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Load data for .257 Weath. Mag. + .257 | 90gr | Hammer Absolute Hammer

Recommended Powder(s): Alliant Reloder-23, Alliant Reloder-26, IMR 4831, Vihtavuori N555, Winchester StaBALL HD

.257 Weath. Mag. + .257 | 90gr | Hammer Absolute Hammer

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.257 | 90gr | Hammer Absolute Hammer
Manufacturer SKU:
25090AH
Bullet Weight:
90gr | 5.8g
Bullet Diameter:
0.257" | 6.53mm
Bullet Length:
1.050" | 26.7mm
Caliber:
.257 Weath. Mag. load data
Case Length (l3):
2.549" | 64.7mm
Cartridge Length (C.O.L.):
3.122" | 79.3mm
Seated Depth:
0.477" | 12.1mm
Shank Seated Depth:
0.339" | 8.6mm
Case Capacity:
84.0 Grains of Water | 5.45 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B10939_C247
Last updated:
2025-02-02
Recommended Twist Rate:
1:11 - 1:9

Load data for 138 loads in caliber .257 Weath. Mag. with .257 | 90gr | Hammer Absolute Hammer bullet and 69 powders such as Alliant Reloder-23, Alliant Reloder-26, IMR 4831, Vihtavuori N555, Winchester StaBALL HD. 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 2208
<<locked>>
83%
57145
90%
**12
100%
ADI AR 2209
<<locked>>
93%
56681
89%
**68
98%
ADI AR 2213
<<locked>>
96%
56811
89%
**04
97%
[ADI AR 2217]*
<<locked>>
97%
41945
66%
**43
92%
[ADI AR 2225]*
<<locked>>
97%
37652
59%
**94
94%
Accurate 2700
<<locked>>
84%
57203
90%
**50
99%
Accurate 3100
<<locked>>
96%
57058
89%
**19
100%
Accurate 4350
<<locked>>
88%
57101
89%
**45
100%
Accurate MAGPRO
<<locked>>
97%
57363
90%
**17
95%
Alliant Reloder-16
<<locked>>
89%
56811
89%
**04
100%
Alliant Reloder-17
<<locked>>
85%
57217
90%
**10
100%
Alliant Reloder-19
<<locked>>
93%
56942
89%
**71
98%
Alliant Reloder-22
<<locked>>
97%
57435
90%
**14
98%
Alliant Reloder-23 👍
<<locked>>
97%
54839
86%
**48
100%
Alliant Reloder-25
<<locked>>
97%
47790
75%
**63
99%
Alliant Reloder-26 👍
<<locked>>
93%
56869
89%
**50
100%
[Hodgdon H1000]*
<<locked>>
97%
41945
66%
**43
92%
Hodgdon H414
<<locked>>
84%
57145
90%
**78
99%
Hodgdon H4350
<<locked>>
91%
57087
89%
**12
99%
Hodgdon H4831
<<locked>>
97%
53737
84%
**76
95%
Hodgdon H4831 SC
<<locked>>
95%
56942
89%
**42
96%
Hodgdon Hybrid 100V
<<locked>>
91%
57072
89%
**06
100%
Hodgdon LVR
<<locked>>
87%
57000
89%
**55
100%
[Hodgdon Retumbo]*
<<locked>>
97%
37652
59%
**94
94%
Hodgdon Superperformance
<<locked>>
86%
56985
89%
**91
99%
Hodgdon VARGET
<<locked>>
84%
57435
90%
**12
100%
Hodgdon TrailBoss
<<locked>>
96%
34940
55%
**01
100%
IMR 4064
<<locked>>
84%
56840
89%
**96
100%
IMR 4166 Enduron
<<locked>>
85%
56956
89%
**99
99%
IMR 4350
<<locked>>
90%
57290
90%
**22
99%
IMR 4451 Enduron
<<locked>>
85%
56869
89%
**12
99%
IMR 4831 👍
<<locked>>
93%
57217
90%
**42
100%
IMR 4955 Enduron
<<locked>>
96%
