Load data for 9 x 21 + .357 | 158gr | Speer SP MAG GD

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| Speer SP MAG GD
Manufacturer SKU:	4215
Bullet Weight:	158gr \| 10.2g
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_B6225_C1232
Last updated:	2026-03-07

Load data for 106 loads in caliber 9 x 21 with .357 | 158gr | Speer SP MAG GD bullet and 53 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 70N	<<locked>>	81%	29878	88%	**1	100%
ADI AS 30	<<locked>>	87%	29037	85%	**6	100%
ADI AS 50N	<<locked>>	86%	30110	88%	**9	100%
Accurate No. 2	<<locked>>	87%	30545	90%	**2	98%
Accurate No. 5	<<locked>>	74%	30385	89%	**1	91%
Accurate Solo 1000	<<locked>>	86%	29211	86%	**3	100%
Accurate Solo 1250	<<locked>>	97%	30385	89%	**2	100%
Alliant BE-86	<<locked>>	95%	30298	89%	**2	100%
Alliant BULLSEYE	<<locked>>	84%	29472	86%	**8	100%
Alliant Herco	<<locked>>	97%	19725	58%	**6	97%
[Alliant POWER PISTOL]*	<<locked>>	96%	28268	83%	**04	88%
Alliant RED DOT	<<locked>>	93%	30676	90%	**9	100%
Alliant Sport Pistol 👍	<<locked>>	78%	29979	88%	**4	100%
Alliant UNIQUE 👍	<<locked>>	96%	27992	82%	**8	100%
Baschieri & Pellagri 100	<<locked>>	91%	30429	89%	**9	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	86%	29602	87%	**5	100%
Hodgdon HP38	<<locked>>	68%	30458	89%	**2	100%
Hodgdon HS-6	<<locked>>	79%	29428	86%	**1	93%
Hodgdon Longshot	<<locked>>	77%	30066	88%	**4	95%
Hodgdon TiteGroup	<<locked>>	62%	30545	90%	**3	100%
Hodgdon Universal	<<locked>>	90%	29878	88%	**1	100%
Hodgdon CFE Pistol	<<locked>>	93%	30356	89%	**8	100%
Lovex D036	<<locked>>	74%	30342	89%	**1	91%
Lovex S011	<<locked>>	76%	29646	87%	**6	100%
Lovex S020	<<locked>>	89%	30124	88%	**5	100%
Maxam CSB 1	<<locked>>	96%	27064	79%	**6	100%
Maxam CSB 2	<<locked>>	95%	26266	77%	**2	100%
Maxam CSB 3	<<locked>>	94%	30182	89%	**5	100%
Maxam CSB 4	<<locked>>	89%	29689	87%	**2	100%
Maxam CSB 5	<<locked>>	83%	29704	87%	**6	100%
Ramshot Silhouette	<<locked>>	80%	29588	87%	**1	99%
Ramshot True Blue	<<locked>>	75%	29747	87%	**4	95%
Ramshot Zip	<<locked>>	69%	30661	90%	**8	100%
ReloadSwiss RS 12	<<locked>>	87%	29457	86%	**2	100%
ReloadSwiss RS 20 👍	<<locked>>	96%	26020	76%	**1	100%
Rottweil P 801	<<locked>>	79%	29269	86%	**9	100%
[Rottweil P 806]*	<<locked>>	97%	16636	49%	**2	86%
SNPE Vectan A0	<<locked>>	96%	28224	83%	**9	99%
SNPE Vectan BA 9	<<locked>>	89%	30240	89%	**2	100%
SNPE Vectan BA7 1/2	<<locked>>	97%	23873	70%	**9	91%
SNPE Vectan BA9 1/2	<<locked>>	92%	30153	88%	**8	100%
SNPE Vectan SP 2	<<locked>>	96%	28848	85%	**40	91%
Shooters World Auto Pistol	<<locked>>	74%	30342	89%	**1	91%
Somchem MP200	<<locked>>	89%	29660	87%	**8	99%
Somchem MS200 👍	<<locked>>	95%	30414	89%	**8	100%
[Somchem S221]*	<<locked>>	85%	29733	87%	**4	85%
Vihtavuori 3N37	<<locked>>	97%	27253	80%	**8	95%
Vihtavuori N320	<<locked>>	88%	29327	86%	**2	100%
Vihtavuori N330	<<locked>>	93%	29907	88%	**8	100%
Vihtavuori N340 👍	<<locked>>	95%	29544	87%	**1	100%
