Load data for .256 Mag. Gibbs + .257 | 87gr | Peregrine VLR-4

Recommended Powder(s): Accurate 4064, ReloadSwiss RS 52

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 87gr \| Peregrine VLR-4
Bullet Weight:	87gr \| 5.6g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.126" \| 28.6mm
Caliber:	.256 Mag. Gibbs load data
Case Length (l3):	2.173" \| 55.2mm
Cartridge Length (C.O.L.):	2.960" \| 75.2mm
Seated Depth:	0.339" \| 8.6mm
Shank Seated Depth:	0.122" \| 3.1mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	49313 psi \| 3400 bar
LID:	LID_B8045_C231
Last updated:	2025-01-01
Recommended Twist Rate:	1:9 - 1:8

Load data for 112 loads in caliber .256 Mag. Gibbs with .257 | 87gr | Peregrine VLR-4 bullet and 56 powders such as Accurate 4064, 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".

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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>>	88%	44353	90%	**61	96%
Accurate 4064 👍	<<locked>>	88%	43801	89%	**81	100%
Accurate 4350	<<locked>>	96%	43627	88%	**27	95%
Alliant Reloder- TS 15.5	<<locked>>	89%	44266	90%	**91	98%
Alliant Reloder-15	<<locked>>	86%	43845	89%	**94	96%
Alliant Reloder-16	<<locked>>	97%	44280	90%	**56	96%
Alliant Reloder-17	<<locked>>	92%	43613	88%	**66	97%
Baschieri & Pellagri 107	<<locked>>	83%	43888	89%	**77	96%
Hodgdon CFE223	<<locked>>	87%	43801	89%	**20	96%
Hodgdon H380	<<locked>>	88%	44266	90%	**81	95%
[Hodgdon H414]*	<<locked>>	91%	43772	89%	**07	92%
Hodgdon Hybrid 100V	<<locked>>	97%	40625	82%	**25	96%
Hodgdon LVR	<<locked>>	94%	44005	89%	**17	95%
Hodgdon VARGET	<<locked>>	88%	43990	89%	**54	96%
Hodgdon TrailBoss	<<locked>>	96%	33040	67%	**11	100%
IMR 3031	<<locked>>	86%	43816	89%	**07	100%
IMR 4064	<<locked>>	89%	44338	90%	**51	96%
[IMR 4166 Enduron]*	<<locked>>	89%	43859	89%	**95	92%
[IMR 4451 Enduron]*	<<locked>>	90%	43656	89%	**22	92%
[IMR 4831]*	<<locked>>	97%	37492	76%	**63	93%
IMR 4895	<<locked>>	85%	44019	89%	**07	97%
Lovex D073.6	<<locked>>	84%	43772	89%	**74	99%
Lovex S062	<<locked>>	87%	44077	89%	**54	98%
[Lovex S065]*	<<locked>>	93%	43801	89%	**35	94%
[Lovex S070]*	<<locked>>	95%	43947	89%	**54	92%
Norma 201	<<locked>>	84%	44179	90%	**51	98%
Norma 203B	<<locked>>	87%	43990	89%	**00	97%
Norma URP	<<locked>>	96%	43395	88%	**17	95%
Ramshot Big Game	<<locked>>	87%	43714	89%	**04	97%
[Ramshot Hunter]*	<<locked>>	97%	43642	88%	**07	93%
ReloadSwiss RS 14	<<locked>>	96%	33388	68%	**57	100%
[ReloadSwiss RS 50]*	<<locked>>	87%	43700	89%	**28	93%
ReloadSwiss RS 52 👍	<<locked>>	87%	43874	89%	**36	99%
ReloadSwiss RS 60	<<locked>>	93%	44179	90%	**99	98%
ReloadSwiss RS 62	<<locked>>	96%	43395	88%	**33	95%
[ReloadSwiss RS 70]*	<<locked>>	96%	44121	89%	**46	94%
Rottweil R 902	<<locked>>	85%	43671	89%	**28	98%
Rottweil R 903	<<locked>>	91%	44266	90%	**97	98%
SNPE Vectan SP 11	<<locked>>	89%	43555	88%	**04	97%
SNPE Vectan SP 9	<<locked>>	84%	43859	89%	**61	97%
SNPE Vectan Tubal 5000	<<locked>>	88%	43511	88%	**72	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	93%	43903	89%	**89	92%
[Shooters World Long Rifle]*	<<locked>>	93%	43801	89%	**35	94%
Shooters World Match Rifle	<<locked>>	84%	43772	89%	**74	99%
Shooters World Precision	<<locked>>	87%	44077	89%	**54	98%
Somchem S355	<<locked>>	90%	43468	88%	**61	97%
Somchem S365	<<locked>>	97%	39146	79%	**64	98%
Vihtavuori N133	<<locked>>	85%	44121	89%	**82	100%
Vihtavuori N135	<<locked>>	91%	43584	88%	**31	100%
