Load data for 9 x 21 + .356 | 125gr | H&N KS KB

Recommended Powder(s): Alliant BULLSEYE, Alliant UNIQUE, Maxam CSB 2, Ramshot Silhouette, ReloadSwiss RS 20

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.356 \| 125gr \| H&N KS KB
Bullet Weight:	125gr \| 8.1g
Bullet Diameter:	0.356" \| 9.04mm
Bullet Length:	0.530" \| 13.5mm
Caliber:	9 x 21 load data
Case Length (l3):	0.830" \| 21.1mm
Cartridge Length (C.O.L.):	1.154" \| 29.3mm
Seated Depth:	0.206" \| 5.2mm
Shank Seated Depth:	0.206" \| 5.2mm
Case Capacity:	15.5 Grains of Water \| 1.01 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	34084 psi \| 2350 bar
LID:	LID_B7450_C1232
Last updated:	2025-01-01

Load data for 108 loads in caliber 9 x 21 with .356 | 125gr | H&N KS KB bullet and 54 powders such as Alliant BULLSEYE, Alliant UNIQUE, Maxam CSB 2, Ramshot Silhouette, ReloadSwiss RS 20. 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.

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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%	21712	64%	**25	85%
ADI AP 70N	<<locked>>	75%	29327	86%	**11	100%
ADI APS 350	<<locked>>	75%	29080	85%	**10	100%
ADI APS 450	<<locked>>	78%	29617	87%	**50	100%
ADI AS 30	<<locked>>	82%	28761	84%	**93	100%
ADI AS 50N	<<locked>>	81%	29921	88%	**55	100%
Accurate No. 2	<<locked>>	81%	29225	86%	**88	99%
Accurate No. 5	<<locked>>	68%	29066	85%	**57	92%
Accurate Solo 1000	<<locked>>	82%	30168	89%	**35	100%
Accurate Solo 1250	<<locked>>	90%	29733	87%	**91	100%
Alliant BULLSEYE 👍	<<locked>>	78%	29675	87%	**47	100%
Alliant POWER PISTOL	<<locked>>	92%	30313	89%	**19	90%
Alliant UNIQUE 👍	<<locked>>	91%	28892	85%	**50	100%
Baschieri & Pellagri 100	<<locked>>	84%	29646	87%	**35	100%
Hodgdon Clays	<<locked>>	75%	29356	86%	**27	100%
Hodgdon HP38	<<locked>>	62%	29167	86%	**65	100%
Hodgdon HS-6	<<locked>>	75%	30647	90%	**70	95%
Hodgdon Longshot	<<locked>>	71%	29486	87%	**53	96%
Hodgdon Universal	<<locked>>	83%	29327	86%	**11	100%
Hodgdon TrailBoss	<<locked>>	96%	9036	26%	**1	100%
Lovex D036	<<locked>>	69%	30676	90%	**80	93%
Lovex S011	<<locked>>	72%	30008	88%	**58	100%
Lovex S020	<<locked>>	82%	28921	85%	**11	100%
Maxam CSB 1	<<locked>>	93%	29617	87%	**81	100%
Maxam CSB 2 👍	<<locked>>	93%	30226	89%	**17	100%
Maxam CSB 3	<<locked>>	87%	30110	88%	**68	100%
Maxam CSB 4	<<locked>>	83%	29776	87%	**48	100%
Maxam CSB 5	<<locked>>	78%	29747	87%	**96	100%
Ramshot Silhouette 👍	<<locked>>	75%	29762	87%	**47	99%
Ramshot True Blue	<<locked>>	70%	30197	89%	**57	96%
Ramshot Zip	<<locked>>	64%	29950	88%	**81	100%
ReloadSwiss RS 12	<<locked>>	80%	29414	86%	**94	100%
ReloadSwiss RS 14	<<locked>>	94%	7469	22%	**8	96%
ReloadSwiss RS 20 👍	<<locked>>	94%	30008	88%	**70	100%
[ReloadSwiss RS 24]*	<<locked>>	94%	29414	86%	**86	82%
Rottweil P 801	<<locked>>	74%	29907	88%	**65	100%
Rottweil P 806	<<locked>>	96%	20798	61%	**30	91%
SNPE Vectan A0	<<locked>>	91%	28877	85%	**91	100%
SNPE Vectan BA 9	<<locked>>	82%	28993	85%	**71	100%
SNPE Vectan BA10	<<locked>>	72%	29602	87%	**50	100%
SNPE Vectan BA7 1/2	<<locked>>	95%	27021	79%	**98	94%
SNPE Vectan BA9 1/2	<<locked>>	85%	29718	87%	**98	100%
Shooters World Auto Pistol	<<locked>>	69%	30676	90%	**80	93%
Somchem MP200	<<locked>>	84%	30052	88%	**47	100%
Somchem MS200	<<locked>>	87%	29051	85%	**14	100%
