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Load data for 7 x 66 SE v. Hofe + .284 | 139gr Hornady CX

Recommended Powder(s): Alliant Reloder-26, Hodgdon H4350, Norma MRP, Somchem S385, Winchester StaBALL HD

7 x 66 SE v. Hofe + .284 | 139gr Hornady CX

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.284 | 139gr Hornady CX
Manufacturer SKU:
282704
Bullet Weight:
139gr | 9.0g
Bullet Diameter:
0.284" | 7.21mm
Bullet Length:
1.380" | 35.1mm
Caliber:
7 x 66 SE v. Hofe load data
Case Length (l3):
2.598" | 66.0mm
Cartridge Length (C.O.L.):
3.257" | 82.7mm
Seated Depth:
0.721" | 18.3mm
Shank Seated Depth:
0.580" | 14.7mm
Case Capacity:
93.0 Grains of Water | 6.04 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B1367_C1097
Last updated:
2025-01-01
Recommended Twist Rate:
1:10 - 1:8

Load data for 144 loads in caliber 7 x 66 SE v. Hofe with .284 | 139gr Hornady CX bullet and 72 powders such as Alliant Reloder-26, Hodgdon H4350, Norma MRP, Somchem S385, 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%
57377
90%
**54
100%
ADI AR 2209
<<locked>>
93%
57290
90%
**43
99%
ADI AR 2213
<<locked>>
96%
57232
90%
**69
98%
[ADI AR 2217]*
<<locked>>
97%
42090
66%
**61
94%
ADI AR 2225
<<locked>>
97%
37985
60%
**25
96%
Accurate 2700
<<locked>>
84%
57101
89%
**05
99%
Accurate 3100
<<locked>>
96%
56768
89%
**68
100%
Accurate 4350
<<locked>>
88%
57087
89%
**97
100%
Accurate MAGPRO
<<locked>>
97%
57421
90%
**86
96%
Alliant Reloder-16
<<locked>>
89%
57406
90%
**56
100%
Alliant Reloder-17
<<locked>>
85%
57058
89%
**50
100%
Alliant Reloder-19
<<locked>>
93%
56884
89%
**27
99%
Alliant Reloder-22
<<locked>>
96%
56942
89%
**73
99%
Alliant Reloder-23
<<locked>>
97%
55071
86%
**10
100%
Alliant Reloder-25
<<locked>>
97%
47790
75%
**41
100%
Alliant Reloder-26 👍
<<locked>>
94%
56681
89%
**15
100%
[Hodgdon H1000]*
<<locked>>
97%
42090
66%
**61
94%
Hodgdon H414
<<locked>>
84%
56985
89%
**27
100%
Hodgdon H4350 👍
<<locked>>
91%
57174
90%
**77
99%
Hodgdon H4831
<<locked>>
97%
53693
84%
**54
97%
Hodgdon H4831 SC
<<locked>>
95%
57421
90%
**10
97%
Hodgdon Hybrid 100V
<<locked>>
91%
56623
89%
**51
100%
Hodgdon LVR
<<locked>>
86%
57232
90%
**10
100%
Hodgdon Retumbo
<<locked>>
97%
37985
60%
**25
96%
Hodgdon Superperformance
<<locked>>
86%
56797
89%
**56
100%
Hodgdon VARGET
<<locked>>
83%
57145
90%
**45
100%
Hodgdon TrailBoss
<<locked>>
97%
35360
55%
**13
100%
IMR 4064
<<locked>>
84%
57348
90%
**35
100%
IMR 4166 Enduron
<<locked>>
84%
57305
90%
**38
100%
IMR 4350
<<locked>>
89%
56782
89%
**74
99%
IMR 4451 Enduron
<<locked>>
85%
56855
89%
**58
100%
IMR 4831
<<locked>>
93%
56637
89%
**74
100%
IMR 4955 Enduron
<<locked>>
96%
56913
89%
**77
98%
IMR 7828 SSC
<<locked>>
95%
56753
89%
**82
98%
Lovex S065
<<locked>>
87%
56826
89%
**45
100%
Lovex S070
<<locked>>
88%
56869
89%
**68
100%
Lovex S071
<<locked>>
