Load data for 9 x 21 + .357 | 158gr | LOS HP

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.357 \| 158gr \| LOS HP
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_B3516_C1232
Last updated:	2026-03-24

Load data for 110 loads in caliber 9 x 21 with .357 | 158gr | LOS HP bullet and 55 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%	21683	64%	**6	84%
ADI AP 70N	<<locked>>	74%	29849	88%	**2	100%
ADI AS 30	<<locked>>	81%	29515	87%	**3	100%
ADI AS 50N	<<locked>>	80%	30530	90%	**9	100%
Accurate No. 2	<<locked>>	81%	28993	85%	**5	98%
Accurate No. 5	<<locked>>	69%	29356	86%	**1	92%
Accurate Solo 1000	<<locked>>	82%	30255	89%	**3	100%
Accurate Solo 1250	<<locked>>	90%	29892	88%	**8	100%
Alliant BE-86	<<locked>>	89%	30052	88%	**2	100%
Alliant BULLSEYE 👍	<<locked>>	80%	30269	89%	**1	100%
Alliant Herco	<<locked>>	96%	23728	70%	**6	99%
[Alliant POWER PISTOL]*	<<locked>>	92%	30197	89%	**33	89%
Alliant RED DOT	<<locked>>	84%	29849	88%	**6	100%
Alliant Sport Pistol	<<locked>>	73%	29037	85%	**8	100%
Alliant UNIQUE 👍	<<locked>>	91%	30081	88%	**4	100%
Baschieri & Pellagri 100	<<locked>>	84%	29965	88%	**6	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	96%	23409	69%	**0	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	80%	29211	86%	**5	100%
Hodgdon HP38	<<locked>>	63%	29950	88%	**9	100%
Hodgdon HS-6	<<locked>>	75%	29936	88%	**4	94%
Hodgdon Longshot	<<locked>>	72%	29617	87%	**4	96%
Hodgdon Universal	<<locked>>	82%	29849	88%	**2	100%
Hodgdon CFE Pistol	<<locked>>	86%	30371	89%	**5	100%
Lovex D036	<<locked>>	69%	29298	86%	**8	92%
Lovex S011	<<locked>>	73%	30298	89%	**6	100%
Lovex S020	<<locked>>	83%	29660	87%	**1	100%
Maxam CSB 1	<<locked>>	93%	29457	86%	**2	100%
Maxam CSB 2	<<locked>>	93%	30298	89%	**1	100%
Maxam CSB 3	<<locked>>	87%	29834	88%	**2	100%
Maxam CSB 4	<<locked>>	83%	29530	87%	**9	100%
Maxam CSB 5	<<locked>>	77%	29602	87%	**3	100%
Ramshot Silhouette 👍	<<locked>>	76%	30589	90%	**4	99%
Ramshot True Blue	<<locked>>	71%	30385	89%	**8	96%
Ramshot Zip	<<locked>>	64%	30182	89%	**8	100%
ReloadSwiss RS 12	<<locked>>	79%	29675	87%	**2	100%
ReloadSwiss RS 20 👍	<<locked>>	95%	29631	87%	**4	100%
[ReloadSwiss RS 24]*	<<locked>>	96%	30110	88%	**14	82%
Rottweil P 801	<<locked>>	74%	30661	90%	**9	100%
Rottweil P 806	<<locked>>	96%	21292	62%	**1	91%
SNPE Vectan A0	<<locked>>	94%	30226	89%	**2	100%
SNPE Vectan BA 9	<<locked>>	83%	29646	87%	**9	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	27789	82%	**5	94%
SNPE Vectan BA9 1/2	<<locked>>	85%	29805	87%	**5	100%
SNPE Vectan SP 2	<<locked>>	90%	29950	88%	**56	92%
Shooters World Auto Pistol	<<locked>>	69%	29298	86%	**8	92%
Somchem MP200	<<locked>>	83%	29675	87%	**8	99%
Somchem MS200	<<locked>>	88%	30066	88%	**5	100%
[Somchem S221]*	<<locked>>	79%	30008	88%	**7	86%
Vihtavuori 3N37	<<locked>>	95%	30618	90%	**07	97%
Vihtavuori N320	<<locked>>	82%	29225	86%	**9	100%
Vihtavuori N330	<<locked>>	86%	29878	88%	**5	100%
Vihtavuori N340 👍	<<locked>>	90%	30603	90%	**5	100%
