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

Recommended Powder(s): Accurate 4064, IMR 3031, Lovex D073.6, Shooters World Match Rifle, Vihtavuori N540

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.366 \| 255gr \| Geco PLUS
Bullet Weight:	255gr \| 16.5g
Bullet Diameter:	0.366" \| 9.30mm
Bullet Length:	1.170" \| 29.7mm
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:	0.214" \| 5.4mm
Shank Seated Depth:	0.214" \| 5.4mm
Case Capacity:	63.0 Grains of Water \| 4.09 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	43511 psi \| 3000 bar
LID:	LID_B9020_C1256
Last updated:	2025-01-01

Load data for 114 loads in caliber 9.3 x 57 with .366 | 255gr | Geco PLUS bullet and 57 powders such as Accurate 4064, IMR 3031, Lovex D073.6, Shooters World Match Rifle, Vihtavuori N540. 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 AR 2206H	<<locked>>	88%	38711	89%	**18	95%
[ADI AR 2208]*	<<locked>>	93%	38740	89%	**95	94%
Accurate 2015	<<locked>>	84%	39073	90%	**78	100%
[Accurate 2200]*	<<locked>>	86%	38841	89%	**69	92%
Accurate 2495	<<locked>>	89%	38653	89%	**54	100%
Accurate 2520	<<locked>>	88%	38798	89%	**51	98%
Accurate 4064 👍	<<locked>>	95%	39015	90%	**64	99%
Alliant AR-Comp	<<locked>>	88%	38392	88%	**38	100%
Alliant Reloder- TS 15.5	<<locked>>	95%	39117	90%	**54	96%
[Alliant Reloder-15]*	<<locked>>	92%	38769	89%	**41	94%
[Alliant Reloder-17]*	<<locked>>	97%	36564	84%	**44	93%
[Baschieri & Pellagri 107]*	<<locked>>	88%	38653	89%	**21	93%
Hodgdon BL-C2	<<locked>>	88%	38957	90%	**64	96%
Hodgdon Benchmark	<<locked>>	84%	38827	89%	**52	97%
[Hodgdon CFE223]*	<<locked>>	93%	38798	89%	**51	92%
Hodgdon H322	<<locked>>	85%	38943	89%	**18	99%
[Hodgdon H380]*	<<locked>>	94%	38957	90%	**28	92%
[Hodgdon VARGET]*	<<locked>>	94%	38943	90%	**98	94%
IMR 3031 👍	<<locked>>	92%	38551	89%	**60	100%
[IMR 4064]*	<<locked>>	94%	38566	89%	**92	94%
IMR 4895	<<locked>>	91%	38812	89%	**57	95%
IMR 8208 XBR	<<locked>>	86%	38957	90%	**98	96%
Lovex D073.5	<<locked>>	83%	38798	89%	**01	97%
Lovex D073.6 👍	<<locked>>	90%	38798	89%	**51	98%
Lovex S060	<<locked>>	86%	38841	89%	**46	95%
Lovex S062	<<locked>>	92%	38740	89%	**18	96%
Norma 201	<<locked>>	89%	38696	89%	**95	96%
Norma 202	<<locked>>	89%	38754	89%	**18	99%
Norma 203B	<<locked>>	93%	38580	89%	**41	95%
[Ramshot Big Game]*	<<locked>>	92%	38783	89%	**47	94%
Ramshot Wild Boar	<<locked>>	87%	38595	89%	**24	95%
[Ramshot X-Terminator]*	<<locked>>	83%	38885	89%	**75	94%
ReloadSwiss RS 52	<<locked>>	94%	38798	89%	**83	97%
[ReloadSwiss RS 60]*	<<locked>>	97%	35795	82%	**24	94%
Rottweil R 901	<<locked>>	85%	38406	88%	**75	98%
Rottweil R 902	<<locked>>	91%	38972	90%	**92	96%
Rottweil R 903	<<locked>>	97%	37594	86%	**34	95%
[SNPE Vectan SP 11]*	<<locked>>	96%	39015	90%	**60	94%
[SNPE Vectan SP 7]*	<<locked>>	88%	38812	89%	**95	92%
SNPE Vectan SP 9	<<locked>>	89%	39088	90%	**21	95%
SNPE Vectan Tubal 3000	<<locked>>	86%	38740	89%	**36	98%
SNPE Vectan Tubal 5000	<<locked>>	93%	38551	89%	**52	99%
Shooters World Match Rifle 👍	<<locked>>	90%	38798	89%	**51	98%
Shooters World Precision	<<locked>>	92%	38740	89%	**18	96%
Somchem S321	<<locked>>	84%	38928	89%	**21	97%
Somchem S335	<<locked>>	87%	38943	90%	**62	99%
Somchem S341	<<locked>>	88%	39088	90%	**15	95%
Somchem S355	<<locked>>	96%	38885	89%	**38	95%
Vihtavuori N133	<<locked>>	89%	38841	89%	**52	100%
Vihtavuori N135	<<locked>>	97%	37347	86%	**01	100%
