Load data for .256 Mag. Gibbs + .257 | 117gr | Rhino Solid Shank

Recommended Powder(s): Alliant Reloder-16, Alliant Reloder-26, ReloadSwiss RS 62, Somchem S365, Vihtavuori N555

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 117gr \| Rhino Solid Shank
Bullet Weight:	117gr \| 7.6g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.097" \| 27.9mm
Caliber:	.256 Mag. Gibbs load data
Case Length (l3):	2.173" \| 55.2mm
Cartridge Length (C.O.L.):	3.004" \| 76.3mm
Seated Depth:	0.266" \| 6.8mm
Shank Seated Depth:	0.266" \| 6.8mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	49313 psi \| 3400 bar
LID:	LID_B5223_C231
Last updated:	2025-01-01

Load data for 106 loads in caliber .256 Mag. Gibbs with .257 | 117gr | Rhino Solid Shank bullet and 53 powders such as Alliant Reloder-16, Alliant Reloder-26, ReloadSwiss RS 62, Somchem S365, Vihtavuori N555. 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 2209]*	<<locked>>	93%	43918	89%	**56	94%
[ADI AR 2213]*	<<locked>>	96%	43888	89%	**72	92%
Accurate 3100	<<locked>>	97%	43279	88%	**26	97%
Accurate 4350	<<locked>>	88%	44179	90%	**62	99%
Alliant Reloder-16 👍	<<locked>>	89%	44309	90%	**99	99%
Alliant Reloder-17	<<locked>>	85%	43976	89%	**12	100%
[Alliant Reloder-19]*	<<locked>>	93%	43816	89%	**56	94%
[Alliant Reloder-22]*	<<locked>>	97%	43482	88%	**95	94%
Alliant Reloder-23	<<locked>>	97%	40901	83%	**46	99%
Alliant Reloder-25	<<locked>>	96%	35563	72%	**28	95%
Alliant Reloder-26 👍	<<locked>>	96%	44179	90%	**87	99%
Hodgdon H414	<<locked>>	83%	43555	88%	**59	96%
Hodgdon H4350	<<locked>>	90%	43627	88%	**00	95%
[Hodgdon H4831 SC]*	<<locked>>	95%	44092	89%	**33	91%
Hodgdon Hybrid 100V	<<locked>>	91%	43758	89%	**30	100%
Hodgdon LVR	<<locked>>	85%	43439	88%	**46	98%
Hodgdon Superperformance	<<locked>>	87%	44295	90%	**99	96%
Hodgdon TrailBoss	<<locked>>	96%	34418	70%	**65	100%
IMR 4350	<<locked>>	88%	44048	89%	**03	96%
IMR 4451 Enduron	<<locked>>	84%	44251	90%	**90	96%
IMR 4831	<<locked>>	93%	44295	90%	**46	99%
[IMR 4955 Enduron]*	<<locked>>	95%	43830	89%	**97	92%
[IMR 7828 SSC]*	<<locked>>	96%	44309	90%	**95	92%
Lovex S065	<<locked>>	86%	44295	90%	**90	98%
Lovex S070	<<locked>>	87%	43613	88%	**97	96%
Lovex S071	<<locked>>	96%	35491	72%	**62	95%
[Norma 204]*	<<locked>>	88%	43787	89%	**33	94%
Norma MRP	<<locked>>	96%	43830	89%	**41	96%
Norma URP	<<locked>>	88%	43584	88%	**53	99%
Ramshot Hunter	<<locked>>	89%	43729	89%	**66	97%
[Ramshot Magnum]*	<<locked>>	97%	41974	85%	**40	94%
ReloadSwiss RS 14	<<locked>>	96%	34606	70%	**98	100%
ReloadSwiss RS 60	<<locked>>	86%	44353	90%	**44	100%
ReloadSwiss RS 62 👍	<<locked>>	88%	44135	90%	**89	99%
ReloadSwiss RS 70	<<locked>>	89%	44353	90%	**18	98%
[Rottweil R 904]*	<<locked>>	91%	43787	89%	**00	93%
[Rottweil R 905]*	<<locked>>	94%	43569	88%	**59	94%
Rottweil R 907	<<locked>>	85%	44324	90%	**90	96%
SNPE Vectan Tubal 7000	<<locked>>	86%	44324	90%	**51	96%
Shooters World Long Rifle	<<locked>>	86%	44295	90%	**90	98%
[Somchem S361]*	<<locked>>	91%	43685	89%	**67	91%
Somchem S365 👍	<<locked>>	91%	44121	89%	**05	100%
Somchem S385	<<locked>>	94%	44179	90%	**43	96%
Vihtavuori N135	<<locked>>	83%	43671	89%	**41	100%
Vihtavuori N150	<<locked>>	87%	43845	89%	**71	100%
Vihtavuori N160	<<locked>>	86%	44367	90%	**26	99%
