Load data for .357 Maximum + .357 | 127gr | H&N KS HP HS

Recommended Powder(s): Alliant POWER PISTOL, Rottweil P 806, SNPE Vectan BA7 1/2, Somchem S221, Vihtavuori N105

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 127gr \| H&N KS HP HS
Bullet Weight:	127gr \| 8.2g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.587" \| 14.9mm
Caliber:	.357 Maximum load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	1.960" \| 49.8mm
Seated Depth:	0.227" \| 5.8mm
Shank Seated Depth:	0.227" \| 5.8mm
Case Capacity:	33.6 Grains of Water \| 2.18 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B7468_C515
Last updated:	2025-01-01

Load data for 110 loads in caliber .357 Maximum with .357 | 127gr | H&N KS HP HS bullet and 55 powders such as Alliant POWER PISTOL, Rottweil P 806, SNPE Vectan BA7 1/2, Somchem S221, Vihtavuori N105. 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>>	89%	39871	89%	**54	100%
ADI AP 70N	<<locked>>	62%	39595	88%	**12	100%
ADI APS 350	<<locked>>	72%	39131	87%	**39	100%
ADI APS 450	<<locked>>	73%	39044	87%	**65	100%
ADI AS 30	<<locked>>	72%	38435	85%	**01	100%
ADI AS 50N	<<locked>>	69%	39624	88%	**70	100%
[Accurate 4100]*	<<locked>>	89%	39392	88%	**96	84%
Accurate No. 2	<<locked>>	68%	38624	86%	**35	100%
Accurate No. 7	<<locked>>	68%	38986	87%	**77	94%
Accurate No. 9	<<locked>>	76%	38957	87%	**86	90%
Accurate Solo 1000	<<locked>>	72%	39349	88%	**37	100%
Accurate Solo 1250	<<locked>>	75%	40118	89%	**03	100%
Accurate TCM	<<locked>>	76%	39479	88%	**90	91%
[Alliant 2400]*	<<locked>>	86%	39305	87%	**03	87%
Alliant BLUE DOT	<<locked>>	89%	39885	89%	**99	94%
Alliant BULLSEYE	<<locked>>	66%	40190	89%	**78	100%
Alliant POWER PISTOL 👍	<<locked>>	72%	38638	86%	**83	100%
Alliant UNIQUE	<<locked>>	74%	38827	86%	**78	100%
Baschieri & Pellagri 100	<<locked>>	71%	38986	87%	**37	100%
Hodgdon Clays	<<locked>>	72%	39929	89%	**65	100%
[Hodgdon LilGun]*	<<locked>>	96%	38247	85%	**32	86%
Hodgdon Universal	<<locked>>	68%	38638	86%	**99	100%
Hodgdon TrailBoss	<<locked>>	96%	18985	42%	**89	100%
Lovex D037.1	<<locked>>	68%	38986	87%	**77	94%
Lovex D037.2	<<locked>>	76%	39798	89%	**96	90%
Lovex S020	<<locked>>	66%	38522	86%	**26	100%
Maxam CSB 1	<<locked>>	77%	38653	86%	**86	100%
Maxam CSB 2	<<locked>>	73%	38711	86%	**76	100%
Maxam CSB 3	<<locked>>	74%	39769	88%	**76	100%
Maxam CSB 4	<<locked>>	71%	39233	87%	**53	100%
Maxam CSB 5	<<locked>>	67%	38537	86%	**91	100%
[Ramshot Enforcer]*	<<locked>>	86%	38986	87%	**06	88%
ReloadSwiss RS 12	<<locked>>	65%	39827	89%	**80	100%
ReloadSwiss RS 14	<<locked>>	96%	17376	39%	**93	100%
ReloadSwiss RS 20	<<locked>>	75%	40205	89%	**75	100%
ReloadSwiss RS 24	<<locked>>	74%	39146	87%	**77	97%
Rottweil P 806 👍	<<locked>>	78%	40147	89%	**80	100%
SNPE Vectan A0	<<locked>>	78%	40103	89%	**45	100%
SNPE Vectan BA 9	<<locked>>	71%	40103	89%	**12	100%
SNPE Vectan BA10	<<locked>>	68%	39044	87%	**65	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	81%	39378	88%	**91	100%
SNPE Vectan BA9 1/2	<<locked>>	71%	38783	86%	**93	100%
Shooters World Heavy Pistol	<<locked>>	76%	39798	89%	**96	90%
Shooters World Major Pistol	<<locked>>	68%	38986	87%	**77	94%
Somchem MP200	<<locked>>	68%	38754	86%	**55	100%
Somchem MS200	<<locked>>	74%	40074	89%	**49	100%
Somchem S221 👍	<<locked>>	63%	39697	88%	**57	99%
Vihtavuori 3N37	<<locked>>	75%	40176	89%	**17	100%
