Load data for .257 Roberts + .257 | 85gr | Barnes X

Recommended Powder(s): ReloadSwiss RS 52

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 85gr \| Barnes X
Manufacturer SKU:	25705
Bullet Weight:	85gr \| 5.5g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	0.980" \| 24.9mm
Caliber:	.257 Roberts load data
Case Length (l3):	2.233" \| 56.7mm
Cartridge Length (C.O.L.):	2.733" \| 69.4mm
Seated Depth:	0.480" \| 12.2mm
Shank Seated Depth:	0.480" \| 12.2mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	51488 psi \| 3550 bar
LID:	LID_B491_C241
Last updated:	2025-01-01

Load data for 108 loads in caliber .257 Roberts with .257 | 85gr | Barnes X 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>>	88%	46282	90%	**71	96%
Accurate 4064	<<locked>>	86%	45339	88%	**81	100%
Accurate 4350	<<locked>>	96%	46151	90%	**53	96%
Alliant Reloder- TS 15.5	<<locked>>	88%	46021	89%	**04	98%
Alliant Reloder-15	<<locked>>	85%	45440	88%	**00	96%
Alliant Reloder-16	<<locked>>	96%	45658	89%	**50	95%
Alliant Reloder-17	<<locked>>	92%	45440	88%	**86	97%
[Alliant Reloder-23]*	<<locked>>	97%	34142	66%	**67	92%
Hodgdon CFE223	<<locked>>	86%	45484	88%	**33	96%
Hodgdon H380	<<locked>>	87%	45803	89%	**81	95%
[Hodgdon H414]*	<<locked>>	91%	45759	89%	**30	92%
Hodgdon Hybrid 100V	<<locked>>	96%	42685	83%	**48	97%
[Hodgdon LVR]*	<<locked>>	93%	45585	89%	**27	94%
Hodgdon VARGET	<<locked>>	88%	46151	90%	**71	96%
Hodgdon TrailBoss	<<locked>>	97%	34098	66%	**11	100%
IMR 3031	<<locked>>	85%	45774	89%	**23	100%
IMR 4064	<<locked>>	88%	45295	88%	**48	96%
[IMR 4166 Enduron]*	<<locked>>	89%	46238	90%	**22	92%
[IMR 4451 Enduron]*	<<locked>>	90%	45701	89%	**38	92%
[IMR 4831]*	<<locked>>	96%	40176	78%	**05	94%
IMR 4895	<<locked>>	85%	46325	90%	**30	97%
Lovex S062	<<locked>>	86%	46122	90%	**77	98%
[Lovex S065]*	<<locked>>	93%	46166	90%	**54	94%
[Lovex S070]*	<<locked>>	94%	45600	89%	**64	92%
Norma 203B	<<locked>>	86%	45643	89%	**10	97%
Norma URP	<<locked>>	96%	45788	89%	**46	95%
Ramshot Big Game	<<locked>>	87%	46282	90%	**30	97%
[Ramshot Hunter]*	<<locked>>	97%	45818	89%	**27	93%
ReloadSwiss RS 14	<<locked>>	95%	33736	66%	**37	100%
[ReloadSwiss RS 50]*	<<locked>>	87%	45788	89%	**51	93%
ReloadSwiss RS 52 👍	<<locked>>	87%	45542	88%	**43	99%
ReloadSwiss RS 60	<<locked>>	93%	46209	90%	**12	98%
ReloadSwiss RS 62	<<locked>>	96%	45339	88%	**53	95%
[ReloadSwiss RS 70]*	<<locked>>	96%	46282	90%	**69	94%
Rottweil R 902	<<locked>>	84%	45469	88%	**38	98%
Rottweil R 903	<<locked>>	90%	46224	90%	**07	98%
SNPE Vectan SP 11	<<locked>>	89%	46108	90%	**40	97%
SNPE Vectan SP 9	<<locked>>	83%	46166	90%	**91	97%
SNPE Vectan Tubal 5000	<<locked>>	88%	46137	90%	**02	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	92%	45295	88%	**92	92%
[Shooters World Long Rifle]*	<<locked>>	93%	46166	90%	**54	94%
Shooters World Precision	<<locked>>	86%	46122	90%	**77	98%
Somchem S355	<<locked>>	89%	45745	89%	**87	97%
Somchem S365	<<locked>>	96%	41713	81%	**00	98%
Vihtavuori N133	<<locked>>	84%	45600	89%	**89	100%
Vihtavuori N135	<<locked>>	91%	46006	89%	**61	100%
Vihtavuori N140	<<locked>>	85%	46224	90%	**54	100%
Vihtavuori N150	<<locked>>	95%	45716	89%	**61	99%
Vihtavuori N160	<<locked>>	93%	45803	89%	**91	95%
