Load data for .257 Roberts + .257 | 95gr | AERO SB,- smax:15.90

Recommended Powder(s):

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:	.257 \| 95gr \| AERO SB,- smax:15.90
Bullet Weight:	95gr \| 6.2g
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_B25_C241
Last updated:	2026-01-20

Load data for 154 loads in caliber .257 Roberts with .257 | 95gr | AERO SB,- smax:15.90 bullet and 77 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>>	84%	45818	89%	**69	98%
ADI AR 2208	<<locked>>	89%	45585	89%	**46	97%
Accurate 2495	<<locked>>	85%	46195	90%	**72	100%
Accurate 2520	<<locked>>	84%	46166	90%	**72	100%
[Accurate 2700]*	<<locked>>	91%	46253	90%	**81	92%
Accurate 4064 👍	<<locked>>	90%	45527	88%	**69	100%
Accurate 4350	<<locked>>	97%	43540	85%	**86	96%
Alliant AR-Comp	<<locked>>	83%	45934	89%	**53	100%
Alliant Power Pro 2000-MR	<<locked>>	87%	45324	88%	**64	97%
Alliant Reloder- TS 15.5 👍	<<locked>>	90%	45614	89%	**82	99%
Alliant Reloder-15	<<locked>>	88%	45963	89%	**89	97%
Alliant Reloder-16	<<locked>>	97%	43468	84%	**92	96%
Alliant Reloder-17	<<locked>>	94%	45397	88%	**64	98%
Baschieri & Pellagri 107	<<locked>>	85%	46006	89%	**79	97%
Bofors RP3 👍	<<locked>>	90%	45266	88%	**82	99%
[Bofors RP7]*	<<locked>>	94%	46180	90%	**27	93%
Hodgdon BL-C2 👍	<<locked>>	83%	45919	89%	**92	99%
Hodgdon CFE223	<<locked>>	89%	45847	89%	**12	97%
Hodgdon H380	<<locked>>	89%	45252	88%	**53	96%
[Hodgdon H414]*	<<locked>>	93%	45600	89%	**09	93%
Hodgdon Hybrid 100V	<<locked>>	97%	39987	78%	**74	97%
Hodgdon LVR	<<locked>>	96%	46137	90%	**22	96%
[Hodgdon Superperformance]*	<<locked>>	95%	45498	88%	**12	92%
Hodgdon VARGET	<<locked>>	90%	45585	89%	**46	97%
Hodgdon TrailBoss	<<locked>>	96%	32793	64%	**80	100%
IMR 3031	<<locked>>	88%	45977	89%	**95	100%
IMR 4064	<<locked>>	90%	45803	89%	**36	97%
[IMR 4166 Enduron]*	<<locked>>	90%	45629	89%	**90	93%
[IMR 4350]*	<<locked>>	96%	44338	86%	**17	92%
[IMR 4451 Enduron]*	<<locked>>	92%	45992	89%	**27	93%
[IMR 4831]*	<<locked>>	97%	37101	72%	**15	94%
IMR 4895	<<locked>>	87%	46064	89%	**09	98%
IMR 8208 XBR	<<locked>>	83%	45977	89%	**46	99%
Lovex D073.6	<<locked>>	86%	46166	90%	**72	100%
Lovex S060	<<locked>>	84%	45498	88%	**90	98%
