Load data for .357 Auto Magnum + .357 | 158gr | H&N KS KB

Recommended Powder(s): ADI AP 100

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| H&N KS KB
Bullet Weight:	158gr \| 10.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.642" \| 16.3mm
Caliber:	.357 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.365" \| 9.3mm
Shank Seated Depth:	0.345" \| 8.8mm
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_B7479_C511
Last updated:	2025-01-01

Load data for 76 loads in caliber .357 Auto Magnum with .357 | 158gr | H&N KS KB bullet and 38 powders such as ADI AP 100. 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>>	79%	33069	89%	**14	100%
ADI APS 450	<<locked>>	63%	32256	87%	**48	100%
ADI AS 30	<<locked>>	64%	32605	88%	**91	100%
[Accurate 4100]*	<<locked>>	81%	32271	87%	**60	84%
Accurate No. 9	<<locked>>	69%	32706	88%	**63	91%
Accurate Solo 1000	<<locked>>	63%	32851	89%	**20	100%
Accurate Solo 1250	<<locked>>	66%	32547	88%	**66	100%
Accurate TCM	<<locked>>	69%	32227	87%	**47	91%
[Alliant 2400]*	<<locked>>	77%	31894	86%	**60	87%
Alliant BLUE DOT	<<locked>>	80%	32648	88%	**50	94%
Alliant POWER PISTOL	<<locked>>	64%	32343	87%	**37	100%
Alliant UNIQUE	<<locked>>	65%	32329	87%	**32	100%
Baschieri & Pellagri 100	<<locked>>	64%	33098	89%	**30	100%
[Hodgdon LilGun]*	<<locked>>	89%	32561	88%	**39	88%
Hodgdon TrailBoss	<<locked>>	96%	19754	53%	**7	100%
Lovex D037.2	<<locked>>	68%	32024	87%	**50	90%
Maxam CSB 1	<<locked>>	67%	31734	86%	**57	100%
Maxam CSB 2	<<locked>>	64%	31589	85%	**43	100%
Maxam CSB 3	<<locked>>	64%	32010	87%	**30	100%
Maxam CSB 4	<<locked>>	63%	32924	89%	**24	100%
[Ramshot Enforcer]*	<<locked>>	79%	32692	88%	**76	88%
ReloadSwiss RS 14	<<locked>>	96%	18304	50%	**04	100%
ReloadSwiss RS 20	<<locked>>	66%	32953	89%	**32	100%
ReloadSwiss RS 24	<<locked>>	67%	32590	88%	**53	97%
Rottweil P 806	<<locked>>	70%	32909	89%	**34	100%
SNPE Vectan A0	<<locked>>	67%	32068	87%	**99	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	96%	24192	65%	**12	85%
SNPE Vectan BA7 1/2	<<locked>>	71%	31720	86%	**48	100%
SNPE Vectan BA9 1/2	<<locked>>	63%	32851	89%	**80	100%
Shooters World Heavy Pistol	<<locked>>	68%	32024	87%	**50	90%
Somchem MS200	<<locked>>	63%	31633	86%	**99	100%
Vihtavuori 3N37	<<locked>>	66%	32605	88%	**75	100%
Vihtavuori 3N38	<<locked>>	77%	33243	90%	**50	98%
Vihtavuori N105	<<locked>>	81%	32155	87%	**67	100%
[Vihtavuori N110]*	<<locked>>	96%	30342	82%	**60	86%
Vihtavuori N32C Tin Star	<<locked>>	84%	33127	90%	**65	100%
Vihtavuori N340	<<locked>>	65%	33185	90%	**16	100%
Vihtavuori N350	<<locked>>	68%	32053	87%	**65	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	19131	52%	**48	95%
ADI APS 450	<<locked>>	61%	30327	82%	**19	100%
ADI AS 30	<<locked>>	61%	30589	83%	**61	100%
[Accurate 4100]*	<<locked>>	76%	26861	73%	**65	80%
[Accurate No. 9]*	<<locked>>	61%	23554	64%	**86	84%
Accurate Solo 1000	<<locked>>	60%	30937	84%	**91	100%
Accurate Solo 1250	<<locked>>	61%	28660	78%	**17	100%
[Accurate TCM]*	<<locked>>	61%	24221	65%	**99	86%
[Alliant 2400]*	<<locked>>	68%	23032	62%	**86	80%
[Alliant BLUE DOT]*	<<locked>>	61%	17912	48%	**42	83%
Alliant POWER PISTOL	<<locked>>	61%	29037	79%	**81	99%
Alliant UNIQUE	<<locked>>	61%	28776	78%	**80	100%
Baschieri & Pellagri 100	<<locked>>	61%	31111	84%	**98	100%
[Hodgdon LilGun]*	<<locked>>	81%	23322	63%	**58	80%
Hodgdon TrailBoss	<<locked>>	61%	9500	26%	**4	100%
[Lovex D037.2]*	<<locked>>	61%	24192	65%	**93	84%
Maxam CSB 1	<<locked>>	61%	26455	72%	**75	100%
Maxam CSB 2	<<locked>>	61%	29617	80%	**17	100%
Maxam CSB 3	<<locked>>	62%	30124	81%	**07	100%
Maxam CSB 4	<<locked>>	60%	30951	84%	**01	100%
[Ramshot Enforcer]*	<<locked>>	69%	22466	61%	**80	81%
ReloadSwiss RS 14	<<locked>>	62%	8920	24%	**8	100%
ReloadSwiss RS 20	<<locked>>	61%	27673	75%	**53	100%
ReloadSwiss RS 24	<<locked>>	61%	26643	72%	**42	94%
Rottweil P 806	<<locked>>	61%	23424	63%	**83	100%
SNPE Vectan A0	<<locked>>	61%	27006	73%	**17	100%
[SNPE Vectan BA6 1/2]*	<<locked>>	90%	20146	54%	**27	81%
SNPE Vectan BA7 1/2	<<locked>>	61%	23032	62%	**07	100%
SNPE Vectan BA9 1/2	<<locked>>	61%	30951	84%	**57	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	24192	65%	**93	84%
Somchem MS200	<<locked>>	61%	29863	81%	**76	100%
Vihtavuori 3N37	<<locked>>	61%	27702	75%	**02	100%
Vihtavuori 3N38	<<locked>>	61%	19682	53%	**75	90%
Vihtavuori N105	<<locked>>	61%	15751	43%	**22	90%
[Vihtavuori N110]*	<<locked>>	88%	23772	64%	**32	81%
Vihtavuori N32C Tin Star	<<locked>>	61%	19116	52%	**8	100%
Vihtavuori N340	<<locked>>	61%	29472	80%	**70	100%
Vihtavuori N350	<<locked>>	61%	25498	69%	**57	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