Load data for .257 Roberts + .257 | 70gr | Impala LWHV LS

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 70gr \| Impala LWHV LS
Bullet Weight:	70gr \| 4.5g
Bullet Diameter:	0.257" \| 6.53mm
Bullet Length:	<<locked>>
Caliber:	.257 Roberts load data
Case Length (l3):	2.233" \| 56.7mm
Cartridge Length (C.O.L.):	<<locked>>
Seated Depth:	<<locked>>
Shank Seated Depth:	<<locked>>
Case Capacity:	56.0 Grains of Water \| 3.64 cm³
Primer Size:	Large Rifle (LR)
Max. allowed Pressure:	51488 psi \| 3550 bar
LID:	LID_B2970_C241
Last updated:	2025-01-01

Load data for 0 loads in caliber .257 Roberts with .257 | 70gr | Impala LWHV LS bullet and 0 powder(s). 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 2206H]*	<<locked>>	87%	45600	89%	**27	94%
[ADI AR 2208]*	<<locked>>	93%	46137	90%	**14	94%
ADI Benchmark 8208	<<locked>>	86%	45818	89%	**10	96%
Accurate 2015	<<locked>>	83%	45455	88%	**84	100%
[Accurate 2200]*	<<locked>>	85%	45948	89%	**87	92%
Accurate 2495	<<locked>>	87%	46006	89%	**69	100%
Accurate 2520	<<locked>>	86%	45527	88%	**53	98%
Accurate 4064 👍	<<locked>>	92%	45745	89%	**53	99%
Alliant AR-Comp	<<locked>>	87%	45484	88%	**66	100%
[Alliant Power Pro 2000-MR]*	<<locked>>	90%	46122	90%	**22	93%
Alliant Reloder- TS 15.5	<<locked>>	93%	45658	89%	**53	96%
[Alliant Reloder-15]*	<<locked>>	91%	46050	89%	**66	94%
[Alliant Reloder-17]*	<<locked>>	97%	44788	87%	**96	94%
[Baschieri & Pellagri 107]*	<<locked>>	88%	45629	89%	**40	93%
Bofors RP3	<<locked>>	94%	46079	90%	**66	96%
Hodgdon BL-C2	<<locked>>	86%	45484	88%	**53	96%
Hodgdon Benchmark	<<locked>>	84%	46137	90%	**78	97%
[Hodgdon CFE223]*	<<locked>>	91%	45556	88%	**66	93%
Hodgdon H322 👍	<<locked>>	85%	46282	90%	**56	99%
[Hodgdon H380]*	<<locked>>	92%	45614	89%	**27	92%
Hodgdon H4895	<<locked>>	87%	45861	89%	**46	95%
[Hodgdon VARGET]*	<<locked>>	93%	45542	88%	**01	93%
Hodgdon TrailBoss	<<locked>>	97%	33040	64%	**92	100%
IMR 3031 👍	<<locked>>	92%	46311	90%	**12	100%
[IMR 4064]*	<<locked>>	94%	45687	89%	**07	94%
IMR 4895	<<locked>>	90%	46166	90%	**83	95%
IMR 8208 XBR	<<locked>>	86%	45818	89%	**10	96%
Lovex D073.6	<<locked>>	88%	45527	88%	**53	98%
[Lovex S060]*	<<locked>>	86%	45455	88%	**48	94%
Lovex S062	<<locked>>	91%	45629	89%	**23	96%
Norma 201	<<locked>>	88%	46151	90%	**23	96%
Norma 202	<<locked>>	88%	45643	89%	**40	98%
Norma 203B	<<locked>>	92%	46209	90%	**76	95%
[Ramshot Big Game]*	<<locked>>	92%	46064	89%	**66	94%
[Ramshot Wild Boar]*	<<locked>>	86%	45484	88%	**30	94%
