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

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.356 \| 125gr \| H&N KS HS LG
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.547" \| 13.9mm
Caliber:	.357 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.270" \| 6.9mm
Shank Seated Depth:	0.250" \| 6.4mm
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_B7448_C511
Last updated:	2025-01-01

Load data for 90 loads in caliber .357 Auto Magnum with .356 | 125gr | H&N KS HS LG bullet and 45 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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C.O.L. (mm)
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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>>	81%	31807	86%	**91	99%
ADI APS 350	<<locked>>	63%	31937	86%	**93	100%
ADI APS 450	<<locked>>	66%	32967	89%	**32	100%
ADI AS 30	<<locked>>	65%	32082	87%	**65	100%
ADI AS 50N	<<locked>>	63%	33098	89%	**27	100%
Accurate No. 2	<<locked>>	63%	32329	87%	**06	100%
Accurate No. 7	<<locked>>	65%	32953	89%	**50	92%
[Accurate No. 9]*	<<locked>>	72%	32953	89%	**40	86%
Accurate Solo 1000	<<locked>>	65%	32851	89%	**11	100%
Accurate Solo 1250	<<locked>>	67%	31488	85%	**44	100%
[Accurate TCM]*	<<locked>>	71%	32097	87%	**27	88%
[Alliant 2400]*	<<locked>>	81%	32010	87%	**54	83%
Alliant BLUE DOT	<<locked>>	83%	32039	87%	**31	91%
Alliant POWER PISTOL	<<locked>>	67%	32213	87%	**31	98%
Alliant UNIQUE	<<locked>>	69%	33199	90%	**55	100%
Baschieri & Pellagri 100	<<locked>>	65%	32314	87%	**04	100%
Hodgdon Clays	<<locked>>	63%	32561	88%	**16	100%
Hodgdon Universal	<<locked>>	62%	32198	87%	**67	100%
Hodgdon TrailBoss	<<locked>>	96%	18594	50%	**29	100%
Lovex D037.1	<<locked>>	65%	32953	89%	**50	92%
[Lovex D037.2]*	<<locked>>	71%	32242	87%	**27	86%
Maxam CSB 1	<<locked>>	71%	32271	87%	**60	100%
Maxam CSB 2	<<locked>>	67%	32068	87%	**47	100%
Maxam CSB 3	<<locked>>	68%	33199	90%	**47	100%
Maxam CSB 4	<<locked>>	65%	32764	89%	**11	100%
[Ramshot Enforcer]*	<<locked>>	82%	32445	88%	**60	84%
ReloadSwiss RS 14	<<locked>>	96%	16955	46%	**29	100%
ReloadSwiss RS 20	<<locked>>	68%	31662	86%	**09	100%
ReloadSwiss RS 24	<<locked>>	69%	31908	86%	**17	94%
Rottweil P 806 👍	<<locked>>	74%	33025	89%	**31	100%
SNPE Vectan A0	<<locked>>	70%	32068	87%	**93	100%
SNPE Vectan BA 9	<<locked>>	65%	32938	89%	**76	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	76%	33083	89%	**62	100%
SNPE Vectan BA9 1/2	<<locked>>	65%	32416	88%	**67	100%
[Shooters World Heavy Pistol]*	<<locked>>	71%	32242	87%	**27	86%
Shooters World Major Pistol	<<locked>>	65%	32953	89%	**50	92%
Somchem MP200	<<locked>>	63%	32329	87%	**26	100%
Somchem MS200	<<locked>>	67%	32692	88%	**09	100%
Vihtavuori 3N37	<<locked>>	69%	32590	88%	**78	100%
Vihtavuori 3N38	<<locked>>	80%	33011	89%	**34	95%
Vihtavuori N105	<<locked>>	85%	32837	89%	**77	98%
Vihtavuori N32C Tin Star	<<locked>>	85%	32024	87%	**29	100%
Vihtavuori N330	<<locked>>	62%	31459	85%	**60	100%
Vihtavuori N340	<<locked>>	67%	32198	87%	**12	100%
Vihtavuori N350	<<locked>>	72%	33185	90%	**78	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	17419	47%	**47	90%
ADI APS 350	<<locked>>	60%	30124	81%	**60	100%
ADI APS 450	<<locked>>	61%	29559	80%	**89	100%
ADI AS 30	<<locked>>	61%	28514	77%	**12	100%
ADI AS 50N	<<locked>>	61%	31285	85%	**04	100%
Accurate No. 2	<<locked>>	61%	30414	82%	**83	100%
Accurate No. 7	<<locked>>	61%	28892	78%	**75	90%
[Accurate No. 9]*	<<locked>>	64%	24468	66%	**60	80%
Accurate Solo 1000	<<locked>>	61%	29385	79%	**52	100%
Accurate Solo 1250	<<locked>>	61%	26440	71%	**68	100%
[Accurate TCM]*	<<locked>>	62%	22669	61%	**11	80%
[Alliant 2400]*	<<locked>>	78%	29341	79%	**85	81%
[Alliant BLUE DOT]*	<<locked>>	67%	19566	53%	**32	81%
Alliant POWER PISTOL	<<locked>>	61%	26513	72%	**09	96%
Alliant UNIQUE	<<locked>>	61%	26832	73%	**44	100%
Baschieri & Pellagri 100	<<locked>>	61%	28906	78%	**55	100%
Hodgdon Clays	<<locked>>	60%	30647	83%	**83	100%
Hodgdon Universal	<<locked>>	61%	30545	83%	**44	100%
Hodgdon TrailBoss	<<locked>>	61%	8731	24%	**6	100%
Lovex D037.1	<<locked>>	61%	28892	78%	**75	90%
[Lovex D037.2]*	<<locked>>	64%	24947	67%	**70	81%
Maxam CSB 1	<<locked>>	61%	24453	66%	**25	100%
Maxam CSB 2	<<locked>>	61%	27108	73%	**62	100%
Maxam CSB 3	<<locked>>	61%	28123	76%	**68	100%
Maxam CSB 4	<<locked>>	61%	29254	79%	**62	100%
[Ramshot Enforcer]*	<<locked>>	77%	27456	74%	**49	80%
ReloadSwiss RS 14	<<locked>>	62%	8093	22%	**3	100%
ReloadSwiss RS 20	<<locked>>	61%	25425	69%	**11	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	24192	65%	**50	89%
Rottweil P 806	<<locked>>	61%	20160	55%	**75	96%
SNPE Vectan A0	<<locked>>	61%	24656	67%	**65	100%
SNPE Vectan BA 9	<<locked>>	61%	29791	81%	**17	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	21422	58%	**39	98%
SNPE Vectan BA9 1/2	<<locked>>	61%	29138	79%	**21	100%
[Shooters World Heavy Pistol]*	<<locked>>	64%	24947	67%	**70	81%
Shooters World Major Pistol	<<locked>>	61%	28892	78%	**75	90%
Somchem MP200	<<locked>>	61%	30734	83%	**96	100%
Somchem MS200	<<locked>>	61%	27920	75%	**30	100%
Vihtavuori 3N37	<<locked>>	61%	25469	69%	**47	100%
[Vihtavuori 3N38]*	<<locked>>	61%	17564	47%	**76	84%
[Vihtavuori N105]*	<<locked>>	61%	13735	37%	**81	81%
Vihtavuori N32C Tin Star	<<locked>>	61%	18159	49%	**99	100%
Vihtavuori N330	<<locked>>	61%	29660	80%	**27	100%
Vihtavuori N340	<<locked>>	61%	27369	74%	**30	100%
Vihtavuori N350	<<locked>>	61%	22916	62%	**85	99%

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.