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Load data for .257 Roberts + .257 | 100gr | Hasler Hunting

Recommended Powder(s): Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Somchem S355

.257 Roberts + .257 | 100gr | Hasler Hunting

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.257 | 100gr | Hasler Hunting
Manufacturer SKU:
H257-100
Bullet Weight:
100gr | 6.5g
Bullet Diameter:
0.257" | 6.53mm
Bullet Length:
1.161" | 29.5mm
Caliber:
.257 Roberts load data
Case Length (l3):
2.233" | 56.7mm
Cartridge Length (C.O.L.):
2.733" | 69.4mm
Seated Depth:
0.661" | 16.8mm
Shank Seated Depth:
0.529" | 13.4mm
Case Capacity:
56.0 Grains of Water | 3.64 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
51488 psi | 3550 bar
LID:
LID_B7053_C241
Last updated:
2025-01-01
Recommended Twist Rate:
1:9 - 1:8

Load data for 154 loads in caliber .257 Roberts with .257 | 100gr | Hasler Hunting bullet and 77 powders such as Alliant Reloder- TS 15.5, Alliant Reloder-17, ReloadSwiss RS 52, ReloadSwiss RS 60, Somchem S355. 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".

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    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 2206H
<<locked>>
85%
45803
89%
**04
98%
ADI AR 2208
<<locked>>
90%
45774
89%
**87
98%
Accurate 2200
<<locked>>
83%
46108
90%
**67
97%
Accurate 2495
<<locked>>
85%
45716
89%
**90
100%
Accurate 2520
<<locked>>
84%
45818
89%
**04
100%
[Accurate 2700]*
<<locked>>
90%
45600
89%
**05
93%
Accurate 4064
<<locked>>
90%
45223
88%
**97
100%
Accurate 4350
<<locked>>
97%
42801
83%
**10
96%
Alliant AR-Comp
<<locked>>
83%
45455
88%
**71
100%
Alliant Reloder- TS 15.5 👍
<<locked>>
90%
45774
89%
**23
99%
Alliant Reloder-15
<<locked>>
88%
46093
90%
**30
98%
Alliant Reloder-16
<<locked>>
97%
43787
85%
**46
97%
Alliant Reloder-17 👍
<<locked>>
94%
46340
90%
**31
99%
[Alliant Reloder-23]*
<<locked>>
97%
30255
59%
**15
93%
Baschieri & Pellagri 107
<<locked>>
85%
45759
89%
**17
97%
Hodgdon BL-C2
<<locked>>
84%
46122
90%
**36
99%
Hodgdon CFE223
<<locked>>
88%
45295
88%
**46
97%
Hodgdon H380
<<locked>>
89%
45426
88%
**00
96%
[Hodgdon H414]*
<<locked>>
93%
45658
89%
**56
94%
[Hodgdon H4350]*
<<locked>>
97%
42366
82%
**18
92%
Hodgdon Hybrid 100V
<<locked>>
97%
39885
77%
**18
97%
Hodgdon LVR
<<locked>>
95%
45411
88%
**43
96%
[Hodgdon Superperformance]*
<<locked>>
96%
46122
90%
**69
93%
Hodgdon VARGET
<<locked>>
90%
45310
88%
**67
98%
Hodgdon TrailBoss
<<locked>>
95%
32242
63%
**21
100%
IMR 3031
<<locked>>
88%
46050
89%
**27
100%
IMR 4064
<<locked>>
91%
45948
89%
**77
98%
[IMR 4166 Enduron]*
<<locked>>
91%
45948
89%
**38
94%
[IMR 4350]*
<<locked>>
97%
44715
87%
**61
93%
[IMR 4451 Enduron]*
<<locked>>
92%
46224
90%
**77
94%
[IMR 4831]*
<<locked>>
96%
36390
71%
**49
94%
IMR 4895
<<locked>>
87%
46180
90%
**46
98%
IMR 8208 XBR
<<locked>>
83%
46180
90%
**84
99%
Lovex D073.6
<<locked>>
86%
46325
90%
**13
100%
Lovex S060
<<locked>>
84%
45585
89%
**31
98%
Lovex S062
<<locked>>
88%
45571
88%
**77
99%
Lovex S065
<<locked>>
95%
45440
88%
**71
96%
[Lovex S070]*
<<locked>>
97%
45469
88%
