Load data for 9 x 21 + .355 | 124gr | Geco HEXAGON

Recommended Powder(s): Accurate Solo 1250, Alliant UNIQUE, Maxam CSB 2, ReloadSwiss RS 20, SNPE Vectan BA9 1/2

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.355 \| 124gr \| Geco HEXAGON
Manufacturer SKU:	2319010
Bullet Weight:	124gr \| 8.0g
Bullet Diameter:	0.355" \| 9.02mm
Bullet Length:	0.611" \| 15.5mm
Caliber:	9 x 21 load data
Case Length (l3):	0.830" \| 21.1mm
Cartridge Length (C.O.L.):	1.154" \| 29.3mm
Seated Depth:	0.287" \| 7.3mm
Shank Seated Depth:	0.287" \| 7.3mm
Case Capacity:	15.5 Grains of Water \| 1.01 cm³
Primer Size:	Small Pistol (SP)
Max. allowed Pressure:	34084 psi \| 2350 bar
LID:	LID_B9010_C1232
Last updated:	2025-01-01

Load data for 102 loads in caliber 9 x 21 with .355 | 124gr | Geco HEXAGON bullet and 51 powders such as Accurate Solo 1250, Alliant UNIQUE, Maxam CSB 2, ReloadSwiss RS 20, SNPE Vectan BA9 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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Use the Personalized Load Calculator to customize loads to your own specific requirements. Find more details in the help section.

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.

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>>	79%	29428	86%	**48	100%
ADI APS 350	<<locked>>	80%	30400	89%	**4	100%
ADI APS 450	<<locked>>	81%	29283	86%	**7	100%
ADI AS 30	<<locked>>	86%	28848	85%	**43	100%
ADI AS 50N	<<locked>>	83%	28718	84%	**86	100%
Accurate No. 2	<<locked>>	85%	29124	85%	**15	97%
Accurate No. 5	<<locked>>	72%	30110	88%	**94	90%
Accurate Solo 1000	<<locked>>	87%	30661	90%	**86	100%
Accurate Solo 1250 👍	<<locked>>	94%	29443	86%	**25	100%
Alliant BULLSEYE	<<locked>>	82%	29109	85%	**68	99%
[Alliant POWER PISTOL]*	<<locked>>	96%	29486	87%	**27	86%
Alliant UNIQUE 👍	<<locked>>	97%	29631	87%	**98	99%
Baschieri & Pellagri 100	<<locked>>	87%	29066	85%	**73	100%
Hodgdon Clays	<<locked>>	80%	30589	90%	**8	100%
Hodgdon HP38	<<locked>>	65%	28877	85%	**06	100%
Hodgdon HS-6	<<locked>>	79%	30516	90%	**91	92%
Hodgdon Longshot	<<locked>>	76%	30501	89%	**98	94%
Hodgdon Universal	<<locked>>	88%	29428	86%	**48	100%
Hodgdon TrailBoss	<<locked>>	96%	8746	26%	**2	99%
Lovex D036	<<locked>>	72%	30066	88%	**94	90%
Lovex S011	<<locked>>	74%	28964	85%	**86	100%
Lovex S020	<<locked>>	87%	29428	86%	**55	100%
Maxam CSB 1	<<locked>>	95%	27543	81%	**02	100%
Maxam CSB 2 👍	<<locked>>	96%	27963	82%	**42	100%
Maxam CSB 3	<<locked>>	91%	29095	85%	**02	100%
Maxam CSB 4	<<locked>>	89%	30516	90%	**02	100%
Maxam CSB 5	<<locked>>	81%	29399	86%	**43	100%
Ramshot Silhouette	<<locked>>	79%	29675	87%	**78	98%
Ramshot True Blue	<<locked>>	73%	29472	86%	**75	94%
Ramshot Zip	<<locked>>	67%	29762	87%	**22	100%
ReloadSwiss RS 12	<<locked>>	84%	29312	86%	**42	100%
ReloadSwiss RS 20 👍	<<locked>>	96%	26789	79%	**68	100%
Rottweil P 801	<<locked>>	77%	29443	86%	**09	100%
[Rottweil P 806]*	<<locked>>	97%	17724	52%	**02	85%
SNPE Vectan A0	<<locked>>	94%	27775	82%	**09	98%
SNPE Vectan BA 9	<<locked>>	87%	29747	87%	**22	100%
SNPE Vectan BA10	<<locked>>	75%	29254	86%	**7	100%
SNPE Vectan BA7 1/2	<<locked>>	96%	24337	71%	**86	90%
SNPE Vectan BA9 1/2 👍	<<locked>>	90%	29950	88%	**42	100%
Shooters World Auto Pistol	<<locked>>	72%	30066	88%	**94	90%
Somchem MP200	<<locked>>	87%	29457	86%	**71	98%
Somchem MS200	<<locked>>	92%	29805	87%	**58	100%
[Somchem S221]*	<<locked>>	83%	29095	85%	**84	82%
Vihtavuori 3N37	<<locked>>	96%	28079	82%	**81	94%
Vihtavuori N310	<<locked>>	69%	29109	85%	**10	100%
Vihtavuori N320	<<locked>>	86%	28790	84%	**96	100%
Vihtavuori N32C Tin Star	<<locked>>	97%	19406	57%	**2	100%
Vihtavuori N330	<<locked>>	89%	28326	83%	**52	100%
Vihtavuori N340	<<locked>>	94%	29776	87%	**61	99%
Vihtavuori N350	<<locked>>	97%	25773	76%	**35	93%
Winchester 231	<<locked>>	74%	29762	87%	**22	100%

