Load data for .256 Mag. Gibbs + .257 | 100gr | Peregrine VLR-4

Recommended Powder(s): Alliant Reloder- TS 15.5, Alliant Reloder-17, Hodgdon Hybrid 100V, ReloadSwiss RS 60, Somchem S365

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 100gr \| Peregrine VLR-4
Bullet Weight:	100gr \| 6.5g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.240" \| 31.5mm
Caliber:	.256 Mag. Gibbs load data
Case Length (l3):	2.173" \| 55.2mm
Cartridge Length (C.O.L.):	3.004" \| 76.3mm
Seated Depth:	0.409" \| 10.4mm
Shank Seated Depth:	0.192" \| 4.9mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	49313 psi \| 3400 bar
LID:	LID_B8048_C231
Last updated:	2025-01-01
Recommended Twist Rate:	1:8 - 1:7

Load data for 112 loads in caliber .256 Mag. Gibbs with .257 | 100gr | Peregrine VLR-4 bullet and 56 powders such as Alliant Reloder- TS 15.5, Alliant Reloder-17, Hodgdon Hybrid 100V, ReloadSwiss RS 60, Somchem S365. 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 2208	<<locked>>	85%	43700	89%	**67	97%
[Accurate 2700]*	<<locked>>	86%	43555	88%	**92	93%
[Accurate 3100]*	<<locked>>	97%	35041	71%	**26	92%
Accurate 4064	<<locked>>	85%	44208	90%	**97	100%
Accurate 4350	<<locked>>	93%	44135	90%	**59	97%
Alliant Reloder- TS 15.5 👍	<<locked>>	86%	44019	89%	**10	99%
Alliant Reloder-16	<<locked>>	94%	43787	89%	**66	97%
Alliant Reloder-17 👍	<<locked>>	90%	44077	89%	**05	99%
Alliant Reloder-23	<<locked>>	97%	34519	70%	**69	96%
[Alliant Reloder-26]*	<<locked>>	97%	37666	76%	**97	94%
Hodgdon CFE223	<<locked>>	84%	43468	88%	**36	97%
Hodgdon H380	<<locked>>	85%	43526	88%	**87	96%
[Hodgdon H414]*	<<locked>>	88%	43569	88%	**36	94%
[Hodgdon H4350]*	<<locked>>	95%	44077	89%	**84	93%
Hodgdon Hybrid 100V 👍	<<locked>>	96%	43482	88%	**20	99%
Hodgdon LVR	<<locked>>	91%	44121	89%	**43	96%
[Hodgdon Superperformance]*	<<locked>>	91%	43801	89%	**56	93%
Hodgdon VARGET	<<locked>>	86%	44237	90%	**81	98%
Hodgdon TrailBoss	<<locked>>	97%	33924	69%	**83	100%
IMR 3031	<<locked>>	83%	44324	90%	**13	100%
IMR 4064	<<locked>>	86%	43642	89%	**64	98%
[IMR 4166 Enduron]*	<<locked>>	86%	44222	90%	**41	94%
[IMR 4350]*	<<locked>>	93%	44135	90%	**81	93%
[IMR 4451 Enduron]*	<<locked>>	88%	43772	89%	**58	94%
IMR 4831	<<locked>>	97%	41742	85%	**94	97%
Lovex S062	<<locked>>	84%	43642	89%	**74	99%
Lovex S065	<<locked>>	90%	43903	89%	**64	95%
[Lovex S070]*	<<locked>>	92%	44338	90%	**94	94%
Norma 203B	<<locked>>	84%	43627	88%	**04	98%
Norma URP	<<locked>>	94%	44063	89%	**49	97%
Ramshot Big Game	<<locked>>	84%	44222	90%	**33	98%
Ramshot Hunter	<<locked>>	94%	44309	90%	**59	95%
ReloadSwiss RS 14	<<locked>>	96%	33939	69%	**23	100%
ReloadSwiss RS 50	<<locked>>	85%	44135	89%	**71	95%
ReloadSwiss RS 52	<<locked>>	84%	43584	88%	**43	99%
ReloadSwiss RS 60 👍	<<locked>>	90%	43743	89%	**12	99%
ReloadSwiss RS 62	<<locked>>	94%	43990	89%	**76	97%
ReloadSwiss RS 70	<<locked>>	93%	43830	89%	**79	96%
Rottweil R 903	<<locked>>	88%	43685	89%	**07	99%
[Rottweil R 907]*	<<locked>>	89%	43685	89%	**51	93%
SNPE Vectan SP 11	<<locked>>	87%	44034	89%	**40	98%
SNPE Vectan Tubal 5000	<<locked>>	86%	43932	89%	**95	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	91%	44367	90%	**28	94%
Shooters World Long Rifle	<<locked>>	90%	43903	89%	**64	95%
Shooters World Precision	<<locked>>	84%	43642	89%	**74	99%
Somchem S355	<<locked>>	87%	43468	88%	**87	98%
Somchem S365 👍	<<locked>>	97%	44208	90%	**05	100%
[Somchem S385]*	<<locked>>	97%	40814	83%	**44	92%
Vihtavuori N135	<<locked>>	88%	44048	89%	**54	100%