97%
48863
77%
**46
99%
Norma 204
<<locked>>
89%
56782
89%
**04
99%
[Norma 217]*
<<locked>>
97%
33721
53%
**36
93%
Norma MRP 👍
<<locked>>
94%
56811
89%
**96
100%
Norma URP
<<locked>>
88%
56855
89%
**00
100%
Ramshot Hunter
<<locked>>
89%
57000
89%
**27
100%
Ramshot Magnum
<<locked>>
97%
56971
89%
**50
99%
ReloadSwiss RS 14
<<locked>>
97%
36100
57%
**59
100%
ReloadSwiss RS 60
<<locked>>
85%
56637
89%
**59
100%
ReloadSwiss RS 62
<<locked>>
88%
57392
90%
**20
100%
ReloadSwiss RS 70
<<locked>>
89%
57406
90%
**79
100%
ReloadSwiss RS 76
<<locked>>
97%
46238
72%
**54
99%
[ReloadSwiss RS 80]*
<<locked>>
97%
41945
66%
**27
93%
Rottweil R 903
<<locked>>
83%
57000
89%
**45
100%
Rottweil R 904
<<locked>>
93%
57392
90%
**91
98%
Rottweil R 905
<<locked>>
94%
57217
90%
**30
99%
Rottweil R 907
<<locked>>
86%
56826
89%
**58
99%
SNPE Vectan Tubal 5000
<<locked>>
84%
57203
90%
**13
100%
SNPE Vectan Tubal 7000
<<locked>>
87%
57072
89%
**09
100%
Shooters World Long Rifle
<<locked>>
87%
56826
89%
**45
100%
Somchem S355
<<locked>>
84%
56869
89%
**45
100%
Somchem S361
<<locked>>
91%
56681
89%
**45
97%
Somchem S365
<<locked>>
90%
57072
89%
**07
100%
Somchem S385 👍
<<locked>>
94%
57334
90%
**04
99%
Vihtavuori N135
<<locked>>
85%
57058
89%
**49
100%
Vihtavuori N150
<<locked>>
89%
57421
90%
**05
100%
Vihtavuori N160
<<locked>>
86%
57261
90%
**74
100%
Vihtavuori N165
<<locked>>
97%
53200
83%
**12
99%
Vihtavuori N550
<<locked>>
86%
56855
89%
**07
100%
Vihtavuori N555
<<locked>>
94%
56420
88%
**14
100%
Vihtavuori N560
<<locked>>
96%
56753
89%
**96
98%
Vihtavuori N565
<<locked>>
97%
49951
78%
**45
96%
[Vihtavuori N568]*
<<locked>>
97%
43134
68%
**40
92%
Winchester 6.5 StaBALL
<<locked>>
88%
56884
89%
**28
100%
Winchester 760
<<locked>>
84%
56985
89%
**27
100%
Winchester StaBALL HD 👍
<<locked>>
97%
51982
81%
**82
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2208
<<locked>>
81%
53838
84%
**95
100%
[ADI AR 2209]*
<<locked>>
81%
37855
59%
**43
94%
[ADI AR 2213]*
<<locked>>
81%
34461
54%
**77
90%
[ADI AR 2217]*
<<locked>>
90%
34432
54%
**61
90%
[ADI AR 2225]*
<<locked>>
89%
29196
46%
**56
90%
Accurate 2700
<<locked>>
81%
52228
82%
**33
99%
Accurate 3100
<<locked>>
81%
34011
53%
**15
96%
Accurate 4350
<<locked>>
81%
45788
72%
**04
100%
[Accurate MAGPRO]*
<<locked>>
86%
38580
60%
**02
90%
Alliant Reloder-16
<<locked>>
81%
43511
68%
**07
100%
Alliant Reloder-17
<<locked>>
81%
50459
79%
**45
100%
[Alliant Reloder-19]*
<<locked>>
81%
38087
60%
**49
94%
[Alliant Reloder-22]*
<<locked>>
81%
33721
53%
**74
92%
Alliant Reloder-23
<<locked>>
81%
32372
51%
**44
99%
[Alliant Reloder-25]*
<<locked>>
81%
28210
44%
**26
93%
Alliant Reloder-26
<<locked>>
81%
35259
55%
**76
98%
[Hodgdon H1000]*
<<locked>>
90%
34432
54%
**61
90%
Hodgdon H414
<<locked>>
81%
51271
80%
**22
99%
Hodgdon H4350
<<locked>>
81%
41713
65%