Vihtavuori N140	<<locked>>	85%	43888	89%	**38	100%
Vihtavuori N150	<<locked>>	95%	43990	89%	**45	99%
Vihtavuori N160	<<locked>>	93%	43918	89%	**84	95%
Vihtavuori N540	<<locked>>	85%	43656	89%	**54	100%
Vihtavuori N550	<<locked>>	93%	43569	88%	**14	95%
Winchester 6.5 StaBALL	<<locked>>	95%	44382	90%	**58	98%
[Winchester 760]*	<<locked>>	91%	43772	89%	**07	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2208]*	<<locked>>	81%	35418	72%	**44	93%
Accurate 4064	<<locked>>	81%	35288	72%	**81	98%
[Accurate 4350]*	<<locked>>	87%	31502	64%	**18	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	34389	70%	**58	95%
[Alliant Reloder-15]*	<<locked>>	81%	36999	75%	**27	94%
[Alliant Reloder-16]*	<<locked>>	88%	33243	67%	**54	90%
[Alliant Reloder-17]*	<<locked>>	81%	29979	61%	**79	91%
Baschieri & Pellagri 107	<<locked>>	81%	40480	82%	**09	95%
[Hodgdon CFE223]*	<<locked>>	81%	35650	72%	**17	92%
[Hodgdon H380]*	<<locked>>	81%	35128	71%	**58	91%
[Hodgdon H414]*	<<locked>>	88%	39494	80%	**12	90%
[Hodgdon Hybrid 100V]*	<<locked>>	86%	28413	58%	**74	90%
[Hodgdon LVR]*	<<locked>>	86%	34287	70%	**64	90%
[Hodgdon VARGET]*	<<locked>>	81%	34969	71%	**31	93%
Hodgdon TrailBoss	<<locked>>	81%	26223	53%	**47	100%
IMR 3031	<<locked>>	81%	37376	76%	**69	100%
[IMR 4064]*	<<locked>>	81%	34345	70%	**05	93%
[IMR 4166 Enduron]*	<<locked>>	85%	39479	80%	**97	90%
[IMR 4451 Enduron]*	<<locked>>	87%	40074	81%	**33	90%
[IMR 4831]*	<<locked>>	91%	31633	64%	**95	90%
IMR 4895	<<locked>>	81%	37927	77%	**63	95%
Lovex D073.6	<<locked>>	81%	40219	82%	**92	99%
Lovex S062	<<locked>>	81%	36477	74%	**77	96%
[Lovex S065]*	<<locked>>	86%	35520	72%	**38	90%
[Lovex S070]*	<<locked>>	91%	38841	79%	**33	90%
Norma 201	<<locked>>	81%	40654	82%	**66	97%
[Norma 203B]*	<<locked>>	81%	36390	74%	**13	94%
[Norma URP]*	<<locked>>	87%	32300	66%	**22	90%
[Ramshot Big Game]*	<<locked>>	81%	36230	73%	**23	94%
[Ramshot Hunter]*	<<locked>>	92%	37942	77%	**66	90%
ReloadSwiss RS 14	<<locked>>	81%	26643	54%	**93	100%
[ReloadSwiss RS 50]*	<<locked>>	83%	37739	77%	**90	90%
ReloadSwiss RS 52	<<locked>>	81%	35273	72%	**30	96%
[ReloadSwiss RS 60]*	<<locked>>	81%	29356	60%	**53	91%
[ReloadSwiss RS 62]*	<<locked>>	88%	33040	67%	**71	90%
[ReloadSwiss RS 70]*	<<locked>>	91%	36782	75%	**49	90%
Rottweil R 902	<<locked>>	81%	38392	78%	**07	97%
[Rottweil R 903]*	<<locked>>	81%	31778	64%	**92	93%
[SNPE Vectan SP 11]*	<<locked>>	81%	33286	68%	**48	93%
SNPE Vectan SP 9	<<locked>>	81%	40379	82%	**86	96%
SNPE Vectan Tubal 5000	<<locked>>	81%	34853	71%	**79	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	90%	39421	80%	**90	90%
[Shooters World Long Rifle]*	<<locked>>	86%	35520	72%	**38	90%
Shooters World Match Rifle	<<locked>>	81%	40219	82%	**92	99%
Shooters World Precision	<<locked>>	81%	36477	74%	**77	96%
[Somchem S355]*	<<locked>>	81%	32851	67%	**99	93%
[Somchem S365]*	<<locked>>	84%	26295	53%	**61	90%
Vihtavuori N133	<<locked>>	81%	39653	80%	**94	100%
Vihtavuori N135	<<locked>>	81%	31836	65%	**62	99%
Vihtavuori N140	<<locked>>	81%	37869	77%	**97	99%
[Vihtavuori N150]*	<<locked>>	81%	27876	57%	**31	93%
[Vihtavuori N160]*	<<locked>>	85%	32590	66%	**99	90%
Vihtavuori N540	<<locked>>	81%	37753	77%	**13	99%
[Vihtavuori N550]*	<<locked>>	84%	32372	66%	**22	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	28094	57%	**12	90%
[Winchester 760]*	<<locked>>	88%	39494	80%	**12	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