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

Recommended Powder(s): Rottweil P 806, SNPE Vectan BA7 1/2

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 Auto Magnum load data
Case Length (l3):	1.299" \| 33.0mm
Cartridge Length (C.O.L.):	1.576" \| 40.0mm
Seated Depth:	0.255" \| 6.5mm
Shank Seated Depth:	0.255" \| 6.5mm
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_B5945_C511
Last updated:	2025-01-01

Load data for 82 loads in caliber .357 Auto Magnum with .357 | 125gr | Sierra JSP FN bullet and 41 powders such as Rottweil P 806, SNPE Vectan BA7 1/2. 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>>	80%	32010	87%	**75	99%
ADI APS 350	<<locked>>	64%	33112	90%	**06	100%
ADI APS 450	<<locked>>	63%	31575	85%	**16	100%
ADI AS 30	<<locked>>	64%	32039	87%	**62	100%
Accurate No. 2	<<locked>>	63%	33141	90%	**12	100%
Accurate No. 7	<<locked>>	63%	33083	89%	**54	92%
[Accurate No. 9]*	<<locked>>	71%	33040	89%	**44	87%
Accurate Solo 1000	<<locked>>	63%	32532	88%	**98	100%
Accurate Solo 1250	<<locked>>	67%	32358	87%	**50	100%
[Accurate TCM]*	<<locked>>	70%	31981	86%	**27	88%
[Alliant 2400]*	<<locked>>	80%	32866	89%	**50	83%
Alliant BLUE DOT	<<locked>>	81%	32677	88%	**44	91%
Alliant POWER PISTOL	<<locked>>	66%	32619	88%	**34	98%
Alliant UNIQUE	<<locked>>	66%	32808	89%	**35	100%
Baschieri & Pellagri 100	<<locked>>	65%	33243	90%	**11	100%
[Hodgdon LilGun]*	<<locked>>	91%	32822	89%	**29	83%
Hodgdon TrailBoss	<<locked>>	96%	19754	53%	**42	100%
Lovex D037.1	<<locked>>	63%	33083	89%	**54	92%
[Lovex D037.2]*	<<locked>>	70%	33040	89%	**44	87%
Maxam CSB 1	<<locked>>	69%	32314	87%	**50	100%
Maxam CSB 2	<<locked>>	65%	31807	86%	**37	100%
Maxam CSB 3	<<locked>>	65%	32314	87%	**24	100%
Maxam CSB 4	<<locked>>	63%	32489	88%	**11	100%
[Ramshot Enforcer]*	<<locked>>	80%	32851	89%	**50	84%
ReloadSwiss RS 14	<<locked>>	96%	18565	50%	**55	100%
ReloadSwiss RS 20	<<locked>>	66%	31807	86%	**03	100%
ReloadSwiss RS 24	<<locked>>	69%	33098	89%	**34	94%
Rottweil P 806 👍	<<locked>>	72%	33185	90%	**34	100%
SNPE Vectan A0	<<locked>>	69%	31952	86%	**86	100%
SNPE Vectan BA 9	<<locked>>	63%	32068	87%	**60	100%
SNPE Vectan BA7 1/2 👍	<<locked>>	74%	32561	88%	**49	100%
SNPE Vectan BA9 1/2	<<locked>>	63%	31618	85%	**44	100%
[Shooters World Heavy Pistol]*	<<locked>>	70%	33040	89%	**44	87%
Shooters World Major Pistol	<<locked>>	63%	33083	89%	**54	92%
Somchem MS200	<<locked>>	65%	32082	87%	**90	100%
Vihtavuori 3N37	<<locked>>	67%	32256	87%	**68	100%
Vihtavuori 3N38	<<locked>>	77%	32111	87%	**17	95%
Vihtavuori N105	<<locked>>	83%	32735	89%	**73	98%
Vihtavuori N32C Tin Star	<<locked>>	85%	33127	90%	**35	100%
Vihtavuori N340	<<locked>>	66%	33112	90%	**19	100%
Vihtavuori N350	<<locked>>	69%	31778	86%	**49	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 100	<<locked>>	61%	18956	51%	**80	92%
ADI APS 350	<<locked>>	61%	31401	85%	**76	100%
ADI APS 450	<<locked>>	61%	29892	81%	**89	100%
ADI AS 30	<<locked>>	61%	30356	82%	**29	100%
Accurate No. 2	<<locked>>	61%	31270	85%	**93	100%
Accurate No. 7	<<locked>>	61%	30385	82%	**04	91%
[Accurate No. 9]*	<<locked>>	63%	24816	67%	**67	81%
Accurate Solo 1000	<<locked>>	61%	30908	84%	**68	100%
Accurate Solo 1250	<<locked>>	61%	27398	74%	**78	100%
[Accurate TCM]*	<<locked>>	61%	23061	62%	**21	81%
[Alliant 2400]*	<<locked>>	75%	28007	76%	**62	80%
[Alliant BLUE DOT]*	<<locked>>	64%	19508	53%	**16	80%
Alliant POWER PISTOL	<<locked>>	61%	28224	76%	**42	97%
Alliant UNIQUE	<<locked>>	61%	28152	76%	**60	100%
Baschieri & Pellagri 100	<<locked>>	61%	29878	81%	**62	100%
[Hodgdon LilGun]*	<<locked>>	88%	29167	79%	**44	80%
Hodgdon TrailBoss	<<locked>>	61%	9964	27%	**3	100%
Lovex D037.1	<<locked>>	61%	30385	82%	**04	91%
[Lovex D037.2]*	<<locked>>	62%	24816	67%	**67	81%
Maxam CSB 1	<<locked>>	61%	26078	71%	**42	100%
Maxam CSB 2	<<locked>>	61%	28645	77%	**78	100%
Maxam CSB 3	<<locked>>	61%	29051	79%	**75	100%
Maxam CSB 4	<<locked>>	61%	30821	83%	**81	100%
[Ramshot Enforcer]*	<<locked>>	75%	26760	72%	**39	80%
ReloadSwiss RS 14	<<locked>>	61%	9573	26%	**9	100%
ReloadSwiss RS 20	<<locked>>	61%	27224	74%	**27	100%
ReloadSwiss RS 24	<<locked>>	61%	25454	69%	**80	90%
Rottweil P 806	<<locked>>	61%	22814	62%	**24	98%
SNPE Vectan A0	<<locked>>	61%	26049	70%	**78	100%
SNPE Vectan BA 9	<<locked>>	61%	30560	83%	**34	100%
SNPE Vectan BA7 1/2	<<locked>>	61%	22539	61%	**48	98%
SNPE Vectan BA9 1/2	<<locked>>	61%	30139	81%	**27	100%
[Shooters World Heavy Pistol]*	<<locked>>	62%	24816	67%	**67	81%
Shooters World Major Pistol	<<locked>>	61%	30385	82%	**04	91%
Somchem MS200	<<locked>>	61%	28964	78%	**40	100%
Vihtavuori 3N37	<<locked>>	61%	26658	72%	**53	100%
[Vihtavuori 3N38]*	<<locked>>	61%	19493	53%	**22	86%
[Vihtavuori N105]*	<<locked>>	61%	15360	42%	**34	85%
Vihtavuori N32C Tin Star	<<locked>>	61%	19464	53%	**12	100%
Vihtavuori N340	<<locked>>	61%	28311	77%	**40	100%
Vihtavuori N350	<<locked>>	61%	24743	67%	**24	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