Max Load - Barrel Length: 5.50''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AP 70N	<<locked>>	62%	18173	53%	**4	99%
ADI APS 350	<<locked>>	63%	20595	60%	**3	100%
ADI APS 450	<<locked>>	62%	18420	54%	**6	100%
ADI AS 30	<<locked>>	62%	16534	49%	**3	100%
ADI AS 50N	<<locked>>	62%	17172	50%	**9	100%
[Accurate No. 2]*	<<locked>>	61%	13996	41%	**0	87%
[Accurate No. 5]*	<<locked>>	60%	19856	58%	**24	82%
Accurate Solo 1000	<<locked>>	62%	16491	48%	**6	100%
Accurate Solo 1250	<<locked>>	61%	12038	35%	**0	95%
Alliant BULLSEYE	<<locked>>	61%	16360	48%	**8	94%
[Alliant POWER PISTOL]*	<<locked>>	84%	21132	62%	**83	80%
[Alliant UNIQUE]*	<<locked>>	62%	12575	37%	**6	88%
Baschieri & Pellagri 100	<<locked>>	61%	14098	41%	**0	99%
Hodgdon Clays	<<locked>>	63%	20639	61%	**6	100%
Hodgdon HP38	<<locked>>	60%	24714	73%	**50	100%
[Hodgdon HS-6]*	<<locked>>	61%	16621	49%	**1	82%
[Hodgdon Longshot]*	<<locked>>	60%	17666	52%	**8	85%
[Hodgdon Universal]²	<<locked>>	59%	14011	41%	**9	97%
Hodgdon TrailBoss	<<locked>>	90%	7876	23%	**3	98%
[Lovex D036]*	<<locked>>	60%	19812	58%	**24	82%
Lovex S011	<<locked>>	62%	20436	60%	**8	100%
Lovex S020	<<locked>>	61%	13416	39%	**6	93%
Maxam CSB 1	<<locked>>	61%	11690	34%	**4	94%
[Maxam CSB 2]²	<<locked>>	59%	10341	30%	**7	98%
[Maxam CSB 3]²	<<locked>>	59%	13053	38%	**3	99%
Maxam CSB 4	<<locked>>	61%	14939	44%	**6	100%
[Maxam CSB 5]²	<<locked>>	59%	16491	48%	**6	100%
Ramshot Silhouette	<<locked>>	60%	16636	49%	**8	90%
[Ramshot True Blue]*	<<locked>>	61%	19580	57%	**14	87%
Ramshot Zip	<<locked>>	62%	25599	75%	**70	100%
ReloadSwiss RS 12	<<locked>>	60%	14344	42%	**5	100%
[ReloadSwiss RS 20]*	<<locked>>	60%	10327	30%	**1	87%
Rottweil P 801	<<locked>>	60%	17840	52%	**8	100%
[Rottweil P 806]*	<<locked>>	91%	14852	44%	**24	81%
[SNPE Vectan A0]*	<<locked>>	60%	11661	34%	**7	86%
SNPE Vectan BA 9	<<locked>>	61%	14721	43%	**6	95%
SNPE Vectan BA10	<<locked>>	61%	20378	60%	**3	100%
[SNPE Vectan BA7 1/2]*	<<locked>>	77%	15098	44%	**9	81%
SNPE Vectan BA9 1/2	<<locked>>	62%	14576	43%	**9	97%
[Shooters World Auto Pistol]*	<<locked>>	60%	19812	58%	**24	82%
[Somchem MP200]*	<<locked>>	60%	13750	40%	**6	88%
Somchem MS200	<<locked>>	62%	13474	40%	**6	91%
[Somchem S221]*	<<locked>>	79%	25657	75%	**32	80%
[Vihtavuori 3N37]*	<<locked>>	70%	13460	40%	**6	81%
Vihtavuori N310	<<locked>>	62%	23598	69%	**1	100%
Vihtavuori N320	<<locked>>	62%	14779	43%	**6	100%
Vihtavuori N32C Tin Star	<<locked>>	60%	8108	24%	**9	100%
Vihtavuori N330	<<locked>>	62%	12647	37%	**3	97%
[Vihtavuori N340]*	<<locked>>	61%	12024	35%	**7	88%
[Vihtavuori N350]*	<<locked>>	72%	13271	39%	**9	81%
Winchester 231	<<locked>>	61%	20001	59%	**4	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.