Lovex S062	<<locked>>	88%	45542	88%	**43	99%
Lovex S065	<<locked>>	95%	46209	90%	**43	95%
[Lovex S070]*	<<locked>>	97%	45803	89%	**56	94%
Norma 201	<<locked>>	85%	45774	89%	**36	99%
Norma 202	<<locked>>	85%	45963	89%	**46	100%
Norma 203B	<<locked>>	89%	46238	90%	**95	98%
Norma URP	<<locked>>	97%	43526	85%	**72	96%
Ramshot Big Game	<<locked>>	88%	45397	88%	**95	98%
[Ramshot Hunter]*	<<locked>>	97%	42670	83%	**56	93%
Ramshot Wild Boar	<<locked>>	84%	46108	90%	**72	98%
ReloadSwiss RS 14	<<locked>>	95%	32663	63%	**19	100%
[ReloadSwiss RS 50]*	<<locked>>	89%	45687	89%	**36	94%
ReloadSwiss RS 52	<<locked>>	86%	46311	90%	**68	98%
ReloadSwiss RS 60 👍	<<locked>>	92%	46224	90%	**97	100%
ReloadSwiss RS 62	<<locked>>	97%	43395	84%	**05	96%
ReloadSwiss RS 70	<<locked>>	97%	44092	86%	**12	95%
Rottweil R 902	<<locked>>	87%	45571	89%	**23	99%
Rottweil R 903	<<locked>>	92%	45672	89%	**79	98%
[Rottweil R 907]*	<<locked>>	94%	46180	90%	**27	93%
SNPE Vectan SP 11	<<locked>>	91%	45803	89%	**15	98%
SNPE Vectan SP 7	<<locked>>	84%	45934	89%	**40	96%
SNPE Vectan SP 9	<<locked>>	86%	46340	90%	**69	98%
SNPE Vectan Tubal 3000	<<locked>>	84%	45426	88%	**58	100%
SNPE Vectan Tubal 5000	<<locked>>	90%	46267	90%	**74	100%
[SNPE Vectan Tubal 7000]*	<<locked>>	95%	45847	89%	**81	93%
Shooters World Long Rifle	<<locked>>	95%	46209	90%	**43	95%
Shooters World Match Rifle	<<locked>>	86%	46166	90%	**72	100%
Shooters World Precision	<<locked>>	88%	45542	88%	**43	99%
Somchem S335	<<locked>>	85%	45847	89%	**77	100%
Somchem S341	<<locked>>	84%	45730	89%	**40	98%
Somchem S355	<<locked>>	92%	45585	89%	**63	98%
Somchem S365	<<locked>>	96%	38319	74%	**04	98%
Vihtavuori N133	<<locked>>	86%	45890	89%	**67	100%
Vihtavuori N135	<<locked>>	93%	45759	89%	**33	100%
Vihtavuori N140	<<locked>>	87%	45353	88%	**17	100%
Vihtavuori N150	<<locked>>	96%	44962	87%	**23	99%
Vihtavuori N160	<<locked>>	95%	46180	90%	**86	97%
Vihtavuori N540	<<locked>>	87%	45788	89%	**46	100%
Vihtavuori N550	<<locked>>	95%	46064	89%	**31	97%
[Vihtavuori N555]*	<<locked>>	97%	32155	62%	**53	92%
Winchester 6.5 StaBALL	<<locked>>	96%	45600	89%	**43	98%
[Winchester 760]*	<<locked>>	93%	45600	89%	**09	93%

