Load data for .257 Roberts + .257 | 120gr | Speer Spitzer Soft Point

Recommended Powder(s): Accurate 4350, Alliant Reloder-16, Norma URP, ReloadSwiss RS 62, Somchem S365

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 120gr \| Speer Spitzer Soft Point
Manufacturer SKU:	1411
Bullet Weight:	120gr \| 7.8g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	1.090" \| 27.7mm
Caliber:	.257 Roberts load data
Case Length (l3):	2.233" \| 56.7mm
Cartridge Length (C.O.L.):	2.733" \| 69.4mm
Seated Depth:	0.590" \| 15.0mm
Shank Seated Depth:	0.590" \| 15.0mm
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	51488 psi \| 3550 bar
LID:	LID_B6094_C241
Last updated:	2025-01-01

Load data for 120 loads in caliber .257 Roberts with .257 | 120gr | Speer Spitzer Soft Point bullet and 60 powders such as Accurate 4350, Alliant Reloder-16, Norma URP, ReloadSwiss RS 62, 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".

Go to the bottom of the "My Account " page to set the measure system (imperial vs. metric)
Muzzle velocity vs. barrel length
Every 1 inch additional barrel length increases muzzle velocity by approx. 30.8 fps
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>>	83%	45513	88%	**48	99%
[ADI AR 2209]*	<<locked>>	96%	45934	89%	**23	94%
Accurate 2700	<<locked>>	84%	45556	88%	**98	96%
Accurate 3100	<<locked>>	96%	40045	78%	**02	96%
Accurate 4350 👍	<<locked>>	91%	46253	90%	**36	99%
Alliant Reloder- TS 15.5	<<locked>>	83%	45397	88%	**71	100%
Alliant Reloder-16 👍	<<locked>>	92%	46209	90%	**69	99%
Alliant Reloder-17	<<locked>>	88%	46108	90%	**85	100%
Alliant Reloder-19	<<locked>>	96%	45397	88%	**17	95%
[Alliant Reloder-22]*	<<locked>>	97%	41118	80%	**80	93%
Alliant Reloder-23	<<locked>>	97%	38798	75%	**41	99%
[Alliant Reloder-25]*	<<locked>>	97%	34534	67%	**43	94%
Alliant Reloder-26	<<locked>>	96%	42612	83%	**89	98%
Hodgdon H380	<<locked>>	83%	46282	90%	**84	99%
Hodgdon H414	<<locked>>	86%	45556	88%	**23	97%
Hodgdon H4350	<<locked>>	93%	45658	89%	**64	96%
Hodgdon Hybrid 100V	<<locked>>	94%	45832	89%	**00	100%
Hodgdon LVR	<<locked>>	88%	45324	88%	**07	98%
Hodgdon Superperformance	<<locked>>	89%	45542	88%	**53	96%
Hodgdon VARGET	<<locked>>	84%	45977	89%	**54	99%
Hodgdon TrailBoss	<<locked>>	96%	33895	66%	**90	100%
IMR 4064	<<locked>>	84%	45701	89%	**41	99%
IMR 4166 Enduron	<<locked>>	85%	46224	90%	**31	97%
IMR 4350	<<locked>>	91%	45643	89%	**67	96%
IMR 4451 Enduron	<<locked>>	86%	45847	89%	**51	96%
IMR 4831	<<locked>>	96%	45788	89%	**13	99%
[IMR 4955 Enduron]*	<<locked>>	97%	44440	86%	**31	92%
Lovex S065	<<locked>>	88%	45992	89%	**57	98%
Lovex S070	<<locked>>	90%	46282	90%	**80	97%
[Lovex S071]*	<<locked>>	96%	33533	65%	**57	94%
Norma 204	<<locked>>	91%	45905	89%	**10	95%
Norma MRP	<<locked>>	96%	42612	83%	**49	96%
Norma URP 👍	<<locked>>	91%	45614	89%	**23	99%
Ramshot Hunter	<<locked>>	92%	45774	89%	**36	98%
[Ramshot Magnum]*	<<locked>>	97%	39523	77%	**12	93%
ReloadSwiss RS 14	<<locked>>	97%	34983	68%	**42	100%
ReloadSwiss RS 60	<<locked>>	88%	45759	89%	**99	100%
ReloadSwiss RS 62 👍	<<locked>>	91%	45963	89%	**59	99%
ReloadSwiss RS 70	<<locked>>	91%	46108	90%	**89	99%
Rottweil R 903	<<locked>>	85%	45745	89%	**74	100%
[Rottweil R 904]*	<<locked>>	94%	45600	89%	**67	93%
Rottweil R 905	<<locked>>	96%	45092	88%	**23	95%
Rottweil R 907	<<locked>>	87%	46122	90%	**54	96%
SNPE Vectan SP 11	<<locked>>	84%	45672	89%	**03	100%
SNPE Vectan Tubal 5000	<<locked>>	84%	46021	89%	**66	100%
SNPE Vectan Tubal 7000	<<locked>>	89%	46064	89%	**12	97%
Shooters World Long Rifle	<<locked>>	88%	45992	89%	**57	98%
Somchem S355	<<locked>>	85%	45484	88%	**64	100%
[Somchem S361]*	<<locked>>	93%	45745	89%	**38	92%
Somchem S365 👍	<<locked>>	94%	45818	89%	**69	100%
