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

Recommended Powder(s):

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 SIG load data
Case Length (l3):	0.860" \| 21.8mm
Cartridge Length (C.O.L.):	1.123" \| 28.5mm
Seated Depth:	0.269" \| 6.8mm
Shank Seated Depth:	0.269" \| 6.8mm
Case Capacity:	19.5 Grains of Water \| 1.27 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	44237 psi \| 3050 bar
LID:	LID_B5945_C518
Last updated:	2026-01-20

Load data for 124 loads in caliber .357 SIG with .357 | 125gr | Sierra JSP FN bullet and 62 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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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>>	96%	27093	61%	**89	91%
ADI AP 70N	<<locked>>	79%	39436	89%	**81	100%
ADI APS 350	<<locked>>	83%	38537	87%	**68	100%
ADI APS 450	<<locked>>	86%	39523	89%	**14	100%
ADI AS 30	<<locked>>	88%	38783	88%	**60	100%
ADI AS 50N	<<locked>>	85%	39537	89%	**12	100%
Accurate No. 2	<<locked>>	84%	38957	88%	**75	100%
Accurate No. 5	<<locked>>	71%	39610	90%	**86	98%
[Accurate No. 7]*	<<locked>>	89%	38769	88%	**19	87%
Accurate Solo 1000	<<locked>>	87%	38943	88%	**89	100%
Accurate Solo 1250	<<locked>>	94%	39392	89%	**58	100%
Alliant BULLSEYE	<<locked>>	82%	39102	88%	**27	100%
Alliant POWER PISTOL	<<locked>>	94%	39421	89%	**35	96%
Alliant Sport Pistol	<<locked>>	77%	39044	88%	**27	100%
Alliant UNIQUE 👍	<<locked>>	94%	38566	87%	**37	100%
Baschieri & Pellagri 100	<<locked>>	88%	39030	88%	**93	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	97%	29240	66%	**04	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	83%	39552	89%	**25	100%
Hodgdon Clays	<<locked>>	83%	39247	89%	**84	100%
Hodgdon HP38	<<locked>>	66%	39668	90%	**45	100%
Hodgdon HS-6	<<locked>>	77%	39146	88%	**57	99%
Hodgdon Longshot	<<locked>>	73%	39088	88%	**60	100%
Hodgdon Universal	<<locked>>	87%	39436	89%	**81	100%
Hodgdon CFE Pistol	<<locked>>	89%	39566	89%	**75	100%
Lovex D036	<<locked>>	71%	39566	89%	**86	98%
[Lovex D037.1]*	<<locked>>	89%	38769	88%	**19	87%
Lovex S011	<<locked>>	76%	39276	89%	**25	100%
Lovex S020	<<locked>>	85%	39726	90%	**98	100%
Maxam CSB 1	<<locked>>	97%	38551	87%	**48	100%
Maxam CSB 2	<<locked>>	94%	39001	88%	**62	100%
Maxam CSB 3	<<locked>>	92%	39175	89%	**25	100%
Maxam CSB 4	<<locked>>	87%	38740	88%	**02	100%
Maxam CSB 5	<<locked>>	82%	38885	88%	**47	100%
Ramshot Silhouette	<<locked>>	77%	39102	88%	**34	100%
Ramshot True Blue	<<locked>>	72%	39088	88%	**53	100%
Ramshot Zip	<<locked>>	66%	39247	89%	**45	100%
ReloadSwiss RS 12	<<locked>>	82%	39160	89%	**45	100%
ReloadSwiss RS 20 👍	<<locked>>	96%	39160	89%	**37	100%
ReloadSwiss RS 24	<<locked>>	96%	39189	89%	**16	90%
Rottweil P 801	<<locked>>	76%	39131	88%	**12	100%
Rottweil P 806	<<locked>>	97%	31488	71%	**76	98%
SNPE Vectan A0 👍	<<locked>>	97%	38986	88%	**81	100%
SNPE Vectan BA 9	<<locked>>	87%	39378	89%	**58	100%
SNPE Vectan BA10	<<locked>>	80%	39523	89%	**14	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	34505	78%	**81	99%
SNPE Vectan BA9 1/2	<<locked>>	89%	38827	88%	**65	100%
SNPE Vectan SP 2	<<locked>>	90%	39146	88%	**45	97%
Shooters World Auto Pistol	<<locked>>	71%	39566	89%	**86	98%
[Shooters World Major Pistol]*	<<locked>>	89%	38769	88%	**19	87%
Somchem MP200	<<locked>>	87%	39421	89%	**30	100%
Somchem MS200 👍	<<locked>>	92%	39305	89%	**98	100%
Somchem S221	<<locked>>	81%	39160	89%	**90	93%
Vihtavuori 3N37	<<locked>>	95%	39001	88%	**67	100%
[Vihtavuori 3N38]*	<<locked>>	97%	28181	64%	**39	85%
[Vihtavuori N105]*	<<locked>>	97%	21306	48%	**57	84%
Vihtavuori N310	<<locked>>	71%	39668	90%	**20	100%