Max Load - Barrel Length: 23.60''

Powder	Charge	FR	MaxP	%	V(0)	z
ADI AR 2206H	<<locked>>	81%	40843	79%	**58	97%
[ADI AR 2208]*	<<locked>>	81%	34577	67%	**87	94%
Accurate 2495	<<locked>>	81%	40756	79%	**61	100%
Accurate 2520	<<locked>>	81%	42076	82%	**94	99%
[Accurate 2700]*	<<locked>>	87%	40567	79%	**56	90%
Accurate 4064	<<locked>>	81%	34272	67%	**30	99%
[Accurate 4350]*	<<locked>>	87%	29834	58%	**44	90%
Alliant AR-Comp	<<locked>>	81%	42583	83%	**90	100%
[Alliant Power Pro 2000-MR]*	<<locked>>	81%	36898	72%	**58	94%
Alliant Reloder- TS 15.5	<<locked>>	81%	33663	65%	**07	95%
Alliant Reloder-15	<<locked>>	81%	36434	71%	**76	95%
[Alliant Reloder-16]*	<<locked>>	86%	31038	60%	**61	90%
[Alliant Reloder-17]*	<<locked>>	81%	29327	57%	**41	92%
Baschieri & Pellagri 107	<<locked>>	81%	39972	78%	**51	95%
Bofors RP3	<<locked>>	81%	33112	64%	**00	95%
[Bofors RP7]*	<<locked>>	89%	39378	76%	**79	90%
Hodgdon BL-C2	<<locked>>	81%	41756	81%	**13	98%
[Hodgdon CFE223]*	<<locked>>	81%	34867	68%	**56	93%
[Hodgdon H380]*	<<locked>>	81%	34287	67%	**03	92%
[Hodgdon H414]*	<<locked>>	88%	37942	74%	**38	90%
[Hodgdon Hybrid 100V]*	<<locked>>	85%	26876	52%	**10	90%
[Hodgdon LVR]*	<<locked>>	85%	32605	63%	**94	90%
[Hodgdon Superperformance]*	<<locked>>	92%	40683	79%	**00	90%
[Hodgdon VARGET]*	<<locked>>	81%	34577	67%	**87	94%
Hodgdon TrailBoss	<<locked>>	81%	26339	51%	**32	100%
IMR 3031	<<locked>>	81%	36854	72%	**08	100%
[IMR 4064]*	<<locked>>	81%	33721	65%	**61	94%
[IMR 4166 Enduron]*	<<locked>>	84%	37304	72%	**07	90%
[IMR 4350]*	<<locked>>	93%	39479	77%	**12	90%
[IMR 4451 Enduron]*	<<locked>>	87%	38348	74%	**59	90%
[IMR 4831]*	<<locked>>	90%	29312	57%	**12	90%
IMR 4895	<<locked>>	81%	37347	73%	**08	96%
IMR 8208 XBR	<<locked>>	81%	42931	83%	**84	98%
Lovex D073.6	<<locked>>	81%	39117	76%	**31	99%
Lovex S060	<<locked>>	81%	41597	81%	**08	97%
Lovex S062	<<locked>>	81%	36100	70%	**36	97%
[Lovex S065]*	<<locked>>	85%	33663	65%	**57	90%
[Lovex S070]*	<<locked>>	90%	36448	71%	**46	90%
Norma 201	<<locked>>	81%	39871	77%	**12	98%
Norma 202	<<locked>>	81%	40059	78%	**28	99%
Norma 203B	<<locked>>	81%	35824	70%	**62	95%
[Norma URP]*	<<locked>>	86%	30661	60%	**48	90%
Ramshot Big Game	<<locked>>	81%	35404	69%	**69	95%
[Ramshot Hunter]*	<<locked>>	91%	35882	70%	**82	90%
Ramshot Wild Boar	<<locked>>	81%	42134	82%	**90	97%
ReloadSwiss RS 14	<<locked>>	81%	26281	51%	**68	100%
[ReloadSwiss RS 50]*	<<locked>>	82%	35694	69%	**03	90%
ReloadSwiss RS 52	<<locked>>	81%	38058	74%	**84	95%
ReloadSwiss RS 60	<<locked>>	81%	31343	61%	**17	96%
[ReloadSwiss RS 62]*	<<locked>>	88%	31357	61%	**94	90%
[ReloadSwiss RS 70]*	<<locked>>	90%	35143	68%	**82	90%
Rottweil R 902	<<locked>>	81%	37898	74%	**59	97%
[Rottweil R 903]*	<<locked>>	81%	31038	60%	**41	94%
[Rottweil R 907]*	<<locked>>	89%	39378	76%	**79	90%
[SNPE Vectan SP 11]*	<<locked>>	81%	32532	63%	**00	93%
[SNPE Vectan SP 7]*	<<locked>>	81%	40959	80%	**38	94%
SNPE Vectan SP 9	<<locked>>	81%	39537	77%	**22	96%
SNPE Vectan Tubal 3000	<<locked>>	81%	41394	80%	**82	100%
SNPE Vectan Tubal 5000	<<locked>>	81%	33968	66%	**28	99%
[SNPE Vectan Tubal 7000]*	<<locked>>	89%	36767	71%	**03	90%
[Shooters World Long Rifle]*	<<locked>>	85%	33663	65%	**57	90%
Shooters World Match Rifle	<<locked>>	81%	39117	76%	**31	99%
Shooters World Precision	<<locked>>	81%	36100	70%	**36	97%
Somchem S335	<<locked>>	81%	41060	80%	**85	100%
Somchem S341	<<locked>>	81%	40799	79%	**48	97%
[Somchem S355]*	<<locked>>	81%	32198	63%	**51	94%
[Somchem S365]*	<<locked>>	83%	24627	48%	**87	90%
Vihtavuori N133	<<locked>>	81%	38986	76%	**36	100%
Vihtavuori N135	<<locked>>	81%	31009	60%	**12	99%
Vihtavuori N140	<<locked>>	81%	37594	73%	**56	99%
[Vihtavuori N150]*	<<locked>>	81%	27195	53%	**97	94%
[Vihtavuori N160]*	<<locked>>	84%	31009	60%	**28	91%
Vihtavuori N540	<<locked>>	81%	37289	72%	**76	99%
[Vihtavuori N550]*	<<locked>>	83%	30385	59%	**48	90%
[Vihtavuori N555]*	<<locked>>	93%	28718	56%	**48	90%
[Winchester 6.5 StaBALL]*	<<locked>>	81%	27485	53%	**84	91%
[Winchester 760]*	<<locked>>	88%	37942	74%	**38	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