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

Recommended Powder(s): SNPE Vectan BA7 1/2, Somchem S221, Vihtavuori 3N37, Vihtavuori N105, Vihtavuori N350

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 Magnum load data
Case Length (l3):	1.290" \| 32.8mm
Cartridge Length (C.O.L.):	1.566" \| 39.8mm
Seated Depth:	0.366" \| 9.3mm
Shank Seated Depth:	0.346" \| 8.8mm
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_B7479_C513
Last updated:	2025-02-02

Load data for 124 loads in caliber .357 Magnum with .357 | 158gr | H&N KS KB bullet and 62 powders such as SNPE Vectan BA7 1/2, Somchem S221, Vihtavuori 3N37, Vihtavuori N105, Vihtavuori N350. 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%	38232	88%	**55	100%
ADI AP 70N	<<locked>>	70%	40640	93%	**57	100%
ADI AS 30	<<locked>>	80%	40451	93%	**58	100%
ADI AS 50N	<<locked>>	78%	42279	97%	**24	100%
Accurate No. 2	<<locked>>	76%	41031	94%	**86	100%
Accurate No. 5	<<locked>>	63%	41176	95%	**91	100%
Accurate No. 7	<<locked>>	78%	41379	95%	**50	95%
Accurate No. 9	<<locked>>	88%	43294	99%	**63	91%
Accurate Solo 1000	<<locked>>	78%	40234	92%	**84	100%
Accurate Solo 1250	<<locked>>	85%	42134	97%	**53	100%
Accurate TCM	<<locked>>	86%	41089	94%	**37	91%
[Alliant 2400]*	<<locked>>	97%	39842	92%	**47	87%
Alliant BLUE DOT	<<locked>>	96%	35810	82%	**71	92%
Alliant BULLSEYE	<<locked>>	73%	40886	94%	**19	100%
Alliant POWER PISTOL	<<locked>>	84%	43149	99%	**60	100%
Alliant UNIQUE	<<locked>>	83%	40335	93%	**22	100%
Baschieri & Pellagri 100	<<locked>>	81%	42525	98%	**11	100%
Hodgdon Clays	<<locked>>	78%	41872	96%	**15	100%
Hodgdon HS-6	<<locked>>	70%	43352	100%	**81	100%
Hodgdon Longshot	<<locked>>	65%	41655	96%	**65	100%
Hodgdon Universal	<<locked>>	77%	40640	93%	**57	100%
Hodgdon TrailBoss	<<locked>>	96%	15534	36%	**6	100%
Lovex D036	<<locked>>	63%	41104	94%	**88	100%
Lovex D037.1	<<locked>>	78%	41379	95%	**50	95%
Lovex D037.2	<<locked>>	86%	41959	96%	**47	90%
Lovex S011	<<locked>>	70%	43091	99%	**37	100%
Lovex S020	<<locked>>	76%	41263	95%	**76	100%
Maxam CSB 1	<<locked>>	89%	42641	98%	**57	100%
Maxam CSB 2	<<locked>>	85%	42525	98%	**57	100%
Maxam CSB 3	<<locked>>	83%	41394	95%	**24	100%
Maxam CSB 4	<<locked>>	79%	40321	93%	**98	100%
Maxam CSB 5	<<locked>>	76%	41829	96%	**61	100%
[Ramshot Enforcer]*	<<locked>>	97%	39291	90%	**44	87%
Ramshot Silhouette	<<locked>>	70%	42496	98%	**35	100%
Ramshot True Blue	<<locked>>	65%	42308	97%	**58	100%
ReloadSwiss RS 12	<<locked>>	72%	40973	94%	**34	100%
ReloadSwiss RS 14	<<locked>>	91%	12720	29%	**0	100%
ReloadSwiss RS 20	<<locked>>	84%	41350	95%	**16	100%
ReloadSwiss RS 24	<<locked>>	86%	42598	98%	**53	97%
Rottweil P 801	<<locked>>	69%	42018	97%	**07	100%
Rottweil P 806	<<locked>>	89%	40712	94%	**40	100%
SNPE Vectan A0	<<locked>>	87%	41437	95%	**86	100%
SNPE Vectan BA 9	<<locked>>	79%	41350	95%	**53	100%
SNPE Vectan BA10	<<locked>>	76%	42656	98%	**42	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	91%	40901	94%	**39	100%
SNPE Vectan BA9 1/2	<<locked>>	80%	41060	94%	**57	100%
Shooters World Auto Pistol	<<locked>>	63%	41104	94%	**88	100%
Shooters World Heavy Pistol	<<locked>>	86%	41959	96%	**47	90%
Shooters World Major Pistol	<<locked>>	78%	41379	95%	**50	95%
Somchem MP200	<<locked>>	77%	41075	94%	**12	100%
Somchem MS200	<<locked>>	82%	41307	95%	**93	100%
Somchem S221 👍	<<locked>>	73%	42772	98%	**27	99%
Vihtavuori 3N37 👍	<<locked>>	85%	42772	98%	**75	100%
Vihtavuori 3N38	<<locked>>	96%	40814	94%	**14	97%
Vihtavuori N105 👍	<<locked>>	97%	34171	79%	**81	99%
Vihtavuori N310	<<locked>>	64%	40321	93%	**19	100%
