88%	**27	100%
Maxam CSB 3	<<locked>>	79%	28993	87%	**8	100%
Maxam CSB 4	<<locked>>	76%	29399	88%	**4	100%
Maxam CSB 5	<<locked>>	71%	29573	89%	**5	100%
Ramshot Silhouette	<<locked>>	69%	29704	89%	**79	100%
Ramshot True Blue	<<locked>>	64%	29066	87%	**83	98%
ReloadSwiss RS 12	<<locked>>	72%	29312	88%	**14	100%
ReloadSwiss RS 20 👍	<<locked>>	85%	29138	87%	**83	100%
[ReloadSwiss RS 24]*	<<locked>>	87%	29834	89%	**38	87%
Rottweil P 801	<<locked>>	66%	29385	88%	**1	100%
Rottweil P 806	<<locked>>	96%	29530	89%	**01	98%
SNPE Vectan A0	<<locked>>	85%	29776	89%	**37	100%
SNPE Vectan BA 9	<<locked>>	76%	29530	89%	**17	100%
SNPE Vectan BA10	<<locked>>	68%	29486	88%	**2	100%
SNPE Vectan BA7 1/2	<<locked>>	92%	29965	90%	**79	98%
SNPE Vectan BA9 1/2	<<locked>>	78%	29762	89%	**27	100%
SNPE Vectan SP 2	<<locked>>	81%	29356	88%	**61	95%
Shooters World Auto Pistol	<<locked>>	63%	29312	88%	**06	96%
[Shooters World Major Pistol]*	<<locked>>	82%	29994	90%	**55	84%
Somchem MP200 👍	<<locked>>	77%	29863	90%	**73	100%
Somchem MS200	<<locked>>	80%	29254	88%	**47	100%
Somchem S221	<<locked>>	73%	29443	88%	**15	90%
Vihtavuori 3N37	<<locked>>	85%	29515	88%	**06	99%
[Vihtavuori 3N38]*	<<locked>>	96%	27079	81%	**89	86%
[Vihtavuori N105]*	<<locked>>	97%	20871	63%	**37	86%
Vihtavuori N320	<<locked>>	75%	29327	88%	**4	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	26513	79%	**6	100%
Vihtavuori N330	<<locked>>	77%	28964	87%	**33	100%
Vihtavuori N340	<<locked>>	81%	29283	88%	**53	100%
Vihtavuori N350	<<locked>>	89%	29907	90%	**02	99%
Winchester 231	<<locked>>	65%	29312	88%	**07	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	71%	13996	42%	**3	81%
ADI AP 70N	<<locked>>	61%	24207	73%	**8	100%
ADI APS 350	<<locked>>	63%	25019	75%	**0	100%
ADI APS 450	<<locked>>	61%	22263	67%	**0	100%
ADI AS 30	<<locked>>	62%	21161	63%	**0	100%
ADI AS 50N	<<locked>>	61%	21321	64%	**9	100%
Accurate No. 2	<<locked>>	61%	18739	56%	**3	97%
Accurate No. 5	<<locked>>	60%	26861	81%	**66	94%
[Accurate No. 7]*	<<locked>>	76%	23989	72%	**66	80%
Accurate Solo 1000	<<locked>>	61%	20349	61%	**3	100%
Accurate Solo 1250	<<locked>>	62%	16984	51%	**6	100%
Alliant BE-86	<<locked>>	61%	16723	50%	**3	100%
Alliant BULLSEYE	<<locked>>	61%	21553	65%	**5	100%
Alliant Herco	<<locked>>	67%	14185	43%	**3	96%
[Alliant POWER PISTOL]*	<<locked>>	62%	15534	47%	**6	82%
Alliant Sport Pistol	<<locked>>	62%	24947	75%	**10	100%
Alliant UNIQUE	<<locked>>	60%	16085	48%	**3	98%
Baschieri & Pellagri 100	<<locked>>	62%	19464	58%	**0	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	73%	16085	48%	**7	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	60%	19247	58%	**9	100%
Hodgdon Clays	<<locked>>	62%	24149	72%	**0	100%
Hodgdon HS-6	<<locked>>	61%	22989	69%	**01	94%
Hodgdon Longshot	<<locked>>	60%	24555	74%	**24	97%
Hodgdon Universal	<<locked>>	60%	19406	58%	**6	100%
Hodgdon CFE Pistol	<<locked>>	61%	18231	55%	**6	100%
Lovex D036	<<locked>>	60%	26818	80%	**66	94%
[Lovex D037.1]*	<<locked>>	76%	23989	72%	**66	80%
Lovex S011	<<locked>>	62%	26136	78%	**1	100%
Lovex S020	<<locked>>	61%	18507	55%	**6	100%
Maxam CSB 1	<<locked>>	63%	16230	49%	**0	100%
Maxam CSB 2	<<locked>>	61%	15766	47%	**3	100%
Maxam CSB 3	<<locked>>	61%	18391	55%	**0	100%
Maxam CSB 4	<<locked>>	60%	19000	57%	**3	100%
Maxam CSB 5	<<locked>>	62%	23221	70%	**6	100%
Ramshot Silhouette	<<locked>>	60%	22452	67%	**8	99%
Ramshot True Blue	<<locked>>	61%	26760	80%	**47	98%
ReloadSwiss RS 12	<<locked>>	60%	20987	63%	**5	100%
ReloadSwiss RS 20	<<locked>>	60%	14272	43%	**3	98%
[ReloadSwiss RS 24]*	<<locked>>	75%	20595	62%	**1	80%
Rottweil P 801	<<locked>>	60%	24613	74%	**8	100%
[Rottweil P 806]*	<<locked>>	65%	10385	31%	**0	82%
SNPE Vectan A0	<<locked>>	62%	16128	48%	**0	97%
SNPE Vectan BA 9	<<locked>>	61%	18985	57%	**3	100%
SNPE Vectan BA10	<<locked>>	60%	24352	73%	**3	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	65%	14881	45%	**0	89%
SNPE Vectan BA9 1/2	<<locked>>	60%	17941	54%	**6	100%
[SNPE Vectan SP 2]*	<<locked>>	62%	15722	47%	**5	85%
Shooters World Auto Pistol	<<locked>>	60%	26818	80%	**66	94%
[Shooters World Major Pistol]*	<<locked>>	76%	23989	72%	**66	80%
Somchem MP200	<<locked>>	62%	19580	59%	**2	98%
Somchem MS200	<<locked>>	62%	18057	54%	**9	99%
[Somchem S221]*	<<locked>>	61%	20088	60%	**5	84%
Vihtavuori 3N37	<<locked>>	61%	14301	43%	**6	90%
[Vihtavuori 3N38]*	<<locked>>	85%	19566	59%	**1	80%
[Vihtavuori N105]*	<<locked>>	88%	16389	49%	**8	80%
Vihtavuori N320	<<locked>>	60%	19493	58%	**3	100%
Vihtavuori N32C Tin Star	<<locked>>	84%	20508	61%	**0	100%
Vihtavuori N330	<<locked>>	62%	18130	54%	**2	100%
Vihtavuori N340	<<locked>>	61%	16302	49%	**6	98%
[Vihtavuori N350]*	<<locked>>	62%	13648	41%	**7	89%
Winchester 231	<<locked>>	60%	25614	77%	**5	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