Load data for .256 Mag. Gibbs + .257 | 87gr | Winchester Pointed Soft Point

Recommended Powder(s): ReloadSwiss RS 52

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 87gr \| Winchester Pointed Soft Point
Bullet Weight:	87gr \| 5.6g
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_B6608_C231
Last updated:	2025-01-01

Load data for 108 loads in caliber .256 Mag. Gibbs with .257 | 87gr | Winchester Pointed Soft Point bullet and 54 powders such as ReloadSwiss RS 52. 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".

Go to the bottom of the "My Account " page to set the measure system (imperial vs. metric)
No data yet
C.O.L. (Inch)
C.O.L. (mm)
Case Length (Inch)
Case Length (mm)
CaseCapacity (GoW)
Min z (%)
Min FR (%)
Max FR*
Barrel Length (Inch)
Barrel Length (cm)
Safety Buffer (%)
.
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>>	87%	44019	89%	**58	96%
Accurate 4064	<<locked>>	86%	43918	89%	**84	100%
Accurate 4350	<<locked>>	95%	44251	90%	**36	96%
Alliant Reloder- TS 15.5	<<locked>>	87%	44048	89%	**97	98%
Alliant Reloder-15	<<locked>>	85%	43656	89%	**91	96%
Alliant Reloder-16	<<locked>>	96%	44237	90%	**66	96%
Alliant Reloder-17	<<locked>>	91%	43830	89%	**86	98%
[Alliant Reloder-23]*	<<locked>>	96%	32372	66%	**61	93%
Hodgdon CFE223	<<locked>>	86%	43642	89%	**20	96%
Hodgdon H380	<<locked>>	87%	43816	89%	**81	95%
[Hodgdon H414]*	<<locked>>	90%	44193	90%	**33	92%
Hodgdon Hybrid 100V	<<locked>>	97%	41814	85%	**68	97%
Hodgdon LVR	<<locked>>	92%	43511	88%	**14	95%
Hodgdon VARGET	<<locked>>	87%	43511	88%	**48	96%
Hodgdon TrailBoss	<<locked>>	96%	33156	67%	**21	100%
IMR 3031	<<locked>>	85%	44222	90%	**14	100%
IMR 4064	<<locked>>	88%	44034	89%	**61	97%
[IMR 4166 Enduron]*	<<locked>>	87%	43830	89%	**99	92%
[IMR 4350]*	<<locked>>	95%	44295	90%	**54	91%
[IMR 4451 Enduron]*	<<locked>>	89%	43845	89%	**35	92%
[IMR 4831]*	<<locked>>	97%	39305	80%	**09	94%
IMR 4895	<<locked>>	84%	43859	89%	**04	97%
Lovex S062	<<locked>>	85%	43903	89%	**61	98%
[Lovex S065]*	<<locked>>	92%	44193	90%	**51	94%
[Lovex S070]*	<<locked>>	93%	44019	89%	**61	92%
Norma 203B	<<locked>>	85%	43787	89%	**94	97%
Norma URP	<<locked>>	95%	44280	90%	**36	96%
Ramshot Big Game	<<locked>>	86%	44208	90%	**20	97%
[Ramshot Hunter]*	<<locked>>	96%	44019	89%	**30	93%
ReloadSwiss RS 14	<<locked>>	97%	33939	69%	**80	100%
[ReloadSwiss RS 50]*	<<locked>>	86%	43627	88%	**35	93%
ReloadSwiss RS 52 👍	<<locked>>	86%	43584	88%	**36	99%
ReloadSwiss RS 60	<<locked>>	92%	43453	88%	**86	98%
ReloadSwiss RS 62	<<locked>>	95%	44019	89%	**53	95%
[ReloadSwiss RS 70]*	<<locked>>	95%	44295	90%	**63	94%
Rottweil R 902	<<locked>>	84%	43497	88%	**38	98%
Rottweil R 903	<<locked>>	89%	43555	88%	**87	98%
SNPE Vectan SP 11	<<locked>>	88%	44048	89%	**17	97%
SNPE Vectan Tubal 5000	<<locked>>	87%	43671	89%	**79	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	92%	44179	90%	**95	92%
[Shooters World Long Rifle]*	<<locked>>	92%	44193	90%	**51	94%
Shooters World Precision	<<locked>>	85%	43903	89%	**61	98%
Somchem S355	<<locked>>	89%	44092	89%	**81	98%
Somchem S365	<<locked>>	97%	41437	84%	**20	98%
Vihtavuori N133	<<locked>>	84%	44353	90%	**95	100%
Vihtavuori N135	<<locked>>	90%	43801	89%	**48	100%
Vihtavuori N140	<<locked>>	84%	43787	89%	**38	100%
Vihtavuori N150	<<locked>>	94%	43569	88%	**41	99%