[Vihtavuori N165]*	<<locked>>	97%	41046	83%	**64	94%
Vihtavuori N550	<<locked>>	85%	44193	90%	**59	98%
Vihtavuori N555 👍	<<locked>>	96%	44222	90%	**12	99%
[Vihtavuori N560]*	<<locked>>	97%	43642	89%	**08	92%
Winchester 6.5 StaBALL	<<locked>>	87%	44150	90%	**13	100%
Winchester 760	<<locked>>	83%	43555	88%	**59	96%
Winchester StaBALL HD	<<locked>>	97%	33489	68%	**69	100%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2209]*	<<locked>>	86%	35607	72%	**62	90%
[ADI AR 2213]*	<<locked>>	94%	40393	82%	**87	90%
[Accurate 3100]*	<<locked>>	84%	27456	56%	**49	90%
Accurate 4350	<<locked>>	81%	34563	70%	**56	96%
Alliant Reloder-16	<<locked>>	81%	34563	70%	**79	96%
Alliant Reloder-17	<<locked>>	81%	38798	79%	**00	99%
[Alliant Reloder-19]*	<<locked>>	85%	34360	70%	**36	90%
[Alliant Reloder-22]*	<<locked>>	90%	34664	70%	**89	90%
[Alliant Reloder-23]*	<<locked>>	81%	25048	51%	**10	93%
[Alliant Reloder-25]*	<<locked>>	89%	28660	58%	**21	90%
[Alliant Reloder-26]*	<<locked>>	82%	26832	54%	**11	90%
Hodgdon H414	<<locked>>	81%	40089	81%	**80	95%
[Hodgdon H4350]*	<<locked>>	81%	33504	68%	**64	91%
[Hodgdon H4831 SC]*	<<locked>>	92%	40712	83%	**54	90%
Hodgdon Hybrid 100V	<<locked>>	81%	31792	64%	**70	97%
Hodgdon LVR	<<locked>>	81%	37550	76%	**15	96%
[Hodgdon Superperformance]*	<<locked>>	81%	35955	73%	**08	93%
Hodgdon TrailBoss	<<locked>>	85%	29196	59%	**54	100%
[IMR 4350]*	<<locked>>	81%	35114	71%	**07	92%
IMR 4451 Enduron	<<locked>>	81%	40828	83%	**15	95%
[IMR 4831]*	<<locked>>	81%	30226	61%	**31	94%
[IMR 4955 Enduron]*	<<locked>>	91%	39784	81%	**08	90%
[IMR 7828 SSC]*	<<locked>>	93%	40016	81%	**00	90%
Lovex S065	<<locked>>	81%	38421	78%	**75	96%
[Lovex S070]*	<<locked>>	81%	36318	74%	**36	94%
[Lovex S071]*	<<locked>>	88%	27456	56%	**49	90%
[Norma 204]*	<<locked>>	81%	34911	71%	**36	90%
[Norma MRP]*	<<locked>>	86%	31589	64%	**33	90%
Norma URP	<<locked>>	81%	34476	70%	**56	96%
[Ramshot Hunter]*	<<locked>>	81%	33576	68%	**36	93%
[Ramshot Magnum]*	<<locked>>	91%	33953	69%	**46	90%
ReloadSwiss RS 14	<<locked>>	81%	27717	56%	**50	100%
ReloadSwiss RS 60	<<locked>>	81%	37623	76%	**97	100%
ReloadSwiss RS 62	<<locked>>	81%	34229	69%	**72	96%
ReloadSwiss RS 70	<<locked>>	81%	33953	69%	**72	95%
[Rottweil R 904]*	<<locked>>	87%	37942	77%	**72	90%
[Rottweil R 905]*	<<locked>>	86%	33852	69%	**30	90%
[Rottweil R 907]*	<<locked>>	81%	39233	80%	**82	94%
[SNPE Vectan Tubal 7000]*	<<locked>>	81%	37652	76%	**13	94%
Shooters World Long Rifle	<<locked>>	81%	38421	78%	**75	96%
[Somchem S361]*	<<locked>>	88%	40321	82%	**95	90%
Somchem S365	<<locked>>	81%	31183	63%	**13	98%
[Somchem S385]*	<<locked>>	84%	31633	64%	**57	90%
Vihtavuori N135	<<locked>>	81%	40886	83%	**89	100%
Vihtavuori N150	<<locked>>	81%	36143	73%	**13	99%
Vihtavuori N160	<<locked>>	81%	37492	76%	**85	97%
[Vihtavuori N165]*	<<locked>>	90%	32619	66%	**64	90%
Vihtavuori N550	<<locked>>	81%	38232	78%	**38	97%
[Vihtavuori N555]*	<<locked>>	81%	26861	54%	**88	93%
[Vihtavuori N560]*	<<locked>>	94%	40205	82%	**23	90%
Winchester 6.5 StaBALL	<<locked>>	81%	35418	72%	**30	98%
Winchester 760	<<locked>>	81%	40089	81%	**80	95%
[Winchester StaBALL HD]*	<<locked>>	83%	23192	47%	**87	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.

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