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

Recommended Powder(s):

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:	<<locked>>
Caliber:	.357 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	25.6 Grains of Water \| 1.66 cm³
Primer Size:	Small Pistol Magnum (SPM)
Max. allowed Pressure:	43511 psi \| 3000 bar
LID:	LID_B7450_C513
Last updated:	2026-01-30

Load data for 138 loads in caliber .357 Magnum with .356 | 125gr | H&N KS KB bullet and 69 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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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>>	96%	35737	82%	**26	98%
ADI AP 70N	<<locked>>	70%	39088	90%	**57	100%
ADI APS 350	<<locked>>	76%	38725	89%	**66	100%
ADI APS 450	<<locked>>	77%	37768	87%	**86	100%
ADI AS 30	<<locked>>	79%	38247	88%	**45	100%
ADI AS 50N	<<locked>>	76%	39073	90%	**98	100%
Accurate No. 2	<<locked>>	75%	37695	87%	**60	100%
Accurate No. 5	<<locked>>	62%	38870	89%	**81	100%
Accurate No. 7	<<locked>>	78%	38493	88%	**31	92%
[Accurate No. 9]*	<<locked>>	86%	38754	89%	**11	86%
Accurate Solo 1000	<<locked>>	79%	38986	90%	**81	100%
Accurate Solo 1250	<<locked>>	83%	38885	89%	**40	100%
[Accurate TCM]*	<<locked>>	86%	38624	89%	**04	87%
Alliant BE-86	<<locked>>	81%	38130	88%	**11	100%
[Alliant BLUE DOT]*	<<locked>>	96%	34635	80%	**52	89%
Alliant BULLSEYE	<<locked>>	72%	38101	88%	**09	100%
Alliant Herco 👍	<<locked>>	96%	36608	84%	**90	100%
Alliant POWER PISTOL	<<locked>>	81%	37811	87%	**01	98%
Alliant Sport Pistol	<<locked>>	67%	37826	87%	**06	100%
Alliant UNIQUE	<<locked>>	82%	37927	87%	**12	100%
Baschieri & Pellagri 100	<<locked>>	79%	38508	89%	**81	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	96%	37202	85%	**75	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	74%	38711	89%	**94	100%
Hodgdon Clays	<<locked>>	75%	38029	87%	**73	100%
Hodgdon HS-6	<<locked>>	68%	38986	90%	**52	100%
Hodgdon Longshot	<<locked>>	64%	38000	87%	**39	100%
Hodgdon Universal	<<locked>>	77%	39088	90%	**57	100%
Hodgdon CFE Pistol	<<locked>>	79%	39160	90%	**57	100%
Hodgdon TrailBoss	<<locked>>	96%	14663	34%	**8	100%
Lovex D036	<<locked>>	62%	38943	89%	**81	100%
Lovex D037.1	<<locked>>	78%	38493	88%	**31	92%
[Lovex D037.2]*	<<locked>>	85%	38754	89%	**11	86%
Lovex S011	<<locked>>	67%	37782	87%	**94	100%
Lovex S020	<<locked>>	75%	38885	89%	**73	100%
Maxam CSB 1	<<locked>>	87%	39073	90%	**37	100%
Maxam CSB 2	<<locked>>	83%	38885	89%	**37	100%
Maxam CSB 3	<<locked>>	82%	38899	89%	**14	100%
Maxam CSB 4	<<locked>>	79%	38769	89%	**85	100%
Maxam CSB 5	<<locked>>	74%	38189	88%	**29	100%
[Ramshot Enforcer]*	<<locked>>	96%	36071	83%	**94	82%
Ramshot Silhouette	<<locked>>	68%	38464	88%	**19	100%
Ramshot True Blue	<<locked>>	63%	38522	89%	**42	100%
ReloadSwiss RS 12	<<locked>>	72%	38116	88%	**17	100%
ReloadSwiss RS 14	<<locked>>	96%	13271	30%	**4	100%
ReloadSwiss RS 20	<<locked>>	83%	37898	87%	**93	100%
ReloadSwiss RS 24	<<locked>>	84%	38841	89%	**17	94%
Rottweil P 801	<<locked>>	67%	38072	88%	**71	100%
Rottweil P 806 👍	<<locked>>	90%	39102	90%	**37	100%
SNPE Vectan A0	<<locked>>	86%	38609	89%	**73	100%
SNPE Vectan BA 9	<<locked>>	78%	38928	89%	**40	100%
SNPE Vectan BA10	<<locked>>	72%	37753	87%	**86	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	90%	38348	88%	**22	100%
SNPE Vectan BA9 1/2	<<locked>>	79%	39117	90%	**50	100%
SNPE Vectan SP 2	<<locked>>	78%	38783	89%	**27	99%
Shooters World Auto Pistol	<<locked>>	62%	38943	89%	**81	100%
[Shooters World Heavy Pistol]*	<<locked>>	85%	38754	89%	**11	86%
Shooters World Major Pistol	<<locked>>	78%	38493	88%	**31	92%
Somchem MP200	<<locked>>	76%	38029	87%	**03	100%
Somchem MS200	<<locked>>	81%	38754	89%	**86	100%
Somchem S221	<<locked>>	71%	38276	88%	**81	96%
Vihtavuori 3N37 👍	<<locked>>	84%	38827	89%	**62	100%
Vihtavuori 3N38	<<locked>>	95%	38043	87%	**94	95%
Vihtavuori N105	<<locked>>	97%	31633	73%	**42	96%