Vihtavuori 3N38	<<locked>>	85%	39740	88%	**67	97%
Vihtavuori N105 👍	<<locked>>	90%	39552	88%	**19	100%
Vihtavuori N320	<<locked>>	70%	40393	90%	**67	100%
Vihtavuori N32C Tin Star	<<locked>>	95%	39943	89%	**81	100%
Vihtavuori N330	<<locked>>	70%	40263	90%	**16	100%
Vihtavuori N340	<<locked>>	73%	39987	89%	**62	100%
Vihtavuori N350	<<locked>>	78%	39987	89%	**24	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	18014	40%	**14	90%
ADI AP 70N	<<locked>>	61%	37681	84%	**83	100%
ADI APS 350	<<locked>>	62%	31227	69%	**37	100%
ADI APS 450	<<locked>>	61%	29878	66%	**40	100%
ADI AS 30	<<locked>>	60%	28906	64%	**66	100%
ADI AS 50N	<<locked>>	61%	31923	71%	**55	100%
[Accurate 4100]*	<<locked>>	86%	34940	78%	**04	80%
Accurate No. 2	<<locked>>	61%	30443	68%	**21	100%
Accurate No. 7	<<locked>>	61%	29907	67%	**19	90%
[Accurate No. 9]*	<<locked>>	65%	25411	57%	**14	80%
Accurate Solo 1000	<<locked>>	61%	29878	66%	**12	100%
Accurate Solo 1250	<<locked>>	61%	27108	60%	**22	100%
[Accurate TCM]*	<<locked>>	62%	23438	52%	**81	81%
[Alliant 2400]*	<<locked>>	77%	29399	65%	**16	80%
[Alliant BLUE DOT]*	<<locked>>	66%	19566	44%	**73	80%
Alliant BULLSEYE	<<locked>>	61%	34374	76%	**99	100%
Alliant POWER PISTOL	<<locked>>	61%	27586	61%	**67	96%
Alliant UNIQUE	<<locked>>	61%	26876	60%	**78	100%
Baschieri & Pellagri 100	<<locked>>	61%	29559	66%	**09	100%
Hodgdon Clays	<<locked>>	62%	31865	71%	**53	100%
[Hodgdon LilGun]*	<<locked>>	90%	30647	68%	**04	81%
Hodgdon Universal	<<locked>>	61%	31227	69%	**94	100%
Hodgdon TrailBoss	<<locked>>	61%	8789	20%	**0	100%
Lovex D037.1	<<locked>>	61%	29907	67%	**19	90%
[Lovex D037.2]*	<<locked>>	64%	25918	58%	**24	81%
Lovex S020	<<locked>>	61%	32634	73%	**34	100%
Maxam CSB 1	<<locked>>	61%	25005	56%	**83	100%
Maxam CSB 2	<<locked>>	61%	27905	62%	**29	100%
Maxam CSB 3	<<locked>>	62%	28747	64%	**22	100%
Maxam CSB 4	<<locked>>	61%	29820	66%	**12	100%
Maxam CSB 5	<<locked>>	61%	32634	73%	**16	100%
[Ramshot Enforcer]*	<<locked>>	78%	28718	64%	**06	81%
ReloadSwiss RS 12	<<locked>>	61%	35781	80%	**30	100%
ReloadSwiss RS 14	<<locked>>	61%	8195	18%	**7	100%
ReloadSwiss RS 20	<<locked>>	61%	26165	58%	**65	100%
[ReloadSwiss RS 24]*	<<locked>>	61%	24860	55%	**07	89%
Rottweil P 806	<<locked>>	61%	21524	48%	**29	97%
SNPE Vectan A0	<<locked>>	61%	25295	56%	**22	100%
SNPE Vectan BA 9	<<locked>>	61%	29820	66%	**71	100%
SNPE Vectan BA10	<<locked>>	61%	33388	74%	**93	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	22220	49%	**93	98%
SNPE Vectan BA9 1/2	<<locked>>	61%	29878	66%	**75	100%
[Shooters World Heavy Pistol]*	<<locked>>	64%	25918	58%	**24	81%
Shooters World Major Pistol	<<locked>>	61%	29907	67%	**19	90%
Somchem MP200	<<locked>>	61%	31778	71%	**53	100%
Somchem MS200	<<locked>>	61%	27949	62%	**68	100%
Somchem S221	<<locked>>	61%	36506	81%	**14	98%
Vihtavuori 3N37	<<locked>>	61%	25701	57%	**91	100%
[Vihtavuori 3N38]*	<<locked>>	61%	18391	41%	**37	84%
[Vihtavuori N105]*	<<locked>>	61%	14025	31%	**38	81%
Vihtavuori N320	<<locked>>	61%	32271	72%	**55	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	18478	41%	**60	100%
Vihtavuori N330	<<locked>>	61%	30589	68%	**81	100%
Vihtavuori N340	<<locked>>	61%	27296	61%	**68	100%
Vihtavuori N350	<<locked>>	61%	23844	53%	**48	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.

<<locked>>... you need to buy an access license to unlock the data