57217
90%
**22
96%
IMR 7828 SSC
<<locked>>
95%
56811
89%
**17
97%
Lovex S065
<<locked>>
87%
56971
89%
**02
100%
Lovex S070
<<locked>>
88%
57334
90%
**32
99%
Lovex S071
<<locked>>
97%
48501
76%
**51
98%
Norma 204
<<locked>>
89%
57392
90%
**61
98%
Norma MRP
<<locked>>
94%
56434
88%
**30
99%
Norma URP
<<locked>>
89%
57246
90%
**55
100%
Ramshot Hunter
<<locked>>
89%
56695
89%
**68
100%
Ramshot Magnum
<<locked>>
97%
57217
90%
**78
99%
ReloadSwiss RS 14
<<locked>>
96%
35708
56%
**51
100%
ReloadSwiss RS 60
<<locked>>
86%
56913
89%
**20
100%
ReloadSwiss RS 62
<<locked>>
87%
56753
89%
**61
100%
ReloadSwiss RS 70
<<locked>>
88%
56623
89%
**14
100%
ReloadSwiss RS 76
<<locked>>
97%
47137
74%
**83
98%
Rottweil R 903
<<locked>>
84%
56724
89%
**02
100%
Rottweil R 904
<<locked>>
92%
56695
89%
**12
97%
Rottweil R 905
<<locked>>
94%
57232
90%
**74
98%
Rottweil R 907
<<locked>>
86%
56869
89%
**99
99%
SNPE Vectan Tubal 5000
<<locked>>
84%
57261
90%
**81
100%
SNPE Vectan Tubal 7000
<<locked>>
87%
56884
89%
**53
99%
Shooters World Long Rifle
<<locked>>
87%
56971
89%
**02
100%
Somchem S355
<<locked>>
84%
57363
90%
**06
100%
Somchem S361
<<locked>>
91%
57043
89%
**79
96%
Somchem S365
<<locked>>
90%
56985
89%
**51
100%
Somchem S385
<<locked>>
94%
57305
90%
**32
99%
Vihtavuori N135
<<locked>>
85%
57246
90%
**23
100%
Vihtavuori N150
<<locked>>
89%
56956
89%
**50
100%
Vihtavuori N160
<<locked>>
86%
57435
90%
**12
100%
Vihtavuori N165
<<locked>>
97%
53200
83%
**40
98%
Vihtavuori N550
<<locked>>
86%
57435
90%
**65
100%
Vihtavuori N555 👍
<<locked>>
95%
56652
89%
**58
100%
Vihtavuori N560
<<locked>>
96%
57072
89%
**20
96%
Vihtavuori N565
<<locked>>
97%
50154
79%
**53
95%
Winchester 6.5 StaBALL
<<locked>>
88%
57363
90%
**83
100%
Winchester 760
<<locked>>
84%
57145
90%
**78
99%
Winchester StaBALL HD 👍
<<locked>>
97%
52243
82%
**14
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2208
<<locked>>
81%
53200
83%
**37
100%
[ADI AR 2209]*
<<locked>>
81%
37608
59%
**48
92%
[ADI AR 2213]*
<<locked>>
85%
38769
61%
**77
90%
[ADI AR 2217]*
<<locked>>
94%
38392
60%
**51
90%
[ADI AR 2225]*
<<locked>>
92%
32343
51%
**13
90%
Accurate 2700
<<locked>>
81%
51895
81%
**61
98%
[Accurate 3100]*
<<locked>>
81%
33272
52%
**77
93%
Accurate 4350
<<locked>>
81%
44875
70%
**19
99%
[Accurate MAGPRO]*
<<locked>>
89%
43236
68%
**09
90%
Alliant Reloder-16
<<locked>>
81%
42873
67%
**19
99%
Alliant Reloder-17
<<locked>>
81%
50009
78%
**76
100%
[Alliant Reloder-19]*
<<locked>>
81%
37492
59%
**31
92%
[Alliant Reloder-22]*
<<locked>>
82%
34258
54%
**72
90%
Alliant Reloder-23
<<locked>>
81%
31995
50%
**13
97%
[Alliant Reloder-25]*
<<locked>>
81%
28282
44%
**92
90%
Alliant Reloder-26
<<locked>>
81%
35157
55%
**68
96%
[Hodgdon H1000]*
<<locked>>
94%
38392
60%
**51
90%