Vihtavuori N150	<<locked>>	92%	43729	89%	**67	99%
Vihtavuori N160	<<locked>>	91%	43976	89%	**10	97%
Vihtavuori N550	<<locked>>	91%	44208	90%	**46	97%
Vihtavuori N555	<<locked>>	96%	36390	74%	**31	95%
Winchester 6.5 StaBALL	<<locked>>	92%	44382	90%	**97	99%
[Winchester 760]*	<<locked>>	88%	43569	88%	**36	94%
[Winchester StaBALL HD]*	<<locked>>	97%	30632	62%	**10	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	38464	78%	**49	96%
[Accurate 2700]*	<<locked>>	82%	37666	76%	**64	90%
[Accurate 3100]*	<<locked>>	94%	32068	65%	**48	90%
Accurate 4064	<<locked>>	81%	38725	79%	**82	100%
[Accurate 4350]*	<<locked>>	81%	28413	58%	**62	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	38029	77%	**79	98%
[Alliant Reloder-16]*	<<locked>>	81%	29327	59%	**79	90%
Alliant Reloder-17	<<locked>>	81%	32663	66%	**17	95%
[Alliant Reloder-23]*	<<locked>>	88%	26339	53%	**00	90%
[Alliant Reloder-26]*	<<locked>>	92%	31879	65%	**20	90%
Hodgdon CFE223	<<locked>>	81%	39015	79%	**35	96%
Hodgdon H380	<<locked>>	81%	38247	78%	**76	95%
[Hodgdon H414]*	<<locked>>	82%	35215	71%	**36	90%
[Hodgdon H4350]*	<<locked>>	90%	37260	76%	**30	90%
[Hodgdon Hybrid 100V]*	<<locked>>	81%	26876	55%	**87	92%
[Hodgdon LVR]*	<<locked>>	81%	31850	65%	**44	91%
[Hodgdon Superperformance]*	<<locked>>	87%	37724	77%	**05	90%
Hodgdon VARGET	<<locked>>	81%	38087	77%	**40	96%
Hodgdon TrailBoss	<<locked>>	81%	26905	55%	**26	100%
IMR 3031	<<locked>>	81%	41408	84%	**64	100%
IMR 4064	<<locked>>	81%	37434	76%	**23	96%
[IMR 4166 Enduron]*	<<locked>>	81%	37304	76%	**77	91%
[IMR 4350]*	<<locked>>	88%	37289	76%	**26	90%
[IMR 4451 Enduron]*	<<locked>>	81%	35505	72%	**57	90%
[IMR 4831]*	<<locked>>	84%	27499	56%	**20	90%
Lovex S062	<<locked>>	81%	40089	81%	**89	98%
[Lovex S065]*	<<locked>>	81%	32750	66%	**02	91%
[Lovex S070]*	<<locked>>	84%	34432	70%	**64	90%
Norma 203B	<<locked>>	81%	40205	82%	**25	97%
[Norma URP]*	<<locked>>	81%	29225	59%	**75	91%
Ramshot Big Game	<<locked>>	81%	39624	80%	**31	97%
[Ramshot Hunter]*	<<locked>>	85%	33214	67%	**87	90%
ReloadSwiss RS 14	<<locked>>	81%	26948	55%	**62	100%
[ReloadSwiss RS 50]*	<<locked>>	81%	38957	79%	**59	93%
ReloadSwiss RS 52	<<locked>>	81%	38827	79%	**35	99%
ReloadSwiss RS 60	<<locked>>	81%	31908	65%	**07	96%
[ReloadSwiss RS 62]*	<<locked>>	82%	29196	59%	**95	90%
[ReloadSwiss RS 70]*	<<locked>>	85%	32677	66%	**87	90%
Rottweil R 903	<<locked>>	81%	35070	71%	**03	96%
[Rottweil R 907]*	<<locked>>	84%	36956	75%	**90	90%
SNPE Vectan SP 11	<<locked>>	81%	36289	74%	**59	96%
SNPE Vectan Tubal 5000	<<locked>>	81%	37666	76%	**74	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	83%	34722	70%	**18	90%
[Shooters World Long Rifle]*	<<locked>>	81%	32750	66%	**02	91%
Shooters World Precision	<<locked>>	81%	40089	81%	**89	98%
Somchem S355	<<locked>>	81%	35940	73%	**10	96%
[Somchem S365]*	<<locked>>	81%	26266	53%	**16	93%
[Somchem S385]*	<<locked>>	94%	37434	76%	**72	90%
Vihtavuori N135	<<locked>>	81%	35157	71%	**71	100%
Vihtavuori N150	<<locked>>	81%	30719	62%	**62	96%
[Vihtavuori N160]*	<<locked>>	81%	31749	64%	**18	92%
[Vihtavuori N550]*	<<locked>>	81%	32068	65%	**54	92%
[Vihtavuori N555]*	<<locked>>	87%	26861	54%	**52	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	30719	62%	**62	94%
[Winchester 760]*	<<locked>>	82%	35215	71%	**36	90%
[Winchester StaBALL HD]*	<<locked>>	94%	27702	56%	**92	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.

<<locked>>... you need to buy an access license to unlock the data