Vihtavuori N320	<<locked>>	76%	38537	89%	**88	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	33243	76%	**47	100%
Vihtavuori N330	<<locked>>	77%	38667	89%	**53	100%
Vihtavuori N340	<<locked>>	81%	38783	89%	**90	100%
Vihtavuori N350 👍	<<locked>>	86%	38218	88%	**45	100%
Winchester 231	<<locked>>	66%	38450	88%	**24	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	61%	13227	30%	**37	82%
ADI AP 70N	<<locked>>	61%	30269	70%	**42	100%
ADI APS 350	<<locked>>	62%	27789	64%	**29	100%
ADI APS 450	<<locked>>	62%	26484	61%	**42	100%
ADI AS 30	<<locked>>	61%	24279	56%	**52	100%
ADI AS 50N	<<locked>>	61%	26455	61%	**27	100%
Accurate No. 2	<<locked>>	60%	23540	54%	**53	100%
Accurate No. 5	<<locked>>	61%	36622	84%	**45	99%
[Accurate No. 7]*	<<locked>>	63%	21857	50%	**16	81%
[Accurate No. 9]*	<<locked>>	78%	28732	66%	**47	80%
Accurate Solo 1000	<<locked>>	61%	25193	58%	**94	100%
Accurate Solo 1250	<<locked>>	61%	21147	49%	**84	100%
[Accurate TCM]*	<<locked>>	76%	26948	62%	**04	80%
Alliant BE-86	<<locked>>	60%	21292	49%	**78	100%
[Alliant BLUE DOT]*	<<locked>>	81%	22640	52%	**16	80%
Alliant BULLSEYE	<<locked>>	60%	27064	62%	**42	100%
Alliant Herco	<<locked>>	61%	14765	34%	**76	98%
[Alliant POWER PISTOL]*	<<locked>>	61%	20407	47%	**70	89%
Alliant Sport Pistol	<<locked>>	61%	31676	73%	**17	100%
Alliant UNIQUE	<<locked>>	61%	20769	48%	**30	100%
Baschieri & Pellagri 100	<<locked>>	61%	23656	54%	**81	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	61%	14402	33%	**10	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	61%	25686	59%	**30	100%
Hodgdon Clays	<<locked>>	62%	28253	65%	**42	100%
Hodgdon HS-6	<<locked>>	61%	30313	70%	**24	99%
Hodgdon Longshot	<<locked>>	61%	33518	77%	**70	100%
Hodgdon Universal	<<locked>>	61%	24758	57%	**60	100%
Hodgdon CFE Pistol	<<locked>>	62%	23612	54%	**34	100%
Hodgdon TrailBoss	<<locked>>	75%	9514	22%	**7	100%
Lovex D036	<<locked>>	61%	36579	84%	**45	99%
[Lovex D037.1]*	<<locked>>	63%	21857	50%	**16	81%
[Lovex D037.2]*	<<locked>>	77%	28732	66%	**47	80%
Lovex S011	<<locked>>	62%	32430	75%	**25	100%
Lovex S020	<<locked>>	61%	25048	58%	**86	100%
Maxam CSB 1	<<locked>>	60%	19218	44%	**42	100%
Maxam CSB 2	<<locked>>	62%	21292	49%	**91	100%
Maxam CSB 3	<<locked>>	60%	22365	51%	**75	100%
Maxam CSB 4	<<locked>>	62%	25034	58%	**01	100%
Maxam CSB 5	<<locked>>	61%	27470	63%	**88	100%
[Ramshot Enforcer]*	<<locked>>	94%	32735	75%	**52	81%
Ramshot Silhouette	<<locked>>	61%	30560	70%	**04	100%
Ramshot True Blue	<<locked>>	61%	35201	81%	**93	100%
ReloadSwiss RS 12	<<locked>>	61%	28021	64%	**80	100%
ReloadSwiss RS 14	<<locked>>	76%	8760	20%	**3	100%
ReloadSwiss RS 20	<<locked>>	61%	19406	45%	**01	100%
[ReloadSwiss RS 24]*	<<locked>>	62%	18579	43%	**20	81%
Rottweil P 801	<<locked>>	61%	31589	73%	**02	100%
[Rottweil P 806]*	<<locked>>	61%	13343	31%	**12	87%
SNPE Vectan A0	<<locked>>	61%	19885	46%	**68	100%
SNPE Vectan BA 9	<<locked>>	62%	24526	56%	**43	100%
SNPE Vectan BA10	<<locked>>	61%	28819	66%	**75	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	16331	38%	**12	92%
SNPE Vectan BA9 1/2	<<locked>>	61%	23105	53%	**20	100%
SNPE Vectan SP 2	<<locked>>	61%	21350	49%	**12	92%
Shooters World Auto Pistol	<<locked>>	61%	36579	84%	**45	99%
[Shooters World Heavy Pistol]*	<<locked>>	77%	28732	66%	**47	80%
[Shooters World Major Pistol]*	<<locked>>	63%	21857	50%	**16	81%
Somchem MP200	<<locked>>	62%	24816	57%	**99	100%
Somchem MS200	<<locked>>	61%	22278	51%	**34	100%
Somchem S221	<<locked>>	61%	26614	61%	**91	91%
Vihtavuori 3N37	<<locked>>	61%	19072	44%	**14	96%
[Vihtavuori 3N38]*	<<locked>>	71%	17782	41%	**94	81%
[Vihtavuori N105]*	<<locked>>	73%	14750	34%	**58	80%
Vihtavuori N320	<<locked>>	61%	25164	58%	**14	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	14330	33%	**5	100%
Vihtavuori N330	<<locked>>	61%	23757	55%	**47	100%
Vihtavuori N340	<<locked>>	60%	20726	48%	**04	100%
Vihtavuori N350	<<locked>>	61%	17390	40%	**71	95%
Winchester 231	<<locked>>	61%	33402	77%	**58	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