ReloadSwiss RS 14	<<locked>>	97%	33388	65%	**44	100%
[ReloadSwiss RS 52]*	<<locked>>	90%	45716	89%	**28	94%
ReloadSwiss RS 60	<<locked>>	95%	45832	89%	**48	97%
Rottweil R 901	<<locked>>	85%	46006	89%	**07	98%
Rottweil R 902	<<locked>>	89%	45672	89%	**01	96%
Rottweil R 903	<<locked>>	95%	45310	88%	**43	95%
[SNPE Vectan SP 11]*	<<locked>>	94%	45614	89%	**63	94%
[SNPE Vectan SP 7]*	<<locked>>	87%	45310	88%	**78	92%
[SNPE Vectan SP 9]*	<<locked>>	88%	45440	88%	**23	94%
SNPE Vectan Tubal 3000	<<locked>>	87%	46108	90%	**48	98%
SNPE Vectan Tubal 5000	<<locked>>	93%	46122	90%	**58	99%
Shooters World Match Rifle	<<locked>>	88%	45527	88%	**53	98%
Shooters World Precision	<<locked>>	91%	45629	89%	**23	96%
Somchem S321	<<locked>>	83%	46238	90%	**43	97%
Somchem S335	<<locked>>	87%	45585	89%	**48	99%
[Somchem S341]*	<<locked>>	87%	45716	89%	**01	94%
Somchem S355	<<locked>>	95%	45687	89%	**43	95%
[Somchem S365]*	<<locked>>	96%	35099	68%	**33	92%
Vihtavuori N130	<<locked>>	83%	45730	89%	**51	100%
Vihtavuori N133	<<locked>>	89%	45513	88%	**61	100%
Vihtavuori N135 👍	<<locked>>	96%	45759	89%	**33	100%
Vihtavuori N140	<<locked>>	90%	45469	88%	**97	99%
Vihtavuori N150	<<locked>>	97%	41031	80%	**09	95%
[Vihtavuori N160]*	<<locked>>	97%	43627	85%	**78	91%
Vihtavuori N530	<<locked>>	84%	46093	90%	**43	96%
Vihtavuori N540 👍	<<locked>>	90%	45905	89%	**30	98%
[Vihtavuori N550]*	<<locked>>	97%	43439	84%	**27	92%
[Winchester 6.5 StaBALL]*	<<locked>>	97%	42670	83%	**02	94%
Winchester 748	<<locked>>	84%	45716	89%	**69	97%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
[ADI AR 2206H]*	<<locked>>	81%	37942	74%	**33	92%
[ADI AR 2208]*	<<locked>>	86%	37550	73%	**00	90%
[ADI Benchmark 8208]*	<<locked>>	81%	39798	77%	**69	94%
Accurate 2015	<<locked>>	81%	42714	83%	**22	100%
[Accurate 2200]*	<<locked>>	82%	40480	79%	**56	90%
Accurate 2495	<<locked>>	81%	38421	75%	**99	99%
Accurate 2520	<<locked>>	81%	38551	75%	**86	96%
Accurate 4064	<<locked>>	81%	32692	63%	**22	95%
Alliant AR-Comp	<<locked>>	81%	37971	74%	**09	100%
[Alliant Power Pro 2000-MR]*	<<locked>>	87%	40886	79%	**87	90%
[Alliant Reloder- TS 15.5]*	<<locked>>	82%	31952	62%	**86	90%
[Alliant Reloder-15]*	<<locked>>	84%	36796	71%	**23	90%
[Alliant Reloder-17]*	<<locked>>	90%	36521	71%	**56	90%
[Baschieri & Pellagri 107]*	<<locked>>	83%	38827	75%	**69	90%
[Bofors RP3]*	<<locked>>	82%	31560	61%	**89	90%
[Hodgdon BL-C2]*	<<locked>>	81%	38450	75%	**82	94%
Hodgdon Benchmark	<<locked>>	81%	41727	81%	**76	96%
