Load data for 9.3 x 57 + .366 | 255gr | Geco EXPRESS

Recommended Powder(s): Accurate 2495, Accurate 4064, Alliant AR-Comp, IMR 3031, Norma 202

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.366 \| 255gr \| Geco EXPRESS
Manufacturer SKU:	2416988
Bullet Weight:	255gr \| 16.5g
Bullet Diameter:	0.366" \| 9.30mm
Bullet Length:	1.299" \| 33.0mm
Caliber:	9.3 x 57 load data
Case Length (l3):	2.224" \| 56.5mm
Cartridge Length (C.O.L.):	3.180" \| 80.8mm
Seated Depth:	0.343" \| 8.7mm
Shank Seated Depth:	0.343" \| 8.7mm
Case Capacity:	63.0 Grains of Water \| 4.09 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	43511 psi \| 3000 bar
LID:	LID_B9003_C1256
Last updated:	2025-01-01

Load data for 114 loads in caliber 9.3 x 57 with .366 | 255gr | Geco EXPRESS bullet and 57 powders such as Accurate 2495, Accurate 4064, Alliant AR-Comp, IMR 3031, Norma 202. 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 AR 2206H]*	<<locked>>	90%	38682	89%	**85	94%
[ADI AR 2208]*	<<locked>>	95%	38812	89%	**65	93%
Accurate 2015	<<locked>>	86%	38972	90%	**52	100%
[Accurate 2200]*	<<locked>>	87%	38421	88%	**33	92%
Accurate 2230	<<locked>>	84%	38595	89%	**52	95%
Accurate 2460	<<locked>>	85%	38479	88%	**69	97%
Accurate 2495 👍	<<locked>>	92%	38725	89%	**34	100%
Accurate 2520	<<locked>>	90%	39088	90%	**28	98%
Accurate 4064 👍	<<locked>>	97%	38029	87%	**24	99%
Alliant AR-Comp 👍	<<locked>>	90%	38827	89%	**24	100%
Alliant Reloder- TS 15.5	<<locked>>	97%	38290	88%	**08	95%
[Alliant Reloder-15]*	<<locked>>	94%	38682	89%	**11	93%
[Baschieri & Pellagri 107]*	<<locked>>	90%	38566	89%	**92	92%
Hodgdon BL-C2	<<locked>>	90%	38609	89%	**28	96%
Hodgdon Benchmark	<<locked>>	85%	38580	89%	**19	96%
Hodgdon H322	<<locked>>	86%	38479	88%	**82	99%
[Hodgdon H380]*	<<locked>>	96%	38798	89%	**95	91%
[Hodgdon VARGET]*	<<locked>>	95%	38435	88%	**59	93%
IMR 3031 👍	<<locked>>	94%	38682	89%	**41	100%
[IMR 4064]*	<<locked>>	96%	38464	88%	**59	93%
[IMR 4895]*	<<locked>>	94%	38638	89%	**24	94%
IMR 8208 XBR	<<locked>>	88%	38754	89%	**69	96%
Lovex D073.4	<<locked>>	83%	38551	89%	**56	97%
Lovex D073.5	<<locked>>	85%	38740	89%	**75	97%
Lovex D073.6	<<locked>>	93%	39088	90%	**28	98%
[Lovex S060]*	<<locked>>	88%	38450	88%	**13	94%
Lovex S062	<<locked>>	95%	38566	89%	**82	96%
Norma 201	<<locked>>	91%	39117	90%	**75	96%
Norma 202 👍	<<locked>>	91%	38682	89%	**92	98%
[Norma 203B]*	<<locked>>	95%	38522	89%	**15	94%
[Ramshot Big Game]*	<<locked>>	94%	38841	89%	**15	93%
[Ramshot Wild Boar]*	<<locked>>	89%	39030	90%	**01	94%
[Ramshot X-Terminator]*	<<locked>>	85%	38827	89%	**42	94%
ReloadSwiss RS 40	<<locked>>	84%	38754	89%	**69	97%
ReloadSwiss RS 52	<<locked>>	96%	38696	89%	**51	96%
Rottweil R 901	<<locked>>	88%	38827	89%	**59	98%
Rottweil R 902	<<locked>>	92%	38696	89%	**59	96%
[Rottweil R 903]*	<<locked>>	97%	34708	80%	**49	94%
[SNPE Vectan SP 11]*	<<locked>>	97%	37550	86%	**98	93%
[SNPE Vectan SP 9]*	<<locked>>	91%	38653	89%	**85	94%
SNPE Vectan Tubal 3000	<<locked>>	88%	38580	89%	**06	98%
SNPE Vectan Tubal 5000	<<locked>>	96%	38856	89%	**29	99%
Shooters World Match Rifle	<<locked>>	93%	39088	90%	**28	98%
Shooters World Precision	<<locked>>	95%	38566	89%	**82	96%
Somchem S321	<<locked>>	86%	39001	90%	**95	96%
Somchem S335	<<locked>>	89%	38624	89%	**29	99%
[Somchem S341]*	<<locked>>	90%	38174	88%	**65	93%
[Somchem S355]*	<<locked>>	97%	36651	84%	**69	94%
Vihtavuori N130	<<locked>>	85%	38986	90%	**13	100%
Vihtavuori N133	<<locked>>	91%	38798	89%	**26	100%
