top of page

Load data for 7 mm Backcountry + .284 | 145gr | Prvi Partizan SP

Recommended Powder(s): Hodgdon H414, Hodgdon H4350, Hodgdon Superformance, ReloadSwiss RS 70, Winchester 760

7 mm Backcountry + .284 | 145gr | Prvi Partizan SP

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.284 | 145gr | Prvi Partizan SP
Manufacturer SKU:
B-123
Bullet Weight:
145gr | 9.4g
Bullet Diameter:
0.284" | 7.21mm
Bullet Length:
<<locked>>
Caliber:
7 mm Backcountry load data
Case Length (l3):
2.417" | 61.4mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
Case Capacity:
73.0 Grains of Water | 4.74 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
79916 psi | 5510 bar
LID:
LID_B9121_C991
Last updated:
2026-07-16

Load data for 256 loads in caliber 7 mm Backcountry with .284 | 145gr | Prvi Partizan SP bullet and 128 powders such as Hodgdon H414, Hodgdon H4350, Hodgdon Superformance, ReloadSwiss RS 70, Winchester 760. 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".

  • No data yet

  • 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.

    .

    Loading_icon.gif

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 APS 450
<<locked>>
92%
71228
89%
**18
101%
ADI AR 2206H
<<locked>>
89%
71576
90%
**10
100%
ADI AR 2208
<<locked>>
94%
70866
89%
**94
100%
ADI AR 2209
<<locked>>
97%
54766
69%
**63
98%
ADI AR 2213
<<locked>>
97%
49792
62%
**07
95%
ADI Benchmark 8208
<<locked>>
87%
71025
89%
**64
100%
Accurate 2015
<<locked>>
86%
71243
89%
**66
100%
Accurate 2495
<<locked>>
90%
71272
89%
**95
100%
Accurate 2520
<<locked>>
85%
71228
89%
**54
100%
Accurate 2700
<<locked>>
91%
71431
89%
**71
100%
Accurate 3100
<<locked>>
97%
48225
60%
**08
99%
Accurate 4064
<<locked>>
92%
71446
89%
**51
100%
Accurate 4350
<<locked>>
97%
66094
83%
**97
100%
[Accurate MAGPRO]*
<<locked>>
97%
50705
63%
**56
94%
Alliant AR-Comp
<<locked>>
86%
71025
89%
**92
100%
Alliant Power Pro 2000-MR
<<locked>>
89%
71315
89%
**32
100%
Alliant Reloder- TS 15.5
<<locked>>
93%
71098
89%
**04
100%
Alliant Reloder-10x
<<locked>>
83%
71069
89%
**72
100%
Alliant Reloder-15
<<locked>>
91%
71083
89%
**27
100%
Alliant Reloder-16
<<locked>>
97%
62627
78%
**07
100%
Alliant Reloder-17
<<locked>>
96%
71837
90%
**05
100%
Alliant Reloder-19
<<locked>>
97%
54186
68%
**53
98%
Alliant Reloder-22
<<locked>>
97%
48559
61%
**00
97%
Alliant Reloder-23
<<locked>>
97%
46151
58%
**48
100%
Alliant Reloder-25
<<locked>>
97%
39697
50%
**46
98%
Alliant Reloder-26
<<locked>>
97%
52083
65%
**28
100%
Baschieri & Pellagri 107
<<locked>>
88%
71504
89%
**27
100%
Bofors RP15
<<locked>>
97%
44135
55%
**15
95%
Bofors RP3
<<locked>>
93%
71446
89%
**07
100%
Bofors RP5
<<locked>>
97%
48559
61%
**00
97%
Bofors RP7
<<locked>>
97%
70372
88%
**00
100%
Hodgdon BL-C2
