Load data for .256 Mag. Gibbs + .257 | 90gr | IBEX TRD

Recommended Powder(s): Vihtavuori N110

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 90gr \| IBEX TRD
Manufacturer SKU:	T9024
Bullet Weight:	90gr \| 5.8g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.063" \| 27.0mm
Caliber:	.256 Mag. Gibbs load data
Case Length (l3):	2.173" \| 55.2mm
Cartridge Length (C.O.L.):	3.004" \| 76.3mm
Seated Depth:	0.232" \| 5.9mm
Shank Seated Depth:	0.138" \| 3.5mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	49313 psi \| 3400 bar
LID:	LID_B7005_C231
Last updated:	2025-01-01
Recommended Twist Rate:	1:10 - 1:8

Load data for 98 loads in caliber .256 Mag. Gibbs with .257 | 90gr | IBEX TRD bullet and 49 powders such as Vihtavuori N110. 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 AR 2208	<<locked>>	84%	43700	89%	**86	97%
[Accurate 2700]*	<<locked>>	85%	43932	89%	**20	91%
[Accurate 3100]*	<<locked>>	97%	37869	77%	**94	91%
Accurate 4350	<<locked>>	92%	43627	88%	**71	96%
Alliant Reloder- TS 15.5	<<locked>>	84%	43961	89%	**25	98%
Alliant Reloder-16	<<locked>>	93%	43874	89%	**94	96%
Alliant Reloder-17	<<locked>>	89%	44092	89%	**27	98%
Alliant Reloder-23	<<locked>>	96%	35824	73%	**04	95%
[Alliant Reloder-26]*	<<locked>>	97%	40219	82%	**64	94%
Hodgdon CFE223	<<locked>>	83%	43976	89%	**61	96%
Hodgdon H380	<<locked>>	83%	43540	88%	**05	95%
[Hodgdon H414]*	<<locked>>	88%	44150	90%	**68	93%
[Hodgdon H4350]*	<<locked>>	94%	44266	90%	**95	92%
Hodgdon Hybrid 100V	<<locked>>	95%	43903	89%	**41	98%
Hodgdon LVR	<<locked>>	90%	44324	90%	**61	95%
[Hodgdon Superperformance]*	<<locked>>	90%	43888	89%	**61	91%
Hodgdon VARGET	<<locked>>	85%	44063	89%	**02	97%
Hodgdon TrailBoss	<<locked>>	96%	34113	69%	**95	100%
IMR 4064	<<locked>>	85%	44338	90%	**95	97%
[IMR 4166 Enduron]*	<<locked>>	85%	43816	89%	**43	92%
[IMR 4350]*	<<locked>>	92%	43671	89%	**92	92%
[IMR 4451 Enduron]*	<<locked>>	87%	43976	89%	**79	92%
IMR 4831	<<locked>>	97%	44063	89%	**58	96%
[Lovex S065]*	<<locked>>	89%	43758	89%	**76	94%
[Lovex S070]*	<<locked>>	91%	44164	90%	**02	93%
Norma URP	<<locked>>	92%	44280	90%	**81	96%
[Ramshot Hunter]*	<<locked>>	93%	44338	90%	**77	94%
ReloadSwiss RS 14	<<locked>>	96%	34185	69%	**31	100%
[ReloadSwiss RS 50]*	<<locked>>	83%	44034	89%	**82	93%
ReloadSwiss RS 52 👍	<<locked>>	83%	43888	89%	**77	99%
ReloadSwiss RS 60 👍	<<locked>>	89%	43758	89%	**30	99%
ReloadSwiss RS 62	<<locked>>	92%	44222	90%	**97	96%
ReloadSwiss RS 70	<<locked>>	92%	43947	89%	**00	95%
Rottweil R 903	<<locked>>	86%	43961	89%	**22	98%
[Rottweil R 907]*	<<locked>>	87%	43613	88%	**63	92%
SNPE Vectan SP 11	<<locked>>	86%	44266	90%	**64	97%
SNPE Vectan Tubal 5000	<<locked>>	84%	43830	89%	**17	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	89%	43845	89%	**30	93%
[Shooters World Long Rifle]*	<<locked>>	89%	43758	89%	**76	94%
Somchem S355	<<locked>>	85%	43526	88%	**12	98%
Somchem S365 👍	<<locked>>	95%	43801	89%	**20	99%
Vihtavuori N135	<<locked>>	87%	43540	88%	**72	100%
Vihtavuori N150	<<locked>>	91%	43947	89%	**82	99%
