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Load data for 7 x 66 SE v. Hofe + .284 | 150gr | Barnes TTSX BT

Recommended Powder(s):

7 x 66 SE v. Hofe + .284 | 150gr | Barnes TTSX BT

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.284 | 150gr | Barnes TTSX BT
Manufacturer SKU:
30303
Bullet Weight:
150gr | 9.7g
Bullet Diameter:
0.284" | 7.21mm
Bullet Length:
<<locked>>
Caliber:
7 x 66 SE v. Hofe load data
Case Length (l3):
2.598" | 66.0mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
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_B573_C1097
Last updated:
2026-02-01
Recommended Twist Rate:
1:10 - 1:8

Load data for 138 loads in caliber 7 x 66 SE v. Hofe with .284 | 150gr | Barnes TTSX BT bullet and 69 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".

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  • We recommend you limit powder range to relevant brands to speed up re-calculation of results

    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.

    .

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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 2209 👍
<<locked>>
92%
56855
89%
**31
99%
ADI AR 2213
<<locked>>
95%
56971
89%
**77
99%
ADI AR 2217
<<locked>>
97%
44367
70%
**31
96%
ADI AR 2225
<<locked>>
97%
39740
62%
**95
98%
Accurate 3100
<<locked>>
95%
57000
89%
**79
100%
Accurate 4350
<<locked>>
86%
57072
89%
**92
100%
Accurate MAGPRO
<<locked>>
95%
57145
90%
**87
97%
Alliant Reloder-16
<<locked>>
88%
57029
89%
**41
100%
Alliant Reloder-17
<<locked>>
83%
57305
90%
**41
100%
Alliant Reloder-19 👍
<<locked>>
92%
57043
89%
**31
99%
Alliant Reloder-22
<<locked>>
95%
56971
89%
**68
99%
Alliant Reloder-23
<<locked>>
96%
56739
89%
**18
100%
Alliant Reloder-25
<<locked>>
97%
49864
78%
**76
100%
Alliant Reloder-26
<<locked>>
92%
57058
89%
**07
100%
Baschieri & Pellagri 109
<<locked>>
96%
57029
89%
**05
96%
Bofors RP15
<<locked>>
97%
55666
87%
**45
99%
Bofors RP30
<<locked>>
97%
45861
72%
**00
97%
Bofors RP5
<<locked>>
95%
56971
89%
**68
99%
Bofors RP7
<<locked>>
85%
57319
90%
**59
100%
Hodgdon H1000
<<locked>>
97%
44367
70%
**31
96%
Hodgdon H4350
<<locked>>
90%
57276
90%
**72
100%
Hodgdon H4831
<<locked>>
97%
55753
87%
**89
98%
Hodgdon H4831 SC
<<locked>>
94%
57203
90%
**18
98%
Hodgdon Hybrid 100V
<<locked>>
90%
57072
89%
**56
100%
Hodgdon LVR
<<locked>>
85%
57014
89%
**99
100%
Hodgdon Retumbo
<<locked>>
97%
39740
62%
**95
98%
Hodgdon Superperformance
<<locked>>
85%
57232
90%
**51
100%
Hodgdon TrailBoss
<<locked>>
96%
35114
55%
**41
100%
IMR 4166 Enduron
<<locked>>
83%
56985
89%
**33
100%
IMR 4350
<<locked>>
88%
56985
89%
**72
100%
IMR 4451 Enduron
<<locked>>
84%
57406
90%
**63
100%
IMR 4831
<<locked>>
91%
57058
89%
**79
100%
IMR 4955 Enduron
<<locked>>
95%