Vihtavuori N350	<<locked>>	96%	24120	71%	**9	93%
Winchester 231	<<locked>>	77%	30661	90%	**8	100%
Winchester AutoComp	<<locked>>	97%	28892	85%	**2	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 70N	<<locked>>	67%	19914	58%	**3	100%
ADI AS 30	<<locked>>	82%	25933	76%	**7	100%
ADI AS 50N	<<locked>>	75%	23032	68%	**0	100%
Accurate No. 2	<<locked>>	76%	21582	63%	**7	95%
[Accurate No. 5]*	<<locked>>	60%	18913	56%	**3	84%
Accurate Solo 1000	<<locked>>	79%	24831	73%	**0	100%
Accurate Solo 1250	<<locked>>	82%	20900	61%	**0	100%
Alliant BE-86	<<locked>>	80%	20262	59%	**0	100%
Alliant BULLSEYE	<<locked>>	68%	19392	57%	**3	97%
Alliant Herco	<<locked>>	92%	18043	53%	**7	96%
[Alliant POWER PISTOL]*	<<locked>>	81%	18884	55%	**6	80%
Alliant RED DOT	<<locked>>	83%	24308	71%	**7	100%
Alliant Sport Pistol	<<locked>>	63%	19000	56%	**7	96%
Alliant UNIQUE	<<locked>>	78%	18028	53%	**7	96%
Baschieri & Pellagri 100	<<locked>>	82%	24323	71%	**3	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	74%	20784	61%	**0	100%
Hodgdon HP38	<<locked>>	62%	24947	73%	**6	100%
[Hodgdon HS-6]*	<<locked>>	65%	18289	54%	**0	86%
[Hodgdon Longshot]*	<<locked>>	63%	18710	55%	**0	89%
Hodgdon TiteGroup	<<locked>>	60%	28747	84%	**6	100%
Hodgdon Universal	<<locked>>	74%	19914	58%	**3	100%
Hodgdon CFE Pistol	<<locked>>	76%	19856	58%	**7	100%
[Lovex D036]*	<<locked>>	60%	18884	55%	**3	83%
Lovex S011	<<locked>>	68%	23902	70%	**7	100%
Lovex S020	<<locked>>	74%	19377	57%	**0	98%
Maxam CSB 1	<<locked>>	85%	20726	61%	**3	100%
Maxam CSB 2	<<locked>>	80%	17869	52%	**3	100%
Maxam CSB 3	<<locked>>	81%	22176	65%	**0	100%
Maxam CSB 4	<<locked>>	77%	22582	66%	**0	100%
Maxam CSB 5	<<locked>>	78%	26426	78%	**7	100%
Ramshot Silhouette	<<locked>>	65%	18826	55%	**7	94%
[Ramshot True Blue]*	<<locked>>	61%	18478	54%	**0	88%
Ramshot Zip	<<locked>>	61%	24091	71%	**0	100%
ReloadSwiss RS 12	<<locked>>	71%	19043	56%	**0	100%
ReloadSwiss RS 20	<<locked>>	81%	17506	51%	**0	98%
Rottweil P 801	<<locked>>	68%	21306	62%	**7	100%
[Rottweil P 806]*	<<locked>>	89%	13024	38%	**0	81%
SNPE Vectan A0	<<locked>>	84%	21277	62%	**3	97%
SNPE Vectan BA 9	<<locked>>	76%	21640	63%	**7	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	90%	19914	58%	**3	88%
SNPE Vectan BA9 1/2	<<locked>>	76%	20218	59%	**3	100%
[SNPE Vectan SP 2]*	<<locked>>	78%	16534	49%	**6	81%
[Shooters World Auto Pistol]*	<<locked>>	60%	18884	55%	**3	83%
Somchem MP200	<<locked>>	74%	19392	57%	**3	95%
Somchem MS200	<<locked>>	77%	19624	58%	**3	97%
[Somchem S221]*	<<locked>>	77%	22727	67%	**2	80%
[Vihtavuori 3N37]*	<<locked>>	80%	17216	50%	**3	88%
Vihtavuori N320	<<locked>>	77%	21785	64%	**0	100%
Vihtavuori N330	<<locked>>	75%	18072	53%	**3	100%
Vihtavuori N340	<<locked>>	80%	19609	58%	**0	97%
[Vihtavuori N350]*	<<locked>>	85%	18202	53%	**0	89%
Winchester 231	<<locked>>	65%	21567	63%	**0	100%
Winchester AutoComp	<<locked>>	80%	19247	56%	**0	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