Vihtavuori N350	<<locked>>	96%	28195	83%	**8	96%
Winchester 231	<<locked>>	71%	30182	89%	**8	100%
Winchester AutoComp	<<locked>>	92%	30226	89%	**1	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	89%	18739	55%	**3	81%
ADI AP 70N	<<locked>>	61%	20769	61%	**0	100%
ADI AS 30	<<locked>>	77%	26643	78%	**3	100%
ADI AS 50N	<<locked>>	70%	24047	71%	**0	100%
Accurate No. 2	<<locked>>	71%	21596	63%	**0	95%
[Accurate No. 5]*	<<locked>>	60%	22814	67%	**6	87%
Accurate Solo 1000	<<locked>>	74%	24889	73%	**7	100%
Accurate Solo 1250	<<locked>>	76%	21408	63%	**3	100%
Alliant BE-86	<<locked>>	73%	20407	60%	**0	100%
Alliant BULLSEYE	<<locked>>	62%	18884	55%	**0	97%
Alliant Herco	<<locked>>	84%	18739	55%	**7	97%
[Alliant POWER PISTOL]*	<<locked>>	73%	18115	53%	**6	80%
Alliant RED DOT	<<locked>>	77%	25324	74%	**0	100%
Alliant Sport Pistol	<<locked>>	62%	21437	63%	**0	98%
Alliant UNIQUE	<<locked>>	71%	18710	55%	**3	97%
Baschieri & Pellagri 100	<<locked>>	76%	24511	72%	**3	100%
Baschieri & Pellagri 102 Pistol	<<locked>>	92%	21495	63%	**0	100%
Baschieri & Pellagri 103 Pistol	<<locked>>	68%	20523	60%	**0	100%
Hodgdon HP38	<<locked>>	60%	27557	81%	**2	100%
[Hodgdon HS-6]*	<<locked>>	61%	19043	56%	**7	87%
Hodgdon Longshot	<<locked>>	62%	21901	64%	**9	92%
Hodgdon Universal	<<locked>>	67%	20769	61%	**0	100%
Hodgdon CFE Pistol	<<locked>>	69%	20204	59%	**0	100%
[Lovex D036]*	<<locked>>	60%	22771	67%	**2	87%
Lovex S011	<<locked>>	62%	22669	67%	**0	100%
Lovex S020	<<locked>>	67%	19551	57%	**3	99%
Maxam CSB 1	<<locked>>	79%	21741	64%	**0	100%
Maxam CSB 2	<<locked>>	75%	19725	58%	**3	100%
Maxam CSB 3	<<locked>>	75%	22858	67%	**3	100%
Maxam CSB 4	<<locked>>	74%	24163	71%	**3	100%
Maxam CSB 5	<<locked>>	73%	26774	79%	**7	100%
Ramshot Silhouette	<<locked>>	61%	19508	57%	**7	95%
Ramshot True Blue	<<locked>>	61%	22350	66%	**9	92%
Ramshot Zip	<<locked>>	60%	26803	79%	**9	100%
ReloadSwiss RS 12	<<locked>>	64%	20262	59%	**7	100%
ReloadSwiss RS 20	<<locked>>	73%	17608	52%	**3	98%
[ReloadSwiss RS 24]*	<<locked>>	94%	28282	83%	**1	81%
Rottweil P 801	<<locked>>	62%	22191	65%	**0	100%
[Rottweil P 806]*	<<locked>>	80%	13996	41%	**3	83%
SNPE Vectan A0	<<locked>>	79%	21814	64%	**7	98%
SNPE Vectan BA 9	<<locked>>	71%	21872	64%	**7	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	82%	20044	59%	**0	89%
SNPE Vectan BA9 1/2	<<locked>>	70%	20856	61%	**7	100%
[SNPE Vectan SP 2]*	<<locked>>	68%	16099	47%	**3	81%
[Shooters World Auto Pistol]*	<<locked>>	60%	22771	67%	**2	87%
Somchem MP200	<<locked>>	67%	19580	57%	**7	96%
Somchem MS200	<<locked>>	72%	20537	60%	**0	98%
[Somchem S221]*	<<locked>>	69%	22002	65%	**6	80%
[Vihtavuori 3N37]*	<<locked>>	75%	18289	54%	**3	89%
Vihtavuori N320	<<locked>>	72%	22872	67%	**3	100%
Vihtavuori N330	<<locked>>	70%	19334	57%	**0	100%
Vihtavuori N340	<<locked>>	72%	19798	58%	**3	97%
Vihtavuori N350	<<locked>>	77%	18028	53%	**3	90%
Winchester 231	<<locked>>	60%	22002	65%	**3	100%
Winchester AutoComp	<<locked>>	75%	20479	60%	**0	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