Vihtavuori N160	<<locked>>	92%	43859	89%	**87	95%
Vihtavuori N540	<<locked>>	85%	44324	90%	**64	100%
Vihtavuori N550	<<locked>>	92%	43932	89%	**23	95%
[Vihtavuori N555]*	<<locked>>	97%	34867	71%	**59	93%
Winchester 6.5 StaBALL	<<locked>>	93%	43932	89%	**61	98%
[Winchester 760]*	<<locked>>	90%	44193	90%	**33	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2208]*	<<locked>>	81%	36666	74%	**84	94%
Accurate 4064	<<locked>>	81%	36941	75%	**27	99%
[Accurate 4350]*	<<locked>>	85%	31024	63%	**12	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	35824	73%	**00	96%
Alliant Reloder-15	<<locked>>	81%	38696	78%	**76	95%
[Alliant Reloder-16]*	<<locked>>	86%	32779	66%	**44	90%
[Alliant Reloder-17]*	<<locked>>	81%	31154	63%	**25	92%
[Alliant Reloder-23]*	<<locked>>	93%	29269	59%	**43	90%
[Hodgdon CFE223]*	<<locked>>	81%	37217	75%	**66	93%
[Hodgdon H380]*	<<locked>>	81%	36550	74%	**00	92%
[Hodgdon H414]*	<<locked>>	87%	39044	79%	**09	90%
[Hodgdon Hybrid 100V]*	<<locked>>	84%	27731	56%	**57	90%
[Hodgdon LVR]*	<<locked>>	84%	33373	68%	**44	90%
[Hodgdon VARGET]*	<<locked>>	81%	36347	74%	**74	94%
Hodgdon TrailBoss	<<locked>>	81%	26556	54%	**60	100%
IMR 3031	<<locked>>	81%	38870	79%	**99	100%
[IMR 4064]*	<<locked>>	81%	35723	72%	**51	94%
[IMR 4166 Enduron]*	<<locked>>	84%	38899	79%	**90	90%
[IMR 4350]*	<<locked>>	92%	41060	83%	**79	90%
[IMR 4451 Enduron]*	<<locked>>	86%	39711	81%	**40	90%
[IMR 4831]*	<<locked>>	89%	30603	62%	**76	90%
IMR 4895	<<locked>>	81%	39537	80%	**05	96%
Lovex S062	<<locked>>	81%	37985	77%	**20	97%
[Lovex S065]*	<<locked>>	84%	34664	70%	**12	90%
[Lovex S070]*	<<locked>>	89%	38101	77%	**20	90%
Norma 203B	<<locked>>	81%	37956	77%	**56	95%
[Norma URP]*	<<locked>>	85%	31691	64%	**08	90%
Ramshot Big Game	<<locked>>	81%	37623	76%	**69	95%
[Ramshot Hunter]*	<<locked>>	91%	37420	76%	**69	90%
ReloadSwiss RS 14	<<locked>>	81%	26527	54%	**00	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	37072	75%	**84	90%
ReloadSwiss RS 52	<<locked>>	81%	36767	75%	**66	97%
[ReloadSwiss RS 60]*	<<locked>>	81%	30255	61%	**02	92%
[ReloadSwiss RS 62]*	<<locked>>	86%	32460	66%	**54	90%
[ReloadSwiss RS 70]*	<<locked>>	89%	36143	73%	**49	90%
Rottweil R 902	<<locked>>	81%	40103	81%	**56	97%
[Rottweil R 903]*	<<locked>>	81%	33098	67%	**31	94%
[SNPE Vectan SP 11]*	<<locked>>	81%	34432	70%	**81	94%
SNPE Vectan Tubal 5000	<<locked>>	81%	35998	73%	**15	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	88%	38203	77%	**67	90%
[Shooters World Long Rifle]*	<<locked>>	84%	34664	70%	**12	90%
Shooters World Precision	<<locked>>	81%	37985	77%	**20	97%
[Somchem S355]*	<<locked>>	81%	34389	70%	**44	94%
[Somchem S365]*	<<locked>>	82%	25802	52%	**44	90%
Vihtavuori N133	<<locked>>	81%	40756	83%	**27	100%
Vihtavuori N135	<<locked>>	81%	33083	67%	**05	99%
Vihtavuori N140	<<locked>>	81%	39378	80%	**46	99%
[Vihtavuori N150]*	<<locked>>	81%	29240	59%	**84	94%
[Vihtavuori N160]*	<<locked>>	82%	31488	64%	**72	90%
Vihtavuori N540	<<locked>>	81%	39247	80%	**59	99%
[Vihtavuori N550]*	<<locked>>	83%	32227	65%	**25	90%
[Vihtavuori N555]*	<<locked>>	92%	30124	61%	**08	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	29196	59%	**61	91%
[Winchester 760]*	<<locked>>	87%	39044	79%	**09	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.