Vihtavuori N540	<<locked>>	85%	45672	89%	**71	100%
Vihtavuori N550	<<locked>>	93%	46151	90%	**50	95%
[Vihtavuori N555]*	<<locked>>	97%	36405	71%	**69	93%
Winchester 6.5 StaBALL	<<locked>>	94%	45876	89%	**64	98%
[Winchester 760]*	<<locked>>	91%	45759	89%	**30	92%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2208]*	<<locked>>	81%	37971	74%	**81	94%
Accurate 4064	<<locked>>	81%	39624	77%	**49	99%
[Accurate 4350]*	<<locked>>	85%	32967	64%	**35	90%
Alliant Reloder- TS 15.5	<<locked>>	81%	37550	73%	**10	96%
Alliant Reloder-15	<<locked>>	81%	40480	79%	**82	95%
[Alliant Reloder-16]*	<<locked>>	86%	34113	66%	**48	90%
[Alliant Reloder-17]*	<<locked>>	81%	32619	63%	**31	92%
[Alliant Reloder-23]*	<<locked>>	93%	31270	61%	**69	90%
[Hodgdon CFE223]*	<<locked>>	81%	38218	74%	**49	93%
[Hodgdon H380]*	<<locked>>	81%	38058	74%	**07	92%
[Hodgdon H414]*	<<locked>>	88%	42351	82%	**45	90%
[Hodgdon Hybrid 100V]*	<<locked>>	83%	29225	57%	**67	90%
[Hodgdon LVR]*	<<locked>>	85%	36085	70%	**87	91%
[Hodgdon VARGET]*	<<locked>>	81%	37405	73%	**64	93%
Hodgdon TrailBoss	<<locked>>	81%	27006	52%	**41	100%
IMR 3031	<<locked>>	81%	40219	78%	**09	100%
[IMR 4064]*	<<locked>>	81%	37144	72%	**58	94%
[IMR 4166 Enduron]*	<<locked>>	85%	42032	82%	**17	90%
[IMR 4451 Enduron]*	<<locked>>	87%	42206	82%	**53	90%
[IMR 4831]*	<<locked>>	89%	32285	63%	**85	90%
IMR 4895	<<locked>>	81%	41060	80%	**05	96%
Lovex S062	<<locked>>	81%	39856	77%	**36	97%
[Lovex S065]*	<<locked>>	84%	36419	71%	**25	90%
[Lovex S070]*	<<locked>>	90%	40712	79%	**46	90%
Norma 203B	<<locked>>	81%	39610	77%	**63	95%
[Norma URP]*	<<locked>>	85%	33272	65%	**18	90%
Ramshot Big Game	<<locked>>	81%	38798	75%	**63	95%
[Ramshot Hunter]*	<<locked>>	91%	39175	76%	**76	90%
ReloadSwiss RS 14	<<locked>>	81%	27601	54%	**90	100%
[ReloadSwiss RS 50]*	<<locked>>	82%	39262	76%	**00	90%
ReloadSwiss RS 52	<<locked>>	81%	37869	74%	**69	97%
[ReloadSwiss RS 60]*	<<locked>>	81%	32010	62%	**08	92%
[ReloadSwiss RS 62]*	<<locked>>	87%	34316	67%	**71	90%
[ReloadSwiss RS 70]*	<<locked>>	90%	38247	74%	**56	90%
Rottweil R 902	<<locked>>	81%	42047	82%	**63	97%
[Rottweil R 903]*	<<locked>>	81%	35273	68%	**51	94%
[SNPE Vectan SP 11]*	<<locked>>	81%	35592	69%	**84	93%
SNPE Vectan SP 9	<<locked>>	81%	42424	82%	**02	96%
SNPE Vectan Tubal 5000	<<locked>>	81%	37666	73%	**18	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	89%	40915	79%	**94	90%
[Shooters World Long Rifle]*	<<locked>>	84%	36419	71%	**25	90%
Shooters World Precision	<<locked>>	81%	39856	77%	**36	97%
[Somchem S355]*	<<locked>>	81%	36042	70%	**51	94%
[Somchem S365]*	<<locked>>	82%	27282	53%	**61	91%
Vihtavuori N133	<<locked>>	81%	42003	82%	**17	100%
Vihtavuori N135	<<locked>>	81%	35012	68%	**15	99%
Vihtavuori N140	<<locked>>	81%	40770	79%	**40	99%
[Vihtavuori N150]*	<<locked>>	81%	31111	60%	**97	94%
[Vihtavuori N160]*	<<locked>>	82%	33286	65%	**85	90%
Vihtavuori N540	<<locked>>	81%	40335	78%	**53	99%
[Vihtavuori N550]*	<<locked>>	82%	33620	65%	**31	90%
[Vihtavuori N555]*	<<locked>>	92%	31676	62%	**22	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	30980	60%	**74	91%
[Winchester 760]*	<<locked>>	88%	42351	82%	**45	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.