Somchem S385	<<locked>>	96%	45382	88%	**97	96%
Vihtavuori N135	<<locked>>	86%	45455	88%	**98	100%
Vihtavuori N150	<<locked>>	90%	46282	90%	**48	100%
Vihtavuori N160	<<locked>>	88%	45905	89%	**94	99%
[Vihtavuori N165]*	<<locked>>	96%	38261	74%	**43	93%
Vihtavuori N550	<<locked>>	88%	45643	89%	**20	99%
Vihtavuori N555	<<locked>>	97%	42685	83%	**17	99%
Winchester 6.5 StaBALL	<<locked>>	90%	46035	89%	**77	100%
Winchester 760	<<locked>>	86%	45556	88%	**23	97%
Winchester StaBALL HD	<<locked>>	96%	34200	66%	**28	99%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2208	<<locked>>	81%	42511	83%	**92	99%
[ADI AR 2209]*	<<locked>>	88%	35969	70%	**07	90%
[Accurate 2700]*	<<locked>>	81%	40886	79%	**10	94%
[Accurate 3100]*	<<locked>>	85%	27572	54%	**00	90%
Accurate 4350	<<locked>>	81%	33011	64%	**61	96%
Alliant Reloder- TS 15.5	<<locked>>	81%	42511	83%	**18	100%
Alliant Reloder-16	<<locked>>	81%	33156	64%	**77	96%
Alliant Reloder-17	<<locked>>	81%	36840	72%	**98	99%
[Alliant Reloder-19]*	<<locked>>	87%	34969	68%	**90	90%
[Alliant Reloder-22]*	<<locked>>	91%	34403	67%	**23	90%
[Alliant Reloder-23]*	<<locked>>	81%	24004	47%	**21	92%
[Alliant Reloder-25]*	<<locked>>	91%	28413	55%	**59	90%
[Alliant Reloder-26]*	<<locked>>	83%	26658	52%	**49	90%
Hodgdon H380	<<locked>>	81%	43279	84%	**31	98%
[Hodgdon H414]*	<<locked>>	81%	38116	74%	**72	94%
[Hodgdon H4350]*	<<locked>>	81%	32082	62%	**69	90%
Hodgdon Hybrid 100V	<<locked>>	81%	30284	59%	**69	96%
Hodgdon LVR	<<locked>>	81%	35940	70%	**13	96%
[Hodgdon Superperformance]*	<<locked>>	81%	34301	67%	**00	92%
Hodgdon VARGET	<<locked>>	81%	42192	82%	**85	99%
Hodgdon TrailBoss	<<locked>>	92%	31981	62%	**54	100%
IMR 4064	<<locked>>	81%	41771	81%	**72	99%
IMR 4166 Enduron	<<locked>>	81%	41466	81%	**36	95%
[IMR 4350]*	<<locked>>	81%	33533	65%	**02	91%
IMR 4451 Enduron	<<locked>>	81%	39363	76%	**23	95%
[IMR 4831]*	<<locked>>	81%	29037	56%	**43	94%
[IMR 4955 Enduron]*	<<locked>>	93%	39914	78%	**39	90%
Lovex S065	<<locked>>	81%	36941	72%	**74	95%
[Lovex S070]*	<<locked>>	81%	34838	68%	**41	93%
[Lovex S071]*	<<locked>>	90%	27035	52%	**87	90%
[Norma 204]*	<<locked>>	83%	35012	68%	**70	90%
[Norma MRP]*	<<locked>>	88%	31821	62%	**77	90%
Norma URP	<<locked>>	81%	33011	64%	**57	95%
[Ramshot Hunter]*	<<locked>>	81%	32169	62%	**31	93%
[Ramshot Magnum]*	<<locked>>	93%	34418	67%	**93	90%
ReloadSwiss RS 14	<<locked>>	87%	30298	59%	**50	100%
ReloadSwiss RS 60	<<locked>>	81%	35636	69%	**79	99%
ReloadSwiss RS 62	<<locked>>	81%	32532	63%	**70	95%
[ReloadSwiss RS 70]*	<<locked>>	81%	32387	63%	**64	94%
Rottweil R 903	<<locked>>	81%	39900	77%	**66	99%
[Rottweil R 904]*	<<locked>>	89%	38261	74%	**16	90%
[Rottweil R 905]*	<<locked>>	88%	34403	67%	**87	90%
[Rottweil R 907]*	<<locked>>	81%	37782	73%	**80	93%
SNPE Vectan SP 11	<<locked>>	81%	40828	79%	**18	99%
SNPE Vectan Tubal 5000	<<locked>>	81%	41989	82%	**97	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	81%	35795	70%	**05	93%
Shooters World Long Rifle	<<locked>>	81%	36941	72%	**74	95%
Somchem S355	<<locked>>	81%	40698	79%	**69	99%
[Somchem S361]*	<<locked>>	90%	41046	80%	**46	90%
Somchem S365	<<locked>>	81%	29428	57%	**05	98%
[Somchem S385]*	<<locked>>	85%	31633	61%	**92	90%
Vihtavuori N135	<<locked>>	81%	39523	77%	**00	100%
Vihtavuori N150	<<locked>>	81%	34316	67%	**15	99%
Vihtavuori N160	<<locked>>	81%	35694	69%	**84	96%
[Vihtavuori N165]*	<<locked>>	91%	32779	64%	**05	90%
Vihtavuori N550	<<locked>>	81%	36463	71%	**36	97%
[Vihtavuori N555]*	<<locked>>	81%	25512	50%	**93	92%
Winchester 6.5 StaBALL	<<locked>>	81%	33939	66%	**34	98%
[Winchester 760]*	<<locked>>	81%	38116	74%	**72	94%
[Winchester StaBALL HD]*	<<locked>>	84%	23293	45%	**44	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.