Load data for .357 Maximum + .357 | 125gr | Sierra JSP FN

Recommended Powder(s): Alliant POWER PISTOL, Rottweil P 806

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 125gr \| Sierra JSP FN
Manufacturer SKU:	8310
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.357" \| 9.07mm
Bullet Length:	0.532" \| 13.5mm
Caliber:	.357 Maximum load data
Case Length (l3):	1.600" \| 40.6mm
Cartridge Length (C.O.L.):	1.960" \| 49.8mm
Seated Depth:	0.172" \| 4.4mm
Shank Seated Depth:	0.172" \| 4.4mm
Case Capacity:	33.6 Grains of Water \| 2.18 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44962 psi \| 3100 bar
LID:	LID_B5945_C515
Last updated:	2025-01-01

Load data for 106 loads in caliber .357 Maximum with .357 | 125gr | Sierra JSP FN bullet and 53 powders such as Alliant POWER PISTOL, Rottweil P 806. 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>>	86%	39450	88%	**60	100%
ADI APS 350	<<locked>>	71%	39175	87%	**58	100%
ADI APS 450	<<locked>>	72%	39900	89%	**01	100%
ADI AS 30	<<locked>>	72%	39871	89%	**30	100%
ADI AS 50N	<<locked>>	67%	39059	87%	**70	100%
[Accurate 4100]*	<<locked>>	86%	39421	88%	**86	83%
Accurate No. 2	<<locked>>	66%	38566	86%	**55	100%
Accurate No. 7	<<locked>>	66%	39537	88%	**99	95%
Accurate No. 9	<<locked>>	74%	39320	87%	**99	90%
Accurate Solo 1000	<<locked>>	71%	40364	90%	**73	100%
Accurate Solo 1250	<<locked>>	73%	39276	87%	**12	100%
Accurate TCM	<<locked>>	74%	39566	88%	**99	91%
[Alliant 2400]*	<<locked>>	84%	39798	89%	**13	87%
Alliant BLUE DOT	<<locked>>	86%	39726	88%	**16	94%
Alliant BULLSEYE	<<locked>>	65%	40277	90%	**04	100%
Alliant POWER PISTOL 👍	<<locked>>	71%	40350	90%	**16	100%
Alliant UNIQUE	<<locked>>	72%	39378	88%	**85	100%
Baschieri & Pellagri 100	<<locked>>	71%	40059	89%	**73	100%
Hodgdon Clays	<<locked>>	71%	40103	89%	**81	100%
[Hodgdon LilGun]*	<<locked>>	94%	39871	89%	**78	87%
Hodgdon Universal	<<locked>>	68%	40277	90%	**39	100%
Hodgdon TrailBoss	<<locked>>	95%	20189	45%	**19	100%
Lovex D037.1	<<locked>>	66%	39537	88%	**99	95%
Lovex D037.2	<<locked>>	74%	39943	89%	**03	90%
Lovex S020	<<locked>>	66%	39929	89%	**49	100%
Maxam CSB 1	<<locked>>	76%	39711	88%	**19	100%
Maxam CSB 2	<<locked>>	72%	40466	90%	**16	100%
Maxam CSB 3	<<locked>>	73%	39929	89%	**86	100%
Maxam CSB 4	<<locked>>	71%	40335	90%	**76	100%
Maxam CSB 5	<<locked>>	67%	39943	89%	**21	100%
[Ramshot Enforcer]*	<<locked>>	83%	39146	87%	**26	88%
ReloadSwiss RS 12	<<locked>>	62%	39726	88%	**80	100%
ReloadSwiss RS 14	<<locked>>	95%	18971	42%	**32	100%
ReloadSwiss RS 20	<<locked>>	73%	40364	90%	**78	100%
ReloadSwiss RS 24	<<locked>>	73%	39726	88%	**06	97%
Rottweil P 806 👍	<<locked>>	75%	39784	88%	**80	100%
SNPE Vectan A0	<<locked>>	75%	39117	87%	**42	100%
SNPE Vectan BA 9	<<locked>>	69%	39827	89%	**16	100%
SNPE Vectan BA10	<<locked>>	67%	39885	89%	**01	100%
SNPE Vectan BA7 1/2	<<locked>>	80%	39871	89%	**24	100%
SNPE Vectan BA9 1/2	<<locked>>	70%	39929	89%	**26	100%
Shooters World Heavy Pistol	<<locked>>	74%	39943	89%	**03	90%
Shooters World Major Pistol	<<locked>>	66%	39537	88%	**99	95%
Somchem MP200	<<locked>>	67%	39827	89%	**85	100%
Somchem MS200	<<locked>>	72%	40263	90%	**72	100%
Vihtavuori 3N37	<<locked>>	73%	40103	89%	**27	100%