Vihtavuori N320	<<locked>>	85%	39218	89%	**12	100%
Vihtavuori N32C Tin Star	<<locked>>	96%	27108	61%	**02	100%
Vihtavuori N330	<<locked>>	88%	39146	88%	**78	100%
Vihtavuori N340 👍	<<locked>>	92%	39769	90%	**11	100%
Vihtavuori N350	<<locked>>	97%	37420	85%	**40	100%
Winchester 231	<<locked>>	74%	39247	89%	**45	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	73%	14881	34%	**17	80%
ADI AP 70N	<<locked>>	61%	24250	55%	**81	100%
ADI APS 350	<<locked>>	61%	23540	53%	**4	100%
ADI APS 450	<<locked>>	61%	22089	50%	**7	100%
ADI AS 30	<<locked>>	61%	20900	47%	**20	100%
ADI AS 50N	<<locked>>	61%	21930	50%	**79	100%
Accurate No. 2	<<locked>>	62%	19290	44%	**83	96%
Accurate No. 5	<<locked>>	61%	28369	64%	**12	94%
[Accurate No. 7]*	<<locked>>	78%	26368	60%	**29	80%
Accurate Solo 1000	<<locked>>	62%	21190	48%	**53	100%
Accurate Solo 1250	<<locked>>	62%	17158	39%	**27	100%
Alliant BULLSEYE	<<locked>>	62%	22481	51%	**75	100%
[Alliant POWER PISTOL]*	<<locked>>	62%	16099	36%	**83	81%
Alliant Sport Pistol	<<locked>>	61%	24526	55%	**17	100%
Alliant UNIQUE	<<locked>>	61%	16723	38%	**60	97%
Baschieri & Pellagri 100	<<locked>>	62%	19450	44%	**33	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	64%	12763	29%	**9	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	61%	19812	45%	**76	100%
Hodgdon Clays	<<locked>>	61%	23743	54%	**7	100%
Hodgdon HP38	<<locked>>	61%	34243	77%	**83	100%
Hodgdon HS-6	<<locked>>	61%	23380	53%	**11	93%
Hodgdon Longshot	<<locked>>	62%	26252	59%	**66	96%
Hodgdon Universal	<<locked>>	62%	20349	46%	**09	100%
Hodgdon CFE Pistol	<<locked>>	61%	18420	42%	**70	100%
Lovex D036	<<locked>>	61%	28326	64%	**12	94%
[Lovex D037.1]*	<<locked>>	78%	26368	60%	**29	80%
Lovex S011	<<locked>>	60%	25092	57%	**42	100%
Lovex S020	<<locked>>	61%	18898	43%	**93	99%
Maxam CSB 1	<<locked>>	60%	15374	35%	**4	100%
Maxam CSB 2	<<locked>>	61%	16114	36%	**30	100%
Maxam CSB 3	<<locked>>	62%	18797	42%	**43	100%
Maxam CSB 4	<<locked>>	61%	19972	45%	**43	100%
Maxam CSB 5	<<locked>>	61%	22597	51%	**47	100%
Ramshot Silhouette	<<locked>>	61%	23090	52%	**94	98%
Ramshot True Blue	<<locked>>	61%	26890	61%	**73	97%
Ramshot Zip	<<locked>>	61%	33011	75%	**76	100%
ReloadSwiss RS 12	<<locked>>	61%	21756	49%	**25	100%
ReloadSwiss RS 20	<<locked>>	61%	14634	33%	**27	97%
[ReloadSwiss RS 24]*	<<locked>>	78%	22771	51%	**40	80%
Rottweil P 801	<<locked>>	60%	25135	57%	**35	100%
[Rottweil P 806]*	<<locked>>	66%	11168	25%	**04	80%
SNPE Vectan A0	<<locked>>	62%	16288	37%	**07	96%
SNPE Vectan BA 9	<<locked>>	61%	19319	44%	**70	100%
SNPE Vectan BA10	<<locked>>	61%	25237	57%	**43	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	61%	13213	30%	**1	85%
SNPE Vectan BA9 1/2	<<locked>>	61%	18855	43%	**66	100%
[SNPE Vectan SP 2]*	<<locked>>	62%	16085	36%	**09	83%
Shooters World Auto Pistol	<<locked>>	61%	28326	64%	**12	94%
[Shooters World Major Pistol]*	<<locked>>	78%	26368	60%	**29	80%
Somchem MP200	<<locked>>	61%	19174	43%	**06	97%
Somchem MS200	<<locked>>	61%	17564	40%	**56	98%
[Somchem S221]*	<<locked>>	61%	19943	45%	**58	82%
[Vihtavuori 3N37]*	<<locked>>	61%	14852	34%	**27	88%
[Vihtavuori 3N38]*	<<locked>>	88%	21915	50%	**17	81%
[Vihtavuori N105]*	<<locked>>	92%	18579	42%	**84	80%
Vihtavuori N310	<<locked>>	61%	30066	68%	**19	100%
Vihtavuori N320	<<locked>>	61%	19812	45%	**60	100%
Vihtavuori N32C Tin Star	<<locked>>	71%	15505	35%	**2	100%
Vihtavuori N330	<<locked>>	61%	17637	40%	**73	100%
Vihtavuori N340	<<locked>>	62%	16969	38%	**50	97%
[Vihtavuori N350]*	<<locked>>	62%	13561	31%	**4	87%
Winchester 231	<<locked>>	61%	26614	60%	**88	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