**79
97%
[Hodgdon H4831]*
<<locked>>
84%
35056
55%
**51
90%
[Hodgdon H4831 SC]*
<<locked>>
81%
35520
56%
**61
90%
Hodgdon Hybrid 100V
<<locked>>
81%
41104
64%
**89
100%
Hodgdon LVR
<<locked>>
81%
48066
75%
**56
100%
[Hodgdon Retumbo]*
<<locked>>
89%
29196
46%
**56
90%
Hodgdon Superperformance
<<locked>>
81%
47007
74%
**69
98%
Hodgdon VARGET
<<locked>>
81%
53476
84%
**82
100%
Hodgdon TrailBoss
<<locked>>
81%
28036
44%
**52
100%
IMR 4064
<<locked>>
81%
52953
83%
**66
100%
IMR 4166 Enduron
<<locked>>
81%
51547
81%
**46
99%
IMR 4350
<<locked>>
81%
43743
69%
**25
97%
IMR 4451 Enduron
<<locked>>
81%
50024
78%
**43
99%
IMR 4831
<<locked>>
81%
39363
62%
**62
99%
[IMR 4955 Enduron]*
<<locked>>
81%
35998
56%
**38
91%
[IMR 7828 SSC]*
<<locked>>
81%
34548
54%
**87
90%
Lovex S065
<<locked>>
81%
47427
74%
**81
99%
Lovex S070
<<locked>>
81%
45542
71%
**67
98%
[Lovex S071]*
<<locked>>
81%
29051
46%
**77
93%
Norma 204
<<locked>>
81%
44019
69%
**64
96%
[Norma 217]*
<<locked>>
92%
29095
46%
**89
90%
Norma MRP
<<locked>>
81%
35273
55%
**43
95%
Norma URP
<<locked>>
81%
44570
70%
**87
100%
Ramshot Hunter
<<locked>>
81%
43714
69%
**81
98%
[Ramshot Magnum]*
<<locked>>
81%
31212
49%
**95
92%
ReloadSwiss RS 14
<<locked>>
81%
28761
45%
**95
100%
ReloadSwiss RS 60
<<locked>>
81%
48457
76%
**28
100%
ReloadSwiss RS 62
<<locked>>
81%
45542
71%
**23
100%
ReloadSwiss RS 70
<<locked>>
81%
43526
68%
**33
99%
[ReloadSwiss RS 76]*
<<locked>>
84%
29269
46%
**85
90%
[ReloadSwiss RS 80]*
<<locked>>
93%
36999
58%
**02
90%
Rottweil R 903
<<locked>>
81%
52533
82%
**76
100%
[Rottweil R 904]*
<<locked>>
81%
39494
62%
**40
93%
[Rottweil R 905]*
<<locked>>
81%
37434
59%
**33
94%
Rottweil R 907
<<locked>>
81%
48414
76%
**10
98%
SNPE Vectan Tubal 5000
<<locked>>
81%
52895
83%
**54
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
46630
73%
**31
98%
Shooters World Long Rifle
<<locked>>
81%
47427
74%
**81
99%
Somchem S355
<<locked>>
81%
52576
82%
**72
100%
[Somchem S361]*
<<locked>>
81%
40045
63%
**23
93%
Somchem S365
<<locked>>
81%
41336
65%
**38
100%
Somchem S385
<<locked>>
81%
37840
59%
**13
95%
Vihtavuori N135
<<locked>>
81%
51242
80%
**67
100%
Vihtavuori N150
<<locked>>
81%
45049
71%
**05
100%
Vihtavuori N160
<<locked>>
81%
48080
75%
**13
100%
[Vihtavuori N165]*
<<locked>>
81%
31734
50%
**49
92%
Vihtavuori N550
<<locked>>
81%
48602
76%
**56
100%
Vihtavuori N555
<<locked>>
81%
36303
57%
**33
99%
[Vihtavuori N560]*
<<locked>>
82%
35215
55%
**26
90%
[Vihtavuori N565]*
<<locked>>
86%
34026
53%
**77
90%
[Vihtavuori N568]*
<<locked>>
93%
38682
61%
**38
90%
Winchester 6.5 StaBALL
<<locked>>
81%
45310
71%
**44
100%
Winchester 760
<<locked>>
81%
51271
80%
**22
99%
Winchester StaBALL HD
<<locked>>
81%
27557
43%
**44
98%

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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