<<locked>>
87%
71547
90%
**97
100%
Hodgdon Benchmark
<<locked>>
87%
71083
89%
**22
100%
Hodgdon CFE223
<<locked>>
84%
71910
90%
**92
100%
[Hodgdon H1000]*
<<locked>>
97%
39682
50%
**77
92%
Hodgdon H380
<<locked>>
92%
71257
89%
**23
100%
Hodgdon H414 👍
<<locked>>
97%
68530
86%
**59
100%
Hodgdon H4350 👍
<<locked>>
96%
71779
90%
**56
100%
Hodgdon H4831
<<locked>>
97%
52982
66%
**04
95%
Hodgdon H4831 SC
<<locked>>
97%
52243
65%
**97
95%
Hodgdon H4895
<<locked>>
88%
71489
89%
**04
100%
Hodgdon Hybrid 100V
<<locked>>
97%
58436
73%
**56
100%
Hodgdon LEVERevolution
<<locked>>
89%
70706
88%
**27
100%
[Hodgdon Retumbo]*
<<locked>>
97%
39305
49%
**69
94%
Hodgdon Superformance 👍
<<locked>>
97%
70779
89%
**12
100%
Hodgdon TrailBoss
<<locked>>
96%
34432
43%
**78
100%
Hodgdon VARGET
<<locked>>
90%
71765
90%
**97
100%
IMR 3031
<<locked>>
88%
71156
89%
**58
100%
IMR 4064
<<locked>>
92%
71736
90%
**87
100%
IMR 4166 Enduron
<<locked>>
91%
71127
89%
**94
100%
IMR 4198
<<locked>>
84%
70967
89%
**36
100%
IMR 4350
<<locked>>
97%
62584
78%
**22
99%
IMR 4451 Enduron
<<locked>>
97%
71750
90%
**27
100%
IMR 4831
<<locked>>
97%
62033
78%
**25
100%
IMR 4895
<<locked>>
91%
71895
90%
**40
100%
IMR 4955 Enduron
<<locked>>
97%
54360
68%
**87
96%
[IMR 7828 SSC]*
<<locked>>
97%
47094
59%
**64
94%
IMR 8208 XBR
<<locked>>
87%
71025
89%
**64
100%
Lovex D073.6
<<locked>>
88%
71562
90%
**68
100%
Lovex S060
<<locked>>
90%
71156
89%
**45
100%
Lovex S062
<<locked>>
92%
71765
90%
**77
100%
Lovex S065
<<locked>>
97%
67965
85%
**64
100%
Lovex S070
<<locked>>
97%
65209
82%
**58
100%
Lovex S071
<<locked>>
97%
40828
51%
**77
97%
Norma 201
<<locked>>
90%
71402
89%
**64
100%
Norma 202
<<locked>>
89%
71417
89%
**48
100%
Norma 203B
<<locked>>
92%
71286
89%
**27
100%
Norma 204
<<locked>>
97%
64092
80%
**77
99%
Norma MRP
<<locked>>
97%
51053
64%
**76
98%
Norma URP
<<locked>>
97%
63933
80%
**71
100%
Ramshot Big Game
<<locked>>
91%
71141
89%
**33
100%
Ramshot Grand
<<locked>>
97%
46615
58%
**64
95%
Ramshot Hunter
<<locked>>
97%
62671
78%
**77
100%
Ramshot Magnum
<<locked>>
97%
42206
53%
**56
95%
Ramshot TAC
<<locked>>
87%
70982
89%
**07
100%
Ramshot Wild Boar
<<locked>>
87%
71591
90%
**10
100%
Ramshot X-Terminator
<<locked>>
85%
71431
89%
**71
100%
ReloadSwiss RS 14
<<locked>>
97%
35534
44%
**27
100%
ReloadSwiss RS 40
<<locked>>
84%
71286
89%
**48
100%
ReloadSwiss RS 50
<<locked>>
93%
71446
89%
**14
100%
ReloadSwiss RS 52
<<locked>>
88%
71185
89%
**86
100%
ReloadSwiss RS 60
<<locked>>
94%
71649
90%
**99
100%
ReloadSwiss RS 62
<<locked>>
97%
66369
83%
**30
100%
ReloadSwiss RS 70 👍
<<locked>>
97%
64368
81%
**59
100%
ReloadSwiss RS 76
<<locked>>
97%
38624
48%
**49
95%
Rottweil R 901
<<locked>>
87%
70634
88%
**15
100%
Rottweil R 902
<<locked>>
