Load data for .357 SIG + .356 | 125gr | H&N KS KB

Recommended Powder(s): Alliant UNIQUE, ReloadSwiss RS 20, Somchem MS200, Vihtavuori 3N37, Vihtavuori N340

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.356 \| 125gr \| H&N KS KB
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.530" \| 13.5mm
Caliber:	.357 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.267" \| 6.8mm
Shank Seated Depth:	0.267" \| 6.8mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B7450_C518
Last updated:	2025-01-01

Load data for 116 loads in caliber .357 SIG with .356 | 125gr | H&N KS KB bullet and 58 powders such as Alliant UNIQUE, ReloadSwiss RS 20, Somchem MS200, Vihtavuori 3N37, 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".

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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>>	97%	25991	59%	**86	91%
ADI AP 70N	<<locked>>	79%	38087	86%	**78	100%
ADI APS 350	<<locked>>	85%	39639	90%	**88	100%
ADI APS 450	<<locked>>	85%	38377	87%	**11	100%
ADI AS 30	<<locked>>	89%	37855	86%	**60	100%
ADI AS 50N	<<locked>>	85%	38145	86%	**12	100%
Accurate No. 2	<<locked>>	85%	38232	86%	**78	100%
Accurate No. 5	<<locked>>	71%	38566	87%	**80	98%
[Accurate No. 7]*	<<locked>>	90%	38653	87%	**29	87%
Accurate Solo 1000	<<locked>>	87%	38348	87%	**93	100%
Accurate Solo 1250	<<locked>>	94%	38696	87%	**62	100%
Alliant BULLSEYE	<<locked>>	83%	38667	87%	**34	100%
Alliant POWER PISTOL	<<locked>>	94%	38319	87%	**29	96%
Alliant UNIQUE 👍	<<locked>>	95%	38305	87%	**44	100%
Baschieri & Pellagri 100	<<locked>>	90%	39349	89%	**06	100%
Hodgdon Clays	<<locked>>	82%	37884	86%	**81	100%
Hodgdon HP38	<<locked>>	67%	39813	90%	**55	100%
Hodgdon HS-6	<<locked>>	78%	39595	89%	**73	99%
Hodgdon Longshot	<<locked>>	74%	39102	88%	**63	100%
Hodgdon Universal	<<locked>>	88%	38087	86%	**78	100%
Hodgdon TrailBoss	<<locked>>	93%	10138	23%	**7	100%
Lovex D036	<<locked>>	71%	38522	87%	**80	98%
[Lovex D037.1]*	<<locked>>	90%	38653	87%	**29	87%
Lovex S011	<<locked>>	75%	37840	86%	**16	100%
Lovex S020	<<locked>>	87%	39508	89%	**04	100%
Maxam CSB 1	<<locked>>	95%	35795	81%	**25	100%
Maxam CSB 2	<<locked>>	97%	39479	89%	**85	100%
Maxam CSB 3	<<locked>>	93%	39392	89%	**39	100%
Maxam CSB 4	<<locked>>	88%	38014	86%	**06	100%
Maxam CSB 5	<<locked>>	84%	39276	89%	**63	100%
Ramshot Silhouette	<<locked>>	78%	39001	88%	**40	100%
Ramshot True Blue	<<locked>>	73%	39639	90%	**63	100%
Ramshot Zip	<<locked>>	67%	38363	87%	**48	100%
ReloadSwiss RS 12	<<locked>>	84%	39291	89%	**62	100%
ReloadSwiss RS 14	<<locked>>	95%	9152	21%	**3	99%
ReloadSwiss RS 20 👍	<<locked>>	96%	37217	84%	**27	100%
[ReloadSwiss RS 24]*	<<locked>>	96%	37855	86%	**03	89%
Rottweil P 801	<<locked>>	78%	39436	89%	**29	100%
Rottweil P 806	<<locked>>	97%	29051	66%	**50	97%
SNPE Vectan A0	<<locked>>	96%	37362	84%	**75	100%
SNPE Vectan BA 9	<<locked>>	89%	39494	89%	**68	100%
SNPE Vectan BA10	<<locked>>	79%	38363	87%	**11	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	32605	74%	**68	98%
SNPE Vectan BA9 1/2	<<locked>>	91%	39726	90%	**81	100%
Shooters World Auto Pistol	<<locked>>	71%	38522	87%	**80	98%
[Shooters World Major Pistol]*	<<locked>>	90%	38653	87%	**29	87%
Somchem MP200	<<locked>>	87%	38261	86%	**27	100%
Somchem MS200 👍	<<locked>>	92%	38319	87%	**98	100%
Somchem S221	<<locked>>	83%	39653	90%	**06	93%
Vihtavuori 3N37 👍	<<locked>>	97%	39494	89%	**86	100%
[Vihtavuori 3N38]*	<<locked>>	96%	26121	59%	**09	84%