**94
94%
Norma 201
<<locked>>
85%
45571
89%
**77
99%
Norma 202
<<locked>>
85%
45992
89%
**90
100%
Norma 203B
<<locked>>
88%
45310
88%
**17
98%
Norma URP
<<locked>>
97%
43265
84%
**10
96%
Ramshot Big Game
<<locked>>
88%
45948
89%
**46
98%
[Ramshot Hunter]*
<<locked>>
97%
42728
83%
**97
94%
ReloadSwiss RS 14
<<locked>>
95%
32634
63%
**67
100%
ReloadSwiss RS 50
<<locked>>
89%
45977
89%
**84
95%
ReloadSwiss RS 52 👍
<<locked>>
89%
45861
89%
**63
100%
ReloadSwiss RS 60 👍
<<locked>>
95%
46079
89%
**38
100%
ReloadSwiss RS 62
<<locked>>
97%
42873
83%
**30
96%
ReloadSwiss RS 70
<<locked>>
97%
44599
87%
**69
96%
Rottweil R 901
<<locked>>
83%
45963
89%
**64
100%
Rottweil R 902
<<locked>>
87%
45527
88%
**67
99%
Rottweil R 903
<<locked>>
92%
45397
88%
**10
99%
[Rottweil R 907]*
<<locked>>
93%
45498
88%
**58
93%
SNPE Vectan SP 11
<<locked>>
91%
45672
89%
**43
98%
SNPE Vectan SP 7
<<locked>>
84%
46064
89%
**84
97%
SNPE Vectan SP 9
<<locked>>
86%
46108
90%
**04
98%
SNPE Vectan Tubal 3000
<<locked>>
84%
45469
88%
**02
100%
SNPE Vectan Tubal 5000
<<locked>>
90%
45542
88%
**95
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
95%
45759
89%
**25
94%
Shooters World Long Rifle
<<locked>>
95%
45440
88%
**71
96%
Shooters World Match Rifle
<<locked>>
86%
46325
90%
**13
100%
Shooters World Precision
<<locked>>
88%
45571
88%
**77
99%
Somchem S335
<<locked>>
85%
45905
89%
**12
100%
Somchem S341
<<locked>>
84%
45571
89%
**77
98%
Somchem S355 👍
<<locked>>
92%
45730
89%
**04
99%
Somchem S365
<<locked>>
97%
38493
75%
**54
98%
Vihtavuori N133
<<locked>>
86%
45977
89%
**99
100%
Vihtavuori N135
<<locked>>
93%
45847
89%
**64
100%
Vihtavuori N140
<<locked>>
87%
45992
89%
**61
100%
Vihtavuori N150
<<locked>>
97%
45281
88%
**71
99%
Vihtavuori N160
<<locked>>
95%
45484
88%
**17
97%
Vihtavuori N540
<<locked>>
87%
45310
88%
**71
100%
Vihtavuori N550
<<locked>>
95%
45411
88%
**53
97%
[Vihtavuori N555]*
<<locked>>
97%
31807
62%
**87
93%
Winchester 6.5 StaBALL
<<locked>>
96%
45687
89%
**87
99%
[Winchester 760]*
<<locked>>
93%
45658
89%
**56
94%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
40756
79%
**02
97%
[ADI AR 2208]*
<<locked>>
81%
34461
67%
**35
94%
Accurate 2200
<<locked>>
81%
42960
83%
**02
96%
Accurate 2495
<<locked>>
81%
40001
78%
**92
100%
Accurate 2520
<<locked>>
81%
41539
81%
**28
100%
[Accurate 2700]*
<<locked>>
86%
38711
75%
**67
90%
Accurate 4064
<<locked>>
81%
33518
65%
**51
99%
[Accurate 4350]*
<<locked>>
85%
28021
54%
**43
90%
Alliant AR-Comp
<<locked>>
81%
42192
82%
**18
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
33504
65%
**41
96%
Alliant Reloder-15
<<locked>>
81%
36289
70%
**20
95%
[Alliant Reloder-16]*
<<locked>>
85%
30037
58%
**79
90%
[Alliant Reloder-17]*
<<locked>>
81%
28790
56%
**79
92%
[Alliant Reloder-23]*
<<locked>>
93%
26919
52%
**03
90%
Baschieri & Pellagri 107
<<locked>>
81%
39784
77%
**89
96%
Hodgdon BL-C2
<<locked>>
81%
41887
81%
**54
99%
[Hodgdon CFE223]*
<<locked>>
81%
34940
68%
**13
94%
[Hodgdon H380]*
<<locked>>
81%
33924
66%
**44
93%
[Hodgdon H414]*
<<locked>>
86%
35969
70%
**30
90%
[Hodgdon H4350]*