57116
90%
**86
98%
IMR 7828 SSC
<<locked>>
94%
56768
89%
**81
99%
[IMR 8133 Enduron]*
<<locked>>
97%
35433
56%
**80
93%
Lovex S065
<<locked>>
86%
56869
89%
**43
100%
Lovex S070
<<locked>>
87%
56913
89%
**69
100%
Lovex S071
<<locked>>
97%
50821
80%
**74
100%
Norma 204
<<locked>>
87%
56782
89%
**05
99%
Norma 217
<<locked>>
97%
35505
56%
**00
95%
Norma MRP 👍
<<locked>>
93%
57232
90%
**00
100%
Norma URP
<<locked>>
87%
57246
90%
**05
100%
Ramshot Grand
<<locked>>
92%
57029
89%
**00
99%
Ramshot Hunter
<<locked>>
88%
56971
89%
**25
100%
Ramshot Magnum
<<locked>>
95%
56855
89%
**51
100%
ReloadSwiss RS 14
<<locked>>
96%
36216
57%
**86
100%
ReloadSwiss RS 62
<<locked>>
86%
56681
89%
**12
100%
ReloadSwiss RS 70
<<locked>>
87%
57363
90%
**81
100%
ReloadSwiss RS 76
<<locked>>
97%
48950
77%
**22
100%
ReloadSwiss RS 80
<<locked>>
97%
44440
70%
**97
95%
Rottweil R 904
<<locked>>
91%
56782
89%
**89
99%
Rottweil R 905 👍
<<locked>>
92%
56666
89%
**18
99%
Rottweil R 907
<<locked>>
85%
57319
90%
**59
100%
SNPE Vectan Tubal 7000
<<locked>>
86%
57246
90%
**13
100%
Shooters World Long Rifle
<<locked>>
86%
56869
89%
**43
100%
Somchem S361
<<locked>>
90%
57058
89%
**59
98%
Somchem S365
<<locked>>
89%
56927
89%
**95
100%
Somchem S385
<<locked>>
92%
57014
89%
**89
100%
Vihtavuori N135
<<locked>>
83%
56724
89%
**38
100%
Vihtavuori N150
<<locked>>
88%
57276
90%
**97
100%
Vihtavuori N160
<<locked>>
85%
57217
90%
**66
100%
Vihtavuori N165
<<locked>>
97%
56014
88%
**59
99%
Vihtavuori N550
<<locked>>
85%
57217
90%
**99
100%
Vihtavuori N555
<<locked>>
93%
57188
90%
**25
100%
Vihtavuori N560
<<locked>>
95%
56884
89%
**94
98%
Vihtavuori N565
<<locked>>
97%
52257
82%
**89
98%
Vihtavuori N568
<<locked>>
97%
45484
71%
**13
95%
Winchester 6.5 StaBALL
<<locked>>
86%
57029
89%
**30
100%
Winchester StaBALL HD 👍
<<locked>>
97%
54911
86%
**17
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2209
<<locked>>
81%
39697
62%
**03
96%
[ADI AR 2213]*
<<locked>>
81%
35505
56%
**21
92%
[ADI AR 2217]*
<<locked>>
87%
32416
51%
**26
90%
[ADI AR 2225]*
<<locked>>
85%
27151
43%
**11
90%
Accurate 3100
<<locked>>
81%
35404
55%
**75
97%
Accurate 4350
<<locked>>
81%
47514
74%
**41
100%
[Accurate MAGPRO]*
<<locked>>
83%
36245
57%
**64
90%
Alliant Reloder-16
<<locked>>
81%
45440
71%
**44
100%
Alliant Reloder-17
<<locked>>
81%
52591
82%
**66
100%
Alliant Reloder-19
<<locked>>
81%
39595
62%
**00
96%
[Alliant Reloder-22]*
<<locked>>
81%
35418
56%
**38
94%
Alliant Reloder-23
<<locked>>
81%
33997
53%
**98
99%
Alliant Reloder-25
<<locked>>
81%
29515
46%
**93
95%
Alliant Reloder-26
<<locked>>
81%
37434
59%
**49
99%
[Baschieri & Pellagri 109]*
<<locked>>
85%
39972
63%
**61
90%
[Bofors RP15]*
<<locked>>
81%
32880
52%
**62
93%
[Bofors RP30]*
<<locked>>
85%
30458
48%
**20
90%