Vihtavuori N310	<<locked>>	72%	39102	88%	**27	100%
Vihtavuori N320	<<locked>>	87%	39218	89%	**25	100%
Vihtavuori N32C Tin Star	<<locked>>	94%	24192	55%	**83	100%
Vihtavuori N330	<<locked>>	88%	37898	86%	**78	100%
Vihtavuori N340 👍	<<locked>>	93%	38653	87%	**07	100%
Vihtavuori N350	<<locked>>	95%	34534	78%	**17	99%
Winchester 231	<<locked>>	74%	38363	87%	**48	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	76%	15069	34%	**33	80%
ADI AP 70N	<<locked>>	61%	22089	50%	**58	100%
ADI APS 350	<<locked>>	60%	22408	51%	**8	100%
ADI APS 450	<<locked>>	60%	21060	48%	**1	100%
ADI AS 30	<<locked>>	61%	19218	43%	**07	100%
ADI AS 50N	<<locked>>	61%	20001	45%	**66	100%
Accurate No. 2	<<locked>>	61%	17999	41%	**63	96%
Accurate No. 5	<<locked>>	61%	26643	60%	**02	93%
[Accurate No. 7]*	<<locked>>	80%	26977	61%	**52	81%
Accurate Solo 1000	<<locked>>	61%	20001	45%	**43	100%
Accurate Solo 1250	<<locked>>	61%	15679	35%	**10	100%
Alliant BULLSEYE	<<locked>>	61%	21016	47%	**58	99%
[Alliant POWER PISTOL]*	<<locked>>	64%	15882	36%	**93	81%
Alliant UNIQUE	<<locked>>	61%	15011	34%	**33	96%
Baschieri & Pellagri 100	<<locked>>	61%	18014	41%	**20	100%
Hodgdon Clays	<<locked>>	60%	22655	51%	**4	100%
Hodgdon HP38	<<locked>>	61%	32518	73%	**76	100%
Hodgdon HS-6	<<locked>>	61%	21770	49%	**98	92%
Hodgdon Longshot	<<locked>>	61%	24584	56%	**53	96%
Hodgdon Universal	<<locked>>	61%	18347	41%	**86	100%
Hodgdon TrailBoss	<<locked>>	70%	6121	14%	**9	98%
Lovex D036	<<locked>>	61%	26614	60%	**02	93%
[Lovex D037.1]*	<<locked>>	80%	26977	61%	**52	81%
Lovex S011	<<locked>>	62%	25396	57%	**61	100%
Lovex S020	<<locked>>	60%	17187	39%	**73	99%
Maxam CSB 1	<<locked>>	62%	14924	34%	**8	99%
Maxam CSB 2	<<locked>>	60%	14011	32%	**01	100%
Maxam CSB 3	<<locked>>	61%	17318	39%	**27	100%
Maxam CSB 4	<<locked>>	60%	18420	42%	**30	100%
Maxam CSB 5	<<locked>>	60%	21176	48%	**37	100%
Ramshot Silhouette	<<locked>>	62%	22727	51%	**01	98%
Ramshot True Blue	<<locked>>	61%	25077	57%	**53	96%
Ramshot Zip	<<locked>>	61%	31285	71%	**66	100%
ReloadSwiss RS 12	<<locked>>	61%	19638	44%	**06	100%
ReloadSwiss RS 14	<<locked>>	72%	5642	13%	**6	93%
ReloadSwiss RS 20	<<locked>>	60%	13271	30%	**04	96%
[ReloadSwiss RS 24]*	<<locked>>	80%	23148	52%	**63	81%
Rottweil P 801	<<locked>>	62%	24149	55%	**42	100%
[Rottweil P 806]*	<<locked>>	71%	11095	25%	**27	80%
SNPE Vectan A0	<<locked>>	61%	14953	34%	**1	95%
SNPE Vectan BA 9	<<locked>>	60%	17941	41%	**50	100%
SNPE Vectan BA10	<<locked>>	61%	24076	54%	**37	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	11922	27%	**8	83%
SNPE Vectan BA9 1/2	<<locked>>	61%	17332	39%	**50	100%
Shooters World Auto Pistol	<<locked>>	61%	26614	60%	**02	93%
[Shooters World Major Pistol]*	<<locked>>	80%	26977	61%	**52	81%
Somchem MP200	<<locked>>	60%	17550	40%	**86	96%
Somchem MS200	<<locked>>	60%	16012	36%	**30	97%
[Somchem S221]*	<<locked>>	61%	18869	43%	**52	81%
[Vihtavuori 3N37]*	<<locked>>	61%	13285	30%	**04	87%
[Vihtavuori 3N38]*	<<locked>>	90%	21553	49%	**27	80%
Vihtavuori N310	<<locked>>	61%	28514	64%	**09	100%
Vihtavuori N320	<<locked>>	60%	18188	41%	**47	100%
Vihtavuori N32C Tin Star	<<locked>>	60%	9906	22%	**4	100%
Vihtavuori N330	<<locked>>	60%	16027	36%	**50	100%
Vihtavuori N340	<<locked>>	61%	15432	35%	**27	96%
[Vihtavuori N350]*	<<locked>>	61%	12140	27%	**5	85%
Winchester 231	<<locked>>	61%	25019	57%	**78	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