Load data for 9 x 21 + .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:	<<locked>>
Caliber:	9 x 21 load data
Case Length (l3):	0.830" \| 21.1mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	15.5 Grains of Water \| 1.01 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	34084 psi \| 2350 bar
LID:	LID_B5945_C1232
Last updated:	2026-01-27

Load data for 114 loads in caliber 9 x 21 with .357 | 125gr | Sierra JSP FN bullet and 57 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%	22655	66%	**32	85%
ADI AP 70N	<<locked>>	74%	29820	87%	**98	100%
ADI APS 350	<<locked>>	75%	30284	89%	**14	100%
ADI APS 450	<<locked>>	77%	29747	87%	**47	100%
ADI AS 30	<<locked>>	81%	29501	87%	**93	100%
ADI AS 50N	<<locked>>	79%	30153	88%	**45	100%
Accurate No. 2	<<locked>>	80%	29805	87%	**81	99%
Accurate No. 5	<<locked>>	67%	30124	88%	**60	92%
Accurate Solo 1000	<<locked>>	81%	30603	90%	**25	100%
Accurate Solo 1250	<<locked>>	88%	29486	87%	**75	100%
Alliant BULLSEYE 👍	<<locked>>	78%	30487	89%	**43	100%
Alliant Herco	<<locked>>	96%	24671	72%	**61	99%
Alliant POWER PISTOL	<<locked>>	91%	30647	90%	**16	90%
Alliant Sport Pistol 👍	<<locked>>	72%	29863	88%	**34	100%
Alliant UNIQUE 👍	<<locked>>	90%	30443	89%	**57	100%
Baschieri & Pellagri 100	<<locked>>	83%	30458	89%	**35	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	96%	24569	72%	**93	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	79%	29849	88%	**61	100%
Hodgdon Clays	<<locked>>	75%	30618	90%	**30	100%
Hodgdon HS-6	<<locked>>	74%	30124	88%	**50	95%
Hodgdon Longshot	<<locked>>	71%	30603	90%	**60	96%
Hodgdon Universal	<<locked>>	81%	29820	87%	**98	100%
Hodgdon CFE Pistol	<<locked>>	84%	29573	87%	**91	100%
Lovex D036	<<locked>>	67%	30081	88%	**60	92%
Lovex S011	<<locked>>	70%	29443	86%	**38	100%
Lovex S020	<<locked>>	81%	30008	88%	**14	100%
Maxam CSB 1	<<locked>>	92%	30618	90%	**81	100%
Maxam CSB 2	<<locked>>	91%	30618	90%	**07	100%
Maxam CSB 3	<<locked>>	85%	29631	87%	**55	100%
Maxam CSB 4	<<locked>>	82%	30255	89%	**42	100%
Maxam CSB 5	<<locked>>	77%	30298	89%	**93	100%
Ramshot Silhouette 👍	<<locked>>	74%	30501	89%	**47	99%
Ramshot True Blue	<<locked>>	69%	30400	89%	**50	96%
Ramshot Zip	<<locked>>	62%	29791	87%	**68	100%
ReloadSwiss RS 12	<<locked>>	78%	30298	89%	**88	100%
ReloadSwiss RS 20 👍	<<locked>>	93%	30023	88%	**60	100%
[ReloadSwiss RS 24]*	<<locked>>	94%	30414	89%	**93	83%
Rottweil P 801	<<locked>>	72%	30560	90%	**55	100%
Rottweil P 806	<<locked>>	96%	23482	69%	**70	93%
SNPE Vectan A0	<<locked>>	92%	30385	89%	**98	100%
SNPE Vectan BA 9	<<locked>>	83%	30501	89%	**81	100%
SNPE Vectan BA10	<<locked>>	72%	29733	87%	**47	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	29747	87%	**27	95%
SNPE Vectan BA9 1/2	<<locked>>	85%	30676	90%	**94	100%
SNPE Vectan SP 2	<<locked>>	88%	30081	88%	**25	92%
Shooters World Auto Pistol	<<locked>>	67%	30081	88%	**60	92%
Somchem MP200	<<locked>>	82%	30168	89%	**34	100%
Somchem MS200	<<locked>>	86%	29965	88%	**14	100%
[Somchem S221]*	<<locked>>	78%	30603	90%	**70	87%
Vihtavuori 3N37	<<locked>>	92%	30530	90%	**76	97%
Vihtavuori N310	<<locked>>	65%	29501	87%	**53	100%
Vihtavuori N320	<<locked>>	81%	29892	88%	**48	100%
Vihtavuori N32C Tin Star	<<locked>>	97%	23221	68%	**04	100%