Vihtavuori N160	<<locked>>	90%	44019	89%	**22	96%
Vihtavuori N550	<<locked>>	89%	43918	89%	**68	96%
Vihtavuori N555	<<locked>>	97%	38943	79%	**09	95%
Winchester 6.5 StaBALL	<<locked>>	91%	44295	90%	**12	98%
[Winchester 760]*	<<locked>>	88%	44150	90%	**68	93%
[Winchester StaBALL HD]*	<<locked>>	97%	32909	67%	**77	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	39856	81%	**00	95%
[Accurate 2700]*	<<locked>>	83%	40886	83%	**41	90%
[Accurate 3100]*	<<locked>>	94%	34911	71%	**25	90%
[Accurate 4350]*	<<locked>>	81%	31096	63%	**43	91%
Alliant Reloder- TS 15.5	<<locked>>	81%	39914	81%	**33	97%
[Alliant Reloder-16]*	<<locked>>	82%	31836	65%	**49	90%
[Alliant Reloder-17]*	<<locked>>	81%	34360	70%	**67	94%
[Alliant Reloder-23]*	<<locked>>	88%	28340	57%	**61	90%
[Alliant Reloder-26]*	<<locked>>	92%	34461	70%	**94	90%
Hodgdon CFE223	<<locked>>	81%	40872	83%	**95	95%
[Hodgdon H380]*	<<locked>>	81%	40364	82%	**27	94%
[Hodgdon H414]*	<<locked>>	84%	38595	78%	**27	90%
[Hodgdon H4350]*	<<locked>>	91%	40059	81%	**07	90%
[Hodgdon Hybrid 100V]*	<<locked>>	81%	28703	58%	**35	91%
[Hodgdon LVR]*	<<locked>>	81%	33765	68%	**99	91%
[Hodgdon Superperformance]*	<<locked>>	88%	40901	83%	**92	90%
Hodgdon VARGET	<<locked>>	81%	39320	80%	**87	95%
Hodgdon TrailBoss	<<locked>>	81%	27427	56%	**34	100%
IMR 4064	<<locked>>	81%	39320	80%	**81	95%
[IMR 4166 Enduron]*	<<locked>>	81%	39131	79%	**35	91%
[IMR 4350]*	<<locked>>	89%	40495	82%	**13	90%
[IMR 4451 Enduron]*	<<locked>>	82%	38682	78%	**48	90%
[IMR 4831]*	<<locked>>	84%	30443	62%	**00	90%
[Lovex S065]*	<<locked>>	81%	35027	71%	**66	91%
[Lovex S070]*	<<locked>>	85%	37246	76%	**38	90%
[Norma URP]*	<<locked>>	81%	31111	63%	**33	90%
[Ramshot Hunter]*	<<locked>>	86%	36201	73%	**71	90%
ReloadSwiss RS 14	<<locked>>	81%	27514	56%	**73	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	40596	82%	**07	92%
ReloadSwiss RS 52	<<locked>>	81%	40567	82%	**02	98%
ReloadSwiss RS 60	<<locked>>	81%	33634	68%	**48	95%
[ReloadSwiss RS 62]*	<<locked>>	82%	31908	65%	**79	90%
[ReloadSwiss RS 70]*	<<locked>>	85%	35259	71%	**58	90%
Rottweil R 903	<<locked>>	81%	37405	76%	**71	96%
[Rottweil R 907]*	<<locked>>	85%	40408	82%	**87	90%
SNPE Vectan SP 11	<<locked>>	81%	37811	77%	**17	95%
SNPE Vectan Tubal 5000	<<locked>>	81%	39639	80%	**31	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	84%	37492	76%	**89	90%
[Shooters World Long Rifle]*	<<locked>>	81%	35027	71%	**66	91%
Somchem S355	<<locked>>	81%	38159	77%	**74	96%
[Somchem S365]*	<<locked>>	81%	28094	57%	**67	93%
Vihtavuori N135	<<locked>>	81%	37289	76%	**31	100%
Vihtavuori N150	<<locked>>	81%	32634	66%	**13	96%
[Vihtavuori N160]*	<<locked>>	81%	33576	68%	**69	92%
[Vihtavuori N550]*	<<locked>>	81%	34026	69%	**22	92%
[Vihtavuori N555]*	<<locked>>	87%	29254	59%	**20	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	32300	66%	**07	94%
[Winchester 760]*	<<locked>>	84%	38595	78%	**27	90%
[Winchester StaBALL HD]*	<<locked>>	94%	29965	61%	**56	90%

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.