[Somchem S221]*	<<locked>>	79%	29501	87%	**73	86%
Vihtavuori 3N37	<<locked>>	93%	29327	86%	**70	97%
Vihtavuori N310	<<locked>>	67%	30037	88%	**73	100%
Vihtavuori N320	<<locked>>	83%	30342	89%	**68	100%
Vihtavuori N32C Tin Star	<<locked>>	94%	20407	60%	**1	100%
Vihtavuori N330	<<locked>>	85%	28645	84%	**07	100%
Vihtavuori N340	<<locked>>	88%	29095	85%	**17	100%
Vihtavuori N350	<<locked>>	96%	29269	86%	**63	97%
Winchester 231	<<locked>>	71%	29950	88%	**81	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AP 100]*	<<locked>>	87%	17143	50%	**27	80%
ADI AP 70N	<<locked>>	62%	19232	56%	**50	100%
ADI APS 350	<<locked>>	61%	20711	61%	**2	100%
ADI APS 450	<<locked>>	62%	20044	59%	**5	100%
ADI AS 30	<<locked>>	60%	16143	47%	**6	100%
ADI AS 50N	<<locked>>	61%	17651	52%	**1	100%
Accurate No. 2	<<locked>>	61%	15432	45%	**5	91%
[Accurate No. 5]*	<<locked>>	61%	22974	67%	**55	88%
Accurate Solo 1000	<<locked>>	61%	17622	52%	**8	100%
Accurate Solo 1250	<<locked>>	60%	12604	37%	**6	97%
Alliant BULLSEYE	<<locked>>	61%	18115	53%	**40	97%
[Alliant POWER PISTOL]*	<<locked>>	74%	17796	52%	**73	80%
Alliant UNIQUE	<<locked>>	60%	12386	36%	**2	91%
Baschieri & Pellagri 100	<<locked>>	60%	14649	43%	**6	100%
Hodgdon Clays	<<locked>>	61%	20914	61%	**9	100%
Hodgdon HP38	<<locked>>	60%	27296	80%	**42	100%
[Hodgdon HS-6]*	<<locked>>	61%	18188	53%	**50	87%
Hodgdon Longshot	<<locked>>	61%	20726	61%	**06	91%
Hodgdon Universal	<<locked>>	61%	15229	45%	**8	99%
Hodgdon TrailBoss	<<locked>>	82%	6672	20%	**6	98%
[Lovex D036]*	<<locked>>	61%	22945	67%	**55	88%
Lovex S011	<<locked>>	60%	20856	61%	**27	100%
Lovex S020	<<locked>>	61%	14533	43%	**8	96%
Maxam CSB 1	<<locked>>	60%	12009	35%	**6	97%
Maxam CSB 2	<<locked>>	61%	11705	34%	**6	100%
Maxam CSB 3	<<locked>>	62%	15127	44%	**2	100%
Maxam CSB 4	<<locked>>	60%	15896	47%	**5	100%
Maxam CSB 5	<<locked>>	60%	18115	53%	**2	100%
Ramshot Silhouette	<<locked>>	62%	19247	56%	**66	95%
Ramshot True Blue	<<locked>>	61%	21335	63%	**12	92%
Ramshot Zip	<<locked>>	62%	28137	83%	**58	100%
ReloadSwiss RS 12	<<locked>>	61%	16027	47%	**7	100%
ReloadSwiss RS 14	<<locked>>	85%	6121	18%	**3	93%
ReloadSwiss RS 20	<<locked>>	60%	11095	33%	**6	91%
[ReloadSwiss RS 24]*	<<locked>>	90%	26281	77%	**37	80%
Rottweil P 801	<<locked>>	60%	19290	57%	**20	100%
[Rottweil P 806]*	<<locked>>	81%	12415	36%	**20	81%
SNPE Vectan A0	<<locked>>	61%	12734	37%	**6	91%
SNPE Vectan BA 9	<<locked>>	61%	15795	46%	**5	98%
SNPE Vectan BA10	<<locked>>	61%	21756	64%	**1	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	66%	12125	36%	**9	80%
SNPE Vectan BA9 1/2	<<locked>>	60%	14620	43%	**8	98%
[Shooters World Auto Pistol]*	<<locked>>	61%	22945	67%	**55	88%
Somchem MP200	<<locked>>	62%	15490	45%	**8	93%
Somchem MS200	<<locked>>	62%	14605	43%	**2	94%
[Somchem S221]*	<<locked>>	70%	21205	62%	**25	80%
[Vihtavuori 3N37]*	<<locked>>	61%	10936	32%	**6	80%
Vihtavuori N310	<<locked>>	61%	25498	75%	**17	100%
Vihtavuori N320	<<locked>>	61%	15592	46%	**1	100%
Vihtavuori N32C Tin Star	<<locked>>	62%	8499	25%	**8	100%
Vihtavuori N330	<<locked>>	62%	14112	41%	**1	99%
Vihtavuori N340	<<locked>>	61%	12981	38%	**2	92%
[Vihtavuori N350]*	<<locked>>	65%	11400	33%	**6	81%
Winchester 231	<<locked>>	60%	21219	62%	**60	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