Vihtavuori 3N38	<<locked>>	82%	39363	88%	**83	97%
Vihtavuori N105	<<locked>>	87%	39726	88%	**13	99%
Vihtavuori N320	<<locked>>	67%	39856	89%	**67	100%
Vihtavuori N32C Tin Star	<<locked>>	93%	40103	89%	**88	100%
Vihtavuori N330	<<locked>>	67%	38711	86%	**12	100%
Vihtavuori N340	<<locked>>	72%	40045	89%	**65	100%
Vihtavuori N350	<<locked>>	75%	39813	89%	**34	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	19986	44%	**66	92%
ADI APS 350	<<locked>>	61%	31734	71%	**53	100%
ADI APS 450	<<locked>>	61%	31038	69%	**76	100%
ADI AS 30	<<locked>>	61%	30705	68%	**12	100%
ADI AS 50N	<<locked>>	61%	33692	75%	**94	100%
[Accurate 4100]*	<<locked>>	82%	33765	75%	**08	80%
Accurate No. 2	<<locked>>	61%	32793	73%	**70	100%
Accurate No. 7	<<locked>>	61%	32416	72%	**85	92%
[Accurate No. 9]*	<<locked>>	62%	25382	56%	**27	81%
Accurate Solo 1000	<<locked>>	61%	31256	70%	**39	100%
Accurate Solo 1250	<<locked>>	61%	28761	64%	**62	100%
[Accurate TCM]*	<<locked>>	61%	24685	55%	**11	82%
[Alliant 2400]*	<<locked>>	74%	29124	65%	**22	80%
[Alliant BLUE DOT]*	<<locked>>	63%	19653	44%	**76	80%
Alliant BULLSEYE	<<locked>>	61%	36608	81%	**42	100%
Alliant POWER PISTOL	<<locked>>	61%	29530	66%	**26	97%
Alliant UNIQUE	<<locked>>	61%	29501	66%	**40	100%
Baschieri & Pellagri 100	<<locked>>	61%	31067	69%	**45	100%
Hodgdon Clays	<<locked>>	61%	32430	72%	**80	100%
[Hodgdon LilGun]*	<<locked>>	86%	29791	66%	**98	80%
Hodgdon Universal	<<locked>>	61%	33243	74%	**34	100%
Hodgdon TrailBoss	<<locked>>	61%	10414	23%	**6	100%
Lovex D037.1	<<locked>>	61%	32416	72%	**85	92%
[Lovex D037.2]*	<<locked>>	61%	24903	55%	**14	80%
Lovex S020	<<locked>>	61%	34243	76%	**80	100%
Maxam CSB 1	<<locked>>	61%	26731	59%	**25	100%
Maxam CSB 2	<<locked>>	61%	29936	67%	**62	100%
Maxam CSB 3	<<locked>>	61%	29457	66%	**45	100%
Maxam CSB 4	<<locked>>	61%	31357	70%	**52	100%
Maxam CSB 5	<<locked>>	61%	34200	76%	**42	100%
[Ramshot Enforcer]*	<<locked>>	74%	28558	64%	**09	81%
ReloadSwiss RS 12	<<locked>>	61%	37956	84%	**67	100%
ReloadSwiss RS 14	<<locked>>	62%	9979	22%	**9	100%
ReloadSwiss RS 20	<<locked>>	61%	28703	64%	**21	100%
ReloadSwiss RS 24	<<locked>>	61%	27238	61%	**73	91%
Rottweil P 806	<<locked>>	61%	24613	55%	**14	98%
SNPE Vectan A0	<<locked>>	61%	26643	59%	**58	100%
SNPE Vectan BA 9	<<locked>>	61%	31792	71%	**11	100%
SNPE Vectan BA10	<<locked>>	61%	34418	77%	**25	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	23612	53%	**42	99%
SNPE Vectan BA9 1/2	<<locked>>	61%	31430	70%	**07	100%
[Shooters World Heavy Pistol]*	<<locked>>	61%	24903	55%	**14	80%
Shooters World Major Pistol	<<locked>>	61%	32416	72%	**85	92%
Somchem MP200	<<locked>>	61%	33286	74%	**93	100%
Somchem MS200	<<locked>>	61%	30327	67%	**21	100%
Vihtavuori 3N37	<<locked>>	61%	27934	62%	**40	100%
[Vihtavuori 3N38]*	<<locked>>	61%	20494	46%	**99	87%
[Vihtavuori N105]*	<<locked>>	61%	16302	36%	**17	85%
Vihtavuori N320	<<locked>>	61%	34011	76%	**94	100%
Vihtavuori N32C Tin Star	<<locked>>	61%	19914	44%	**96	100%
Vihtavuori N330	<<locked>>	61%	33199	74%	**30	100%
Vihtavuori N340	<<locked>>	61%	29718	66%	**21	100%
Vihtavuori N350	<<locked>>	61%	25904	58%	**98	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