Vihtavuori N140	<<locked>>	91%	38972	90%	**05	99%
Vihtavuori N150	<<locked>>	97%	32953	76%	**06	95%
Vihtavuori N530	<<locked>>	85%	38711	89%	**05	96%
Vihtavuori N540 👍	<<locked>>	91%	38783	89%	**28	99%
[Winchester 6.5 StaBALL]*	<<locked>>	97%	34896	80%	**16	93%
Winchester 748	<<locked>>	85%	38972	90%	**54	97%
Winchester StaBALL Match	<<locked>>	83%	38464	88%	**28	95%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	81%	31125	72%	**60	92%
[ADI AR 2208]*	<<locked>>	86%	31256	72%	**41	90%
Accurate 2015	<<locked>>	81%	35418	81%	**16	100%
[Accurate 2200]*	<<locked>>	81%	33547	77%	**67	90%
Accurate 2495	<<locked>>	81%	29298	67%	**73	99%
Accurate 2520	<<locked>>	81%	30284	70%	**83	96%
[Accurate 4064]*	<<locked>>	81%	24685	57%	**59	94%
Alliant AR-Comp	<<locked>>	81%	31024	71%	**03	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	82%	26223	60%	**69	90%
[Alliant Reloder-15]*	<<locked>>	84%	29834	69%	**54	90%
[Alliant Reloder-17]*	<<locked>>	92%	31183	72%	**13	90%
[Baschieri & Pellagri 107]*	<<locked>>	84%	32967	76%	**06	90%
[Hodgdon BL-C2]*	<<locked>>	81%	30632	70%	**90	93%
Hodgdon Benchmark	<<locked>>	81%	35679	82%	**93	96%
[Hodgdon CFE223]*	<<locked>>	89%	34287	79%	**59	90%
Hodgdon H322	<<locked>>	81%	34635	80%	**36	99%
[Hodgdon H380]*	<<locked>>	90%	34055	78%	**39	90%
[Hodgdon VARGET]*	<<locked>>	86%	30922	71%	**34	90%
IMR 3031	<<locked>>	81%	27267	63%	**24	97%
[IMR 4064]*	<<locked>>	85%	29747	68%	**05	90%
[IMR 4895]*	<<locked>>	82%	28427	65%	**31	90%
[IMR 8208 XBR]*	<<locked>>	81%	33025	76%	**83	94%
Lovex D073.5	<<locked>>	81%	35984	83%	**49	97%
Lovex D073.6	<<locked>>	81%	28587	66%	**41	95%
[Lovex S060]*	<<locked>>	81%	32895	76%	**31	92%
[Lovex S062]*	<<locked>>	81%	27311	63%	**69	92%
[Norma 201]*	<<locked>>	81%	30516	70%	**31	93%
Norma 202	<<locked>>	81%	30240	70%	**47	96%
[Norma 203B]*	<<locked>>	83%	28326	65%	**21	90%
[Ramshot Big Game]*	<<locked>>	85%	30298	70%	**67	90%
[Ramshot Wild Boar]*	<<locked>>	81%	31633	73%	**80	92%
[Ramshot X-Terminator]*	<<locked>>	81%	36100	83%	**23	93%
[ReloadSwiss RS 52]*	<<locked>>	81%	25585	59%	**75	90%
[ReloadSwiss RS 60]*	<<locked>>	92%	30705	71%	**00	90%
Rottweil R 901	<<locked>>	81%	33997	78%	**87	97%
[Rottweil R 902]*	<<locked>>	81%	29037	67%	**88	93%
[Rottweil R 903]*	<<locked>>	86%	26223	60%	**88	90%
[SNPE Vectan SP 11]*	<<locked>>	88%	30487	70%	**73	90%
[SNPE Vectan SP 7]*	<<locked>>	85%	34693	80%	**19	90%
[SNPE Vectan SP 9]*	<<locked>>	81%	29834	69%	**31	91%
SNPE Vectan Tubal 3000	<<locked>>	81%	32619	75%	**21	97%
SNPE Vectan Tubal 5000	<<locked>>	81%	26295	60%	**03	96%
Shooters World Match Rifle	<<locked>>	81%	28587	66%	**41	95%
[Shooters World Precision]*	<<locked>>	81%	27311	63%	**69	92%
Somchem S321	<<locked>>	81%	34766	80%	**46	95%
Somchem S335	<<locked>>	81%	31734	73%	**24	98%
[Somchem S341]*	<<locked>>	81%	30400	70%	**34	91%
[Somchem S355]*	<<locked>>	85%	27238	63%	**91	90%
Vihtavuori N133	<<locked>>	81%	30385	70%	**95	99%
Vihtavuori N135	<<locked>>	81%	23134	53%	**83	96%
Vihtavuori N140	<<locked>>	81%	28326	65%	**91	96%
[Vihtavuori N150]*	<<locked>>	86%	24178	56%	**93	90%
Vihtavuori N530	<<locked>>	81%	34693	80%	**26	95%
Vihtavuori N540	<<locked>>	81%	27804	64%	**01	95%
[Winchester 6.5 StaBALL]*	<<locked>>	92%	30501	70%	**14	90%
Winchester 748	<<locked>>	81%	33881	78%	**56	96%
[Winchester StaBALL Match]*	<<locked>>	81%	35839	82%	**78	94%

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