<<locked>>
94%
38595
75%
**30
90%
[Hodgdon Hybrid 100V]*
<<locked>>
84%
25730
50%
**28
90%
[Hodgdon LVR]*
<<locked>>
84%
30966
60%
**92
90%
[Hodgdon Superperformance]*
<<locked>>
91%
39146
76%
**05
90%
[Hodgdon VARGET]*
<<locked>>
81%
34069
66%
**21
94%
Hodgdon TrailBoss
<<locked>>
81%
25744
50%
**73
100%
IMR 3031
<<locked>>
81%
36550
71%
**40
100%
[IMR 4064]*
<<locked>>
81%
33547
65%
**05
94%
[IMR 4166 Enduron]*
<<locked>>
83%
36361
71%
**31
90%
[IMR 4350]*
<<locked>>
92%
38072
74%
**23
90%
[IMR 4451 Enduron]*
<<locked>>
85%
36782
71%
**71
90%
[IMR 4831]*
<<locked>>
89%
28369
55%
**30
90%
IMR 4895
<<locked>>
81%
37289
72%
**53
96%
IMR 8208 XBR
<<locked>>
81%
43062
84%
**22
99%
Lovex D073.6
<<locked>>
81%
39030
76%
**76
99%
Lovex S060
<<locked>>
81%
41510
81%
**53
97%
Lovex S062
<<locked>>
81%
35766
69%
**74
97%
[Lovex S065]*
<<locked>>
84%
31879
62%
**62
90%
[Lovex S070]*
<<locked>>
89%
35114
68%
**61
90%
Norma 201
<<locked>>
81%
39494
77%
**49
98%
Norma 202
<<locked>>
81%
39842
77%
**66
100%
Norma 203B
<<locked>>
81%
35665
69%
**07
96%
[Norma URP]*
<<locked>>
85%
29327
57%
**62
90%
Ramshot Big Game
<<locked>>
81%
35346
69%
**10
95%
[Ramshot Hunter]*
<<locked>>
90%
33910
66%
**84
90%
ReloadSwiss RS 14
<<locked>>
81%
26092
51%
**19
100%
[ReloadSwiss RS 50]*
<<locked>>
81%
34693
67%
**28
90%
ReloadSwiss RS 52
<<locked>>
81%
34011
66%
**00
97%
[ReloadSwiss RS 60]*
<<locked>>
81%
28152
55%
**52
92%
[ReloadSwiss RS 62]*
<<locked>>
86%
29805
58%
**95
90%
[ReloadSwiss RS 70]*
<<locked>>
88%
32866
64%
**71
90%
Rottweil R 901
<<locked>>
81%
42757
83%
**95
100%
Rottweil R 902
<<locked>>
81%
37608
73%
**97
98%
[Rottweil R 903]*
<<locked>>
81%
30371
59%
**66
94%
[Rottweil R 907]*
<<locked>>
88%
37579
73%
**84
90%
[SNPE Vectan SP 11]*
<<locked>>
81%
31981
62%
**25
94%
SNPE Vectan SP 7
<<locked>>
81%
40959
80%
**79
95%
SNPE Vectan SP 9
<<locked>>
81%
39131
76%
**62
97%
SNPE Vectan Tubal 3000
<<locked>>
81%
41249
80%
**20
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
33779
66%
**66
99%
[SNPE Vectan Tubal 7000]*
<<locked>>
88%
35578
69%
**15
90%
[Shooters World Long Rifle]*
<<locked>>
84%
31879
62%
**62
90%
Shooters World Match Rifle
<<locked>>
81%
39030
76%
**76
99%
Shooters World Precision
<<locked>>
81%
35766
69%
**74
97%
Somchem S335
<<locked>>
81%
40799
79%
**23
100%
Somchem S341
<<locked>>
81%
40553
79%
**82
97%
Somchem S355
<<locked>>
81%
31792
62%
**95
95%
[Somchem S365]*
<<locked>>
83%
23786
46%
**11
91%
Vihtavuori N133
<<locked>>
81%
38740
75%
**71
100%
Vihtavuori N135
<<locked>>
81%
30545
59%
**49
99%
Vihtavuori N140
<<locked>>
81%
36985
72%
**84
99%
[Vihtavuori N150]*
<<locked>>
81%
26803
52%
**31
94%
[Vihtavuori N160]*
<<locked>>
83%
29414
57%
**26
90%
Vihtavuori N540
<<locked>>
81%
36709
71%
**97
99%
[Vihtavuori N550]*
<<locked>>
82%
29414
57%
**66
90%
[Vihtavuori N555]*
<<locked>>
93%
28108
55%
**72
91%
[Winchester 6.5 StaBALL]*
<<locked>>
81%
26977
52%
**25
91%
[Winchester 760]*
<<locked>>
86%
35969
70%
**30
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.

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