[Bofors RP5]*
<<locked>>
81%
35418
56%
**38
94%
Bofors RP7
<<locked>>
81%
50386
79%
**51
99%
[Hodgdon H1000]*
<<locked>>
87%
32416
51%
**26
90%
Hodgdon H4350
<<locked>>
81%
43439
68%
**26
98%
[Hodgdon H4831]*
<<locked>>
81%
33243
52%
**20
90%
[Hodgdon H4831 SC]*
<<locked>>
81%
37115
58%
**18
92%
Hodgdon Hybrid 100V
<<locked>>
81%
43192
68%
**33
100%
Hodgdon LVR
<<locked>>
81%
49850
78%
**81
100%
[Hodgdon Retumbo]*
<<locked>>
85%
27151
43%
**11
90%
Hodgdon Superperformance
<<locked>>
81%
49124
77%
**13
99%
Hodgdon TrailBoss
<<locked>>
81%
28297
44%
**93
100%
IMR 4166 Enduron
<<locked>>
81%
53388
84%
**77
100%
IMR 4350
<<locked>>
81%
45455
71%
**66
98%
IMR 4451 Enduron
<<locked>>
81%
51764
81%
**74
99%
IMR 4831
<<locked>>
81%
41176
65%
**07
100%
[IMR 4955 Enduron]*
<<locked>>
81%
37492
59%
**92
93%
[IMR 7828 SSC]*
<<locked>>
81%
36172
57%
**54
93%
[IMR 8133 Enduron]*
<<locked>>
93%
31691
50%
**66
90%
Lovex S065
<<locked>>
81%
49153
77%
**15
100%
Lovex S070
<<locked>>
81%
47427
74%
**08
99%
Lovex S071
<<locked>>
81%
30472
48%
**44
95%
Norma 204
<<locked>>
81%
45629
72%
**12
97%
[Norma 217]*
<<locked>>
89%
27369
43%
**57
90%
Norma MRP
<<locked>>
81%
36869
58%
**03
96%
Norma URP
<<locked>>
81%
46615
73%
**31
100%
[Ramshot Grand]*
<<locked>>
81%
37536
59%
**03
94%
Ramshot Hunter
<<locked>>
81%
45527
71%
**28
99%
[Ramshot Magnum]*
<<locked>>
81%
32634
51%
**59
94%
ReloadSwiss RS 14
<<locked>>
81%
28790
45%
**29
100%
ReloadSwiss RS 62
<<locked>>
81%
47442
74%
**54
100%
ReloadSwiss RS 70
<<locked>>
81%
45730
72%
**77
100%
[ReloadSwiss RS 76]*
<<locked>>
81%
27905
44%
**61
90%
[ReloadSwiss RS 80]*
<<locked>>
90%
34925
55%
**64
90%
Rottweil R 904
<<locked>>
81%
41089
64%
**87
95%
Rottweil R 905
<<locked>>
81%
38870
61%
**80
96%
Rottweil R 907
<<locked>>
81%
50386
79%
**51
99%
SNPE Vectan Tubal 7000
<<locked>>
81%
48080
75%
**69
99%
Shooters World Long Rifle
<<locked>>
81%
49153
77%
**15
100%
[Somchem S361]*
<<locked>>
81%
41901
66%
**71
94%
Somchem S365
<<locked>>
81%
43468
68%
**79
100%
Somchem S385
<<locked>>
81%
39595
62%
**67
97%
Vihtavuori N135
<<locked>>
81%
52953
83%
**89
100%
Vihtavuori N150
<<locked>>
81%
46789
73%
**33
100%
Vihtavuori N160
<<locked>>
81%
49908
78%
**51
100%
[Vihtavuori N165]*
<<locked>>
81%
33243
52%
**10
94%
Vihtavuori N550
<<locked>>
81%
50792
80%
**97
100%
Vihtavuori N555
<<locked>>
81%
38189
60%
**84
99%
[Vihtavuori N560]*
<<locked>>
81%
35505
56%
**51
92%
[Vihtavuori N565]*
<<locked>>
83%
32053
50%
**49
90%
[Vihtavuori N568]*
<<locked>>
90%
36361
57%
**97
90%
Winchester 6.5 StaBALL
<<locked>>
81%
47224
74%
**85
100%
Winchester StaBALL HD
<<locked>>
81%
29602
46%
**18
100%

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

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