Vihtavuori N135	<<locked>>	97%	34490	79%	**26	99%
Vihtavuori N140	<<locked>>	93%	38653	89%	**75	99%
[Vihtavuori N150]*	<<locked>>	97%	31053	71%	**41	94%
Vihtavuori N530	<<locked>>	87%	38870	89%	**82	96%
Vihtavuori N540	<<locked>>	93%	38769	89%	**98	98%
Winchester 748	<<locked>>	87%	38841	89%	**21	97%
Winchester StaBALL Match	<<locked>>	85%	38711	89%	**05	95%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	82%	29979	69%	**11	90%
[ADI AR 2208]*	<<locked>>	89%	32822	75%	**47	90%
Accurate 2015	<<locked>>	81%	33156	76%	**51	99%
[Accurate 2200]*	<<locked>>	84%	34998	80%	**64	90%
[Accurate 2230]*	<<locked>>	81%	34142	78%	**73	93%
Accurate 2460	<<locked>>	81%	34200	79%	**87	95%
Accurate 2495	<<locked>>	81%	27137	62%	**05	98%
[Accurate 2520]*	<<locked>>	81%	28181	65%	**11	94%
[Accurate 4064]*	<<locked>>	81%	22887	53%	**93	93%
Alliant AR-Comp	<<locked>>	81%	29109	67%	**37	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	85%	27108	62%	**69	90%
[Alliant Reloder-15]*	<<locked>>	87%	31270	72%	**60	90%
[Baschieri & Pellagri 107]*	<<locked>>	87%	34476	79%	**10	90%
[Hodgdon BL-C2]*	<<locked>>	81%	28732	66%	**21	91%
Hodgdon Benchmark	<<locked>>	81%	33823	78%	**31	95%
Hodgdon H322	<<locked>>	81%	32663	75%	**70	98%
[Hodgdon H380]*	<<locked>>	94%	35868	82%	**42	90%
[Hodgdon VARGET]*	<<locked>>	89%	32329	74%	**37	90%
IMR 3031	<<locked>>	81%	25860	59%	**62	96%
[IMR 4064]*	<<locked>>	89%	31734	73%	**21	90%
[IMR 4895]*	<<locked>>	85%	29414	68%	**31	90%
[IMR 8208 XBR]*	<<locked>>	81%	31241	72%	**18	93%
Lovex D073.4	<<locked>>	81%	35549	82%	**03	96%
Lovex D073.5	<<locked>>	81%	33924	78%	**83	95%
[Lovex D073.6]*	<<locked>>	81%	26455	61%	**69	93%
[Lovex S060]*	<<locked>>	81%	31241	72%	**65	91%
[Lovex S062]*	<<locked>>	81%	25628	59%	**06	90%
[Norma 201]*	<<locked>>	81%	28776	66%	**62	92%
Norma 202	<<locked>>	81%	28239	65%	**78	95%
[Norma 203B]*	<<locked>>	87%	29979	69%	**34	90%
[Ramshot Big Game]*	<<locked>>	89%	32198	74%	**80	90%
[Ramshot Wild Boar]*	<<locked>>	82%	30516	70%	**28	90%
[Ramshot X-Terminator]*	<<locked>>	81%	34055	78%	**51	92%
ReloadSwiss RS 40	<<locked>>	81%	35273	81%	**00	96%
[ReloadSwiss RS 52]*	<<locked>>	84%	26556	61%	**75	90%
Rottweil R 901	<<locked>>	81%	32155	74%	**28	96%
[Rottweil R 902]*	<<locked>>	81%	27253	63%	**23	91%
[Rottweil R 903]*	<<locked>>	90%	27818	64%	**01	90%
[SNPE Vectan SP 11]*	<<locked>>	91%	31894	73%	**77	90%
[SNPE Vectan SP 9]*	<<locked>>	83%	30458	70%	**18	90%
SNPE Vectan Tubal 3000	<<locked>>	81%	30922	71%	**62	96%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	25048	58%	**47	94%
[Shooters World Match Rifle]*	<<locked>>	81%	26455	61%	**69	93%
[Shooters World Precision]*	<<locked>>	81%	25628	59%	**06	90%
[Somchem S321]*	<<locked>>	81%	32692	75%	**77	94%
Somchem S335	<<locked>>	81%	29994	69%	**62	97%
[Somchem S341]*	<<locked>>	83%	30618	70%	**11	90%
[Somchem S355]*	<<locked>>	89%	28282	65%	**91	90%
Vihtavuori N130	<<locked>>	81%	34693	80%	**37	100%
Vihtavuori N133	<<locked>>	81%	28747	66%	**36	98%
[Vihtavuori N135]*	<<locked>>	81%	21727	50%	**18	94%
Vihtavuori N140	<<locked>>	81%	26774	62%	**29	95%
[Vihtavuori N150]*	<<locked>>	90%	25164	58%	**93	90%
[Vihtavuori N530]*	<<locked>>	81%	32430	75%	**57	94%
[Vihtavuori N540]*	<<locked>>	81%	26353	61%	**36	94%
[Winchester 748]*	<<locked>>	81%	31952	73%	**83	94%
[Winchester StaBALL Match]*	<<locked>>	81%	33968	78%	**13	93%

Start Load - Barrel Length: 23.60''

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