Hodgdon H414
<<locked>>
81%
51039
80%
**66
98%
Hodgdon H4350
<<locked>>
81%
41205
65%
**87
95%
[Hodgdon H4831]*
<<locked>>
88%
39363
62%
**58
90%
[Hodgdon H4831 SC]*
<<locked>>
84%
39363
62%
**58
90%
Hodgdon Hybrid 100V
<<locked>>
81%
40538
64%
**87
99%
Hodgdon LVR
<<locked>>
81%
47355
74%
**68
99%
[Hodgdon Retumbo]*
<<locked>>
92%
32343
51%
**13
90%
Hodgdon Superperformance
<<locked>>
81%
46369
73%
**78
97%
Hodgdon VARGET
<<locked>>
81%
52924
83%
**37
100%
Hodgdon TrailBoss
<<locked>>
81%
27905
44%
**21
100%
IMR 4064
<<locked>>
81%
52228
82%
**14
100%
IMR 4166 Enduron
<<locked>>
81%
50894
80%
**78
98%
IMR 4350
<<locked>>
81%
43250
68%
**36
96%
IMR 4451 Enduron
<<locked>>
81%
49487
78%
**71
98%
IMR 4831
<<locked>>
81%
38624
61%
**45
97%
[IMR 4955 Enduron]*
<<locked>>
84%
38725
61%
**09
90%
[IMR 7828 SSC]*
<<locked>>
84%
38667
61%
**00
90%
Lovex S065
<<locked>>
81%
46891
73%
**05
98%
Lovex S070
<<locked>>
81%
45223
71%
**76
97%
[Lovex S071]*
<<locked>>
81%
28601
45%
**30
90%
[Norma 204]*
<<locked>>
81%
43584
68%
**69
94%
[Norma MRP]*
<<locked>>
81%
34969
55%
**28
92%
Norma URP
<<locked>>
81%
44106
69%
**92
99%
Ramshot Hunter
<<locked>>
81%
43178
68%
**86
97%
[Ramshot Magnum]*
<<locked>>
83%
32880
52%
**04
90%
ReloadSwiss RS 14
<<locked>>
81%
28631
45%
**77
100%
ReloadSwiss RS 60
<<locked>>
81%
48153
75%
**63
100%
ReloadSwiss RS 62
<<locked>>
81%
44976
70%
**38
99%
ReloadSwiss RS 70
<<locked>>
81%
43410
68%
**38
98%
[ReloadSwiss RS 76]*
<<locked>>
87%
32750
51%
**63
90%
Rottweil R 903
<<locked>>
81%
52185
82%
**20
100%
[Rottweil R 904]*
<<locked>>
81%
38957
61%
**22
91%
[Rottweil R 905]*
<<locked>>
81%
36608
57%
**05
92%
Rottweil R 907
<<locked>>
81%
48022
75%
**22
97%
SNPE Vectan Tubal 5000
<<locked>>
81%
52504
82%
**05
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
45919
72%
**40
97%
Shooters World Long Rifle
<<locked>>
81%
46891
73%
**05
98%
Somchem S355
<<locked>>
81%
51982
81%
**10
100%
[Somchem S361]*
<<locked>>
81%
39943
63%
**15
91%
Somchem S365
<<locked>>
81%
40785
64%
**50
100%
[Somchem S385]*
<<locked>>
81%
37318
58%
**95
93%
Vihtavuori N135
<<locked>>
81%
50328
79%
**09
100%
Vihtavuori N150
<<locked>>
81%
44643
70%
**27
100%
Vihtavuori N160
<<locked>>
81%
47601
75%
**45
99%
[Vihtavuori N165]*
<<locked>>
82%
32256
51%
**41
90%
Vihtavuori N550
<<locked>>
81%
48399
76%
**94
99%
Vihtavuori N555
<<locked>>
81%
35882
56%
**15
97%
[Vihtavuori N560]*
<<locked>>
86%
39479
62%
**23
90%
[Vihtavuori N565]*
<<locked>>
89%
38406
60%
**77
90%
Winchester 6.5 StaBALL
<<locked>>
81%
45020
71%
**56
100%
Winchester 760
<<locked>>
81%
51039
80%
**66
98%
Winchester StaBALL HD
<<locked>>
81%
26948
42%
**77
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.

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