[Hodgdon CFE223]*	<<locked>>	87%	39552	77%	**12	90%
Hodgdon H322	<<locked>>	81%	41713	81%	**51	98%
[Hodgdon H380]*	<<locked>>	89%	41031	80%	**09	90%
[Hodgdon H4895]*	<<locked>>	81%	38101	74%	**53	92%
[Hodgdon VARGET]*	<<locked>>	86%	37231	72%	**91	90%
Hodgdon TrailBoss	<<locked>>	81%	26107	51%	**08	100%
IMR 3031	<<locked>>	81%	33562	65%	**94	97%
[IMR 4064]*	<<locked>>	86%	36666	71%	**74	90%
[IMR 4895]*	<<locked>>	82%	35331	69%	**04	90%
[IMR 8208 XBR]*	<<locked>>	81%	39798	77%	**69	94%
Lovex D073.6	<<locked>>	81%	36100	70%	**14	95%
[Lovex S060]*	<<locked>>	81%	38522	75%	**84	92%
[Lovex S062]*	<<locked>>	81%	33808	66%	**12	92%
[Norma 201]*	<<locked>>	81%	37826	73%	**10	93%
Norma 202	<<locked>>	81%	37101	72%	**27	96%
[Norma 203B]*	<<locked>>	82%	34780	68%	**68	90%
[Ramshot Big Game]*	<<locked>>	84%	36071	70%	**14	90%
[Ramshot Wild Boar]*	<<locked>>	81%	38537	75%	**56	92%
ReloadSwiss RS 14	<<locked>>	81%	26484	51%	**60	100%
[ReloadSwiss RS 52]*	<<locked>>	84%	37927	74%	**28	90%
[ReloadSwiss RS 60]*	<<locked>>	84%	31981	62%	**28	90%
Rottweil R 901	<<locked>>	81%	41843	81%	**09	97%
[Rottweil R 902]*	<<locked>>	81%	35723	69%	**45	93%
[Rottweil R 903]*	<<locked>>	85%	32953	64%	**25	90%
[SNPE Vectan SP 11]*	<<locked>>	87%	36448	71%	**27	90%
[SNPE Vectan SP 7]*	<<locked>>	83%	41017	80%	**82	90%
[SNPE Vectan SP 9]*	<<locked>>	81%	36419	71%	**94	91%
SNPE Vectan Tubal 3000	<<locked>>	81%	38827	75%	**84	97%
SNPE Vectan Tubal 5000	<<locked>>	81%	32155	62%	**13	96%
Shooters World Match Rifle	<<locked>>	81%	36100	70%	**14	95%
[Shooters World Precision]*	<<locked>>	81%	33808	66%	**12	92%
Somchem S321	<<locked>>	81%	42801	83%	**61	96%
Somchem S335	<<locked>>	81%	38725	75%	**94	98%
[Somchem S341]*	<<locked>>	81%	37275	72%	**04	91%
[Somchem S355]*	<<locked>>	85%	33736	66%	**22	90%
[Somchem S365]*	<<locked>>	94%	32460	63%	**41	90%
Vihtavuori N130	<<locked>>	81%	43091	84%	**89	100%
Vihtavuori N133	<<locked>>	81%	36071	70%	**41	98%
Vihtavuori N135	<<locked>>	81%	28863	56%	**94	96%
Vihtavuori N140	<<locked>>	81%	34548	67%	**28	96%
[Vihtavuori N150]*	<<locked>>	86%	29747	58%	**84	90%
[Vihtavuori N160]*	<<locked>>	94%	40277	78%	**92	90%
Vihtavuori N530	<<locked>>	81%	41495	81%	**28	95%
Vihtavuori N540	<<locked>>	81%	34200	66%	**41	95%
[Vihtavuori N550]*	<<locked>>	94%	40045	78%	**38	90%
[Winchester 6.5 StaBALL]*	<<locked>>	90%	35302	69%	**02	90%
Winchester 748	<<locked>>	81%	41002	80%	**61	96%

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