91%
71214
89%
**58
100%
Rottweil R 903
<<locked>>
95%
71083
89%
**00
100%
Rottweil R 904
<<locked>>
97%
56826
71%
**40
97%
Rottweil R 905
<<locked>>
97%
53243
67%
**33
98%
Rottweil R 907
<<locked>>
97%
70372
88%
**00
100%
SNPE Vectan SP 11
<<locked>>
94%
71402
89%
**36
100%
SNPE Vectan SP 7
<<locked>>
87%
71315
89%
**94
100%
SNPE Vectan SP 9
<<locked>>
89%
71852
90%
**10
100%
SNPE Vectan Tubal 3000
<<locked>>
89%
71721
90%
**79
100%
SNPE Vectan Tubal 5000
<<locked>>
94%
71069
89%
**49
100%
SNPE Vectan Tubal 7000
<<locked>>
97%
67675
85%
**18
100%
SNPE Vectan Tubal 8000
<<locked>>
97%
52794
66%
**36
98%
Shooters World Long Rifle
<<locked>>
97%
67965
85%
**64
100%
Shooters World Match Rifle
<<locked>>
88%
71562
90%
**68
100%
Shooters World Precision
<<locked>>
92%
71765
90%
**77
100%
Shooters World SW4350
<<locked>>
97%
65209
82%
**58
100%
Somchem S321
<<locked>>
85%
71881
90%
**81
100%
Somchem S335
<<locked>>
90%
71663
90%
**76
100%
Somchem S341
<<locked>>
88%
71475
89%
**84
100%
Somchem S355
<<locked>>
95%
71185
89%
**97
100%
Somchem S361
<<locked>>
97%
58566
73%
**27
96%
Somchem S365
<<locked>>
97%
59321
74%
**25
100%
Somchem S385
<<locked>>
97%
54824
69%
**27
99%
Vihtavuori N130
<<locked>>
86%
71373
89%
**30
100%
Vihtavuori N133
<<locked>>
89%
70866
89%
**43
100%
Vihtavuori N135
<<locked>>
92%
71069
89%
**99
100%
Vihtavuori N140
<<locked>>
91%
71417
89%
**12
100%
Vihtavuori N150
<<locked>>
96%
71460
89%
**48
100%
Vihtavuori N160
<<locked>>
97%
66485
83%
**64
100%
Vihtavuori N165
<<locked>>
97%
46615
58%
**72
97%
Vihtavuori N530
<<locked>>
87%
71460
89%
**58
100%
Vihtavuori N540
<<locked>>
91%
71127
89%
**35
100%
Vihtavuori N550
<<locked>>
97%
65398
82%
**74
100%
Vihtavuori N555
<<locked>>
97%
51140
64%
**17
100%
Vihtavuori N560
<<locked>>
97%
51576
65%
**66
95%
[Vihtavuori N565]*
<<locked>>
97%
40567
51%
**36
92%
Winchester 6.5 StaBALL
<<locked>>
97%
67138
84%
**31
100%
Winchester 748
<<locked>>
86%
71127
89%
**94
100%
Winchester 760 👍
<<locked>>
97%
68530
86%
**59
100%
Winchester StaBALL HD
<<locked>>
97%
39639
50%
**74
100%
Winchester StaBALL Match
<<locked>>
89%
70967
89%
**97
100%
Winchester Supreme 780
<<locked>>
97%
50633
63%
**48
97%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59495
74%
**54
100%
ADI AR 2206H
<<locked>>
81%
56217
70%
**13
100%
ADI AR 2208
<<locked>>
81%
47703
60%
**59
100%
[ADI AR 2209]*
<<locked>>
81%
33040
41%
**03
90%
[ADI AR 2213]*
<<locked>>
88%
37275
47%
**31
90%
ADI Benchmark 8208
<<locked>>
81%
58494
73%
**10
100%
Accurate 2015
<<locked>>
81%
60278
75%
**35
100%
Accurate 2495
<<locked>>
81%
53708
67%
**85
100%
Accurate 2520
<<locked>>
81%
62076
78%
**46
100%
Accurate 2700
<<locked>>
81%
51068
64%
**79
98%
[Accurate 3100]*
<<locked>>
81%
28268