Vihtavuori N330	<<locked>>	84%	29631	87%	**04	100%
Vihtavuori N340	<<locked>>	88%	30240	89%	**20	100%
Vihtavuori N350	<<locked>>	95%	30139	88%	**60	97%
Winchester 231	<<locked>>	69%	29791	87%	**68	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	85%	17738	52%	**24	81%
ADI AP 70N	<<locked>>	62%	21509	63%	**73	100%
ADI APS 350	<<locked>>	62%	21843	64%	**9	100%
ADI APS 450	<<locked>>	60%	19435	57%	**2	100%
ADI AS 30	<<locked>>	60%	17854	52%	**9	100%
ADI AS 50N	<<locked>>	62%	19580	57%	**8	100%
Accurate No. 2	<<locked>>	62%	16752	49%	**1	92%
[Accurate No. 5]*	<<locked>>	62%	24685	72%	**71	89%
Accurate Solo 1000	<<locked>>	62%	18855	55%	**8	100%
Accurate Solo 1250	<<locked>>	60%	14025	41%	**6	98%
Alliant BULLSEYE	<<locked>>	62%	19624	58%	**53	98%
[Alliant Herco]*	<<locked>>	61%	10559	31%	**7	88%
[Alliant POWER PISTOL]*	<<locked>>	72%	18478	54%	**73	80%
Alliant Sport Pistol	<<locked>>	62%	22249	65%	**06	98%
Alliant UNIQUE	<<locked>>	61%	14185	42%	**8	93%
Baschieri & Pellagri 100	<<locked>>	60%	16230	48%	**2	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	64%	10849	32%	**7	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	60%	16781	49%	**8	100%
Hodgdon Clays	<<locked>>	62%	22089	65%	**2	100%
[Hodgdon HS-6]*	<<locked>>	61%	19928	58%	**70	88%
Hodgdon Longshot	<<locked>>	62%	22336	66%	**25	92%
Hodgdon Universal	<<locked>>	61%	17216	51%	**1	100%
Hodgdon CFE Pistol	<<locked>>	61%	16143	47%	**5	99%
[Lovex D036]*	<<locked>>	62%	24656	72%	**68	89%
Lovex S011	<<locked>>	60%	22075	65%	**37	100%
Lovex S020	<<locked>>	61%	16273	48%	**8	97%
Maxam CSB 1	<<locked>>	61%	13561	40%	**9	98%
Maxam CSB 2	<<locked>>	62%	13837	41%	**5	100%
Maxam CSB 3	<<locked>>	60%	15403	45%	**9	100%
Maxam CSB 4	<<locked>>	61%	17361	51%	**8	100%
Maxam CSB 5	<<locked>>	60%	19595	57%	**8	100%
Ramshot Silhouette	<<locked>>	60%	19682	58%	**60	95%
Ramshot True Blue	<<locked>>	61%	23192	68%	**29	93%
Ramshot Zip	<<locked>>	60%	27978	82%	**45	100%
ReloadSwiss RS 12	<<locked>>	61%	18144	53%	**14	100%
ReloadSwiss RS 20	<<locked>>	61%	12430	36%	**2	93%
[ReloadSwiss RS 24]*	<<locked>>	89%	26803	79%	**27	80%
Rottweil P 801	<<locked>>	61%	21640	63%	**37	100%
[Rottweil P 806]*	<<locked>>	77%	12589	37%	**01	80%
SNPE Vectan A0	<<locked>>	61%	13996	41%	**2	92%
SNPE Vectan BA 9	<<locked>>	61%	17143	50%	**5	98%
SNPE Vectan BA10	<<locked>>	61%	22785	67%	**8	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	64%	12256	36%	**6	80%
SNPE Vectan BA9 1/2	<<locked>>	61%	16215	48%	**8	99%
[SNPE Vectan SP 2]*	<<locked>>	67%	15737	46%	**43	80%
[Shooters World Auto Pistol]*	<<locked>>	62%	24656	72%	**68	89%
Somchem MP200	<<locked>>	60%	16157	47%	**8	93%
Somchem MS200	<<locked>>	60%	15185	45%	**5	95%
[Somchem S221]*	<<locked>>	68%	21814	64%	**22	80%
[Vihtavuori 3N37]*	<<locked>>	61%	12459	37%	**6	82%
Vihtavuori N310	<<locked>>	62%	27354	80%	**27	100%
Vihtavuori N320	<<locked>>	61%	17289	51%	**8	100%
Vihtavuori N32C Tin Star	<<locked>>	70%	12705	37%	**0	100%
Vihtavuori N330	<<locked>>	60%	14620	43%	**5	99%
Vihtavuori N340	<<locked>>	62%	14518	43%	**2	94%
[Vihtavuori N350]*	<<locked>>	61%	11182	33%	**6	80%
Winchester 231	<<locked>>	61%	23018	68%	**73	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