Vihtavuori N320	<<locked>>	78%	42018	97%	**17	100%
Vihtavuori N32C Tin Star	<<locked>>	93%	32692	75%	**56	100%
Vihtavuori N330	<<locked>>	79%	42409	97%	**70	100%
Vihtavuori N340	<<locked>>	82%	41698	96%	**99	100%
Vihtavuori N350 👍	<<locked>>	89%	43381	100%	**75	100%
Winchester 231	<<locked>>	67%	41321	95%	**43	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	62%	14402	33%	**5	87%
ADI AP 70N	<<locked>>	61%	31560	73%	**65	100%
ADI AS 30	<<locked>>	61%	25222	58%	**1	100%
ADI AS 50N	<<locked>>	61%	27093	62%	**53	100%
Accurate No. 2	<<locked>>	61%	25092	58%	**99	100%
Accurate No. 5	<<locked>>	61%	38377	88%	**52	100%
[Accurate No. 7]*	<<locked>>	61%	21451	49%	**45	85%
[Accurate No. 9]*	<<locked>>	72%	24903	57%	**01	81%
Accurate Solo 1000	<<locked>>	60%	25425	58%	**17	100%
Accurate Solo 1250	<<locked>>	61%	21973	51%	**20	100%
[Accurate TCM]*	<<locked>>	71%	23554	54%	**68	81%
[Alliant 2400]*	<<locked>>	88%	30269	70%	**12	82%
[Alliant BLUE DOT]*	<<locked>>	73%	18869	43%	**66	80%
Alliant BULLSEYE	<<locked>>	61%	28863	66%	**75	100%
Alliant POWER PISTOL	<<locked>>	61%	21480	49%	**29	93%
Alliant UNIQUE	<<locked>>	61%	22060	51%	**79	100%
Baschieri & Pellagri 100	<<locked>>	61%	24569	56%	**14	100%
Hodgdon Clays	<<locked>>	61%	28616	66%	**4	100%
Hodgdon HS-6	<<locked>>	61%	32634	75%	**63	100%
Hodgdon Longshot	<<locked>>	61%	36129	83%	**02	100%
Hodgdon Universal	<<locked>>	61%	26295	60%	**93	100%
Hodgdon TrailBoss	<<locked>>	66%	8137	19%	**3	100%
Lovex D036	<<locked>>	61%	38319	88%	**52	100%
[Lovex D037.1]*	<<locked>>	61%	21451	49%	**45	85%
[Lovex D037.2]*	<<locked>>	73%	25788	59%	**14	82%
Lovex S011	<<locked>>	61%	33098	76%	**42	100%
Lovex S020	<<locked>>	61%	26165	60%	**12	100%
Maxam CSB 1	<<locked>>	61%	21031	48%	**01	100%
Maxam CSB 2	<<locked>>	61%	22481	52%	**30	100%
Maxam CSB 3	<<locked>>	61%	24033	55%	**24	100%
Maxam CSB 4	<<locked>>	61%	25541	59%	**27	100%
Maxam CSB 5	<<locked>>	61%	28921	66%	**27	100%
[Ramshot Enforcer]*	<<locked>>	87%	27644	64%	**76	81%
Ramshot Silhouette	<<locked>>	60%	31357	72%	**17	100%
Ramshot True Blue	<<locked>>	61%	36637	84%	**02	100%
ReloadSwiss RS 12	<<locked>>	60%	28877	66%	**99	100%
ReloadSwiss RS 14	<<locked>>	68%	7658	18%	**9	100%
ReloadSwiss RS 20	<<locked>>	60%	20146	46%	**50	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	18840	43%	**66	84%
Rottweil P 801	<<locked>>	61%	32779	75%	**19	100%
Rottweil P 806	<<locked>>	61%	14243	33%	**04	92%
SNPE Vectan A0	<<locked>>	62%	21161	49%	**27	100%
SNPE Vectan BA 9	<<locked>>	61%	25338	58%	**70	100%
SNPE Vectan BA10	<<locked>>	61%	30197	69%	**10	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	17289	40%	**1	96%
SNPE Vectan BA9 1/2	<<locked>>	61%	24555	56%	**66	100%
Shooters World Auto Pistol	<<locked>>	61%	38319	88%	**52	100%
[Shooters World Heavy Pistol]*	<<locked>>	73%	25788	59%	**14	82%
[Shooters World Major Pistol]*	<<locked>>	61%	21451	49%	**45	85%
Somchem MP200	<<locked>>	60%	25135	58%	**19	100%
Somchem MS200	<<locked>>	60%	22756	52%	**60	100%
Somchem S221	<<locked>>	61%	28152	65%	**30	95%
Vihtavuori 3N37	<<locked>>	62%	20610	47%	**76	98%
[Vihtavuori 3N38]*	<<locked>>	63%	14779	34%	**5	81%
[Vihtavuori N105]*	<<locked>>	66%	12212	28%	**5	80%
Vihtavuori N310	<<locked>>	61%	36854	85%	**86	100%
Vihtavuori N320	<<locked>>	60%	25962	60%	**43	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	14924	34%	**3	100%
Vihtavuori N330	<<locked>>	60%	24308	56%	**70	100%
Vihtavuori N340	<<locked>>	61%	22263	51%	**60	100%
Vihtavuori N350	<<locked>>	61%	18550	43%	**30	98%
Winchester 231	<<locked>>	61%	35244	81%	**81	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