Load data for .256 Mag. Gibbs + .257 | 60gr | Winchester Hollow Point

Recommended Powder(s): Accurate 2495, IMR 3031

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 60gr \| Winchester Hollow Point
Bullet Weight:	60gr \| 3.9g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.000" \| 25.4mm
Caliber:	.256 Mag. Gibbs load data
Case Length (l3):	2.173" \| 55.2mm
Cartridge Length (C.O.L.):	3.004" \| 76.3mm
Seated Depth:	0.169" \| 4.3mm
Shank Seated Depth:	0.169" \| 4.3mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	49313 psi \| 3400 bar
LID:	LID_B6606_C231
Last updated:	2025-01-01

Load data for 112 loads in caliber .256 Mag. Gibbs with .257 | 60gr | Winchester Hollow Point bullet and 56 powders such as Accurate 2495, IMR 3031. 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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Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
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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 2206H]*	<<locked>>	90%	43758	89%	**33	92%
[ADI AR 2208]*	<<locked>>	95%	44324	90%	**20	92%
Accurate 2015	<<locked>>	86%	44063	89%	**17	99%
[Accurate 2230]*	<<locked>>	84%	43714	89%	**74	93%
Accurate 2460	<<locked>>	84%	44251	90%	**14	95%
Accurate 2495 👍	<<locked>>	91%	44164	90%	**93	99%
Accurate 2520	<<locked>>	89%	44019	89%	**53	96%
Accurate 4064	<<locked>>	96%	43729	89%	**73	98%
Alliant AR-Comp	<<locked>>	89%	43685	89%	**02	100%
[Alliant Reloder- TS 15.5]*	<<locked>>	96%	43888	89%	**53	94%
[Alliant Reloder-15]*	<<locked>>	93%	43758	89%	**43	91%
[Hodgdon BL-C2]*	<<locked>>	88%	43163	88%	**43	94%
Hodgdon Benchmark	<<locked>>	86%	43656	89%	**61	95%
Hodgdon H322	<<locked>>	86%	43511	88%	**60	98%
Hodgdon TrailBoss	<<locked>>	96%	31444	64%	**79	100%
IMR 3031 👍	<<locked>>	94%	44150	90%	**38	99%
[IMR 4064]*	<<locked>>	96%	44222	90%	**04	92%
IMR 4198	<<locked>>	83%	44208	90%	**27	100%
[IMR 4895]*	<<locked>>	93%	43758	89%	**79	93%
[IMR 8208 XBR]*	<<locked>>	88%	43482	88%	**04	94%
Lovex D073.4	<<locked>>	83%	44367	90%	**17	95%
Lovex D073.5	<<locked>>	84%	43874	89%	**07	95%
Lovex D073.6	<<locked>>	91%	44019	89%	**53	96%
[Lovex S060]*	<<locked>>	89%	44367	90%	**71	93%
[Lovex S062]*	<<locked>>	94%	44338	90%	**37	94%
[Norma 201]*	<<locked>>	91%	44121	89%	**27	94%
Norma 202	<<locked>>	90%	43932	89%	**47	97%
[Norma 203B]*	<<locked>>	94%	43932	89%	**53	92%
[Ramshot Big Game]*	<<locked>>	94%	44135	89%	**56	92%
[Ramshot Wild Boar]*	<<locked>>	89%	44005	89%	**30	92%
[Ramshot X-Terminator]*	<<locked>>	85%	44063	89%	**71	92%
ReloadSwiss RS 14	<<locked>>	97%	31850	65%	**41	100%
ReloadSwiss RS 40	<<locked>>	84%	43337	88%	**10	96%
ReloadSwiss RS 52	<<locked>>	95%	43816	89%	**06	95%
Rottweil R 901	<<locked>>	87%	43584	88%	**14	97%
[Rottweil R 902]*	<<locked>>	92%	43627	88%	**04	94%
[Rottweil R 903]*	<<locked>>	97%	40973	83%	**74	92%
[SNPE Vectan SP 11]*	<<locked>>	97%	44019	89%	**56	92%
[SNPE Vectan SP 9]*	<<locked>>	91%	43903	89%	**30	92%
SNPE Vectan Tubal 3000	<<locked>>	89%	44005	89%	**61	97%
SNPE Vectan Tubal 5000	<<locked>>	95%	44092	89%	**58	98%
Shooters World Match Rifle	<<locked>>	91%	44019	89%	**53	96%
[Shooters World Precision]*	<<locked>>	94%	44338	90%	**37	94%
Somchem S321	<<locked>>	86%	43845	89%	**33	95%
Somchem S335	<<locked>>	89%	43801	89%	**65	98%
[Somchem S341]*	<<locked>>	90%	44251	90%	**07	92%
[Somchem S355]*	<<locked>>	96%	42235	86%	**94	93%
Vihtavuori N130	<<locked>>	86%	43830	89%	**71	100%
Vihtavuori N133	<<locked>>	92%	44150	90%	**81	99%
Vihtavuori N135	<<locked>>	97%	40248	82%	**58	98%
Vihtavuori N140	<<locked>>	93%	44367	90%	**33	98%
[Vihtavuori N150]*	<<locked>>	97%	36013	73%	**01	92%
[Vihtavuori N530]*	<<locked>>	87%	44266	90%	**40	94%
Vihtavuori N540	<<locked>>	93%	43932	89%	**37	97%
Winchester 748	<<locked>>	86%	43627	88%	**73	95%
[Winchester StaBALL Match]*	<<locked>>	84%	43888	89%	**33	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	86%	38667	78%	**02	90%
[ADI AR 2208]*	<<locked>>	93%	40915	83%	**32	90%
Accurate 2015	<<locked>>	81%	37318	76%	**53	98%
[Accurate 2230]*	<<locked>>	81%	39363	80%	**69	92%
[Accurate 2460]*	<<locked>>	81%	39030	79%	**86	94%
Accurate 2495	<<locked>>	81%	31372	64%	**51	96%
[Accurate 2520]*	<<locked>>	81%	32489	66%	**45	92%
[Accurate 4064]*	<<locked>>	82%	27064	55%	**71	90%
Alliant AR-Comp	<<locked>>	81%	32750	66%	**14	99%
[Alliant Reloder- TS 15.5]*	<<locked>>	90%	35520	72%	**33	90%
[Alliant Reloder-15]*	<<locked>>	91%	40176	81%	**61	90%
[Hodgdon BL-C2]*	<<locked>>	82%	34447	70%	**10	90%
[Hodgdon Benchmark]*	<<locked>>	81%	37144	75%	**91	92%
Hodgdon H322	<<locked>>	81%	36637	74%	**73	96%
Hodgdon TrailBoss	<<locked>>	81%	25005	51%	**95	100%
[IMR 3031]*	<<locked>>	81%	28543	58%	**63	93%
[IMR 4064]*	<<locked>>	94%	40509	82%	**19	90%
IMR 4198	<<locked>>	81%	41524	84%	**55	100%
[IMR 4895]*	<<locked>>	89%	38754	79%	**32	90%
[IMR 8208 XBR]*	<<locked>>	81%	34737	70%	**61	90%
[Lovex D073.4]*	<<locked>>	81%	40901	83%	**32	94%
[Lovex D073.5]*	<<locked>>	81%	38682	78%	**76	94%
[Lovex D073.6]*	<<locked>>	81%	30327	62%	**73	90%
[Lovex S060]*	<<locked>>	84%	37869	77%	**04	90%
[Lovex S062]*	<<locked>>	86%	33866	69%	**51	90%
[Norma 201]*	<<locked>>	83%	34403	70%	**58	90%
[Norma 202]*	<<locked>>	81%	31923	65%	**05	92%
[Norma 203B]*	<<locked>>	90%	38595	78%	**15	90%
[Ramshot Big Game]*	<<locked>>	91%	39900	81%	**48	90%
[Ramshot Wild Boar]*	<<locked>>	85%	38928	79%	**09	90%
[Ramshot X-Terminator]*	<<locked>>	82%	39088	79%	**50	90%
ReloadSwiss RS 14	<<locked>>	81%	24714	50%	**38	100%
[ReloadSwiss RS 40]*	<<locked>>	81%	39175	79%	**99	94%
[ReloadSwiss RS 52]*	<<locked>>	87%	33446	68%	**07	90%
[Rottweil R 901]*	<<locked>>	81%	35462	72%	**91	94%
[Rottweil R 902]*	<<locked>>	85%	34621	70%	**51	90%
[Rottweil R 903]*	<<locked>>	93%	36013	73%	**43	90%
[SNPE Vectan SP 11]*	<<locked>>	94%	39784	81%	**48	90%
[SNPE Vectan SP 9]*	<<locked>>	86%	38130	77%	**79	90%
[SNPE Vectan Tubal 3000]*	<<locked>>	81%	34084	69%	**92	93%
[SNPE Vectan Tubal 5000]*	<<locked>>	81%	27485	56%	**86	91%
[Shooters World Match Rifle]*	<<locked>>	81%	30327	62%	**73	90%
[Shooters World Precision]*	<<locked>>	86%	33866	69%	**51	90%
[Somchem S321]*	<<locked>>	81%	37362	76%	**56	92%
Somchem S335	<<locked>>	81%	33678	68%	**96	95%
[Somchem S341]*	<<locked>>	86%	39146	79%	**69	90%
[Somchem S355]*	<<locked>>	93%	37043	75%	**63	90%
Vihtavuori N130	<<locked>>	81%	37826	77%	**23	99%
Vihtavuori N133	<<locked>>	81%	31357	64%	**46	96%
[Vihtavuori N135]*	<<locked>>	81%	24163	49%	**43	91%
[Vihtavuori N140]*	<<locked>>	81%	29631	60%	**17	92%
[Vihtavuori N150]*	<<locked>>	94%	33083	67%	**09	90%
[Vihtavuori N530]*	<<locked>>	81%	36695	74%	**50	92%
[Vihtavuori N540]*	<<locked>>	81%	29573	60%	**23	91%
[Winchester 748]*	<<locked>>	81%	35955	73%	**66	92%
[Winchester StaBALL Match]*	<<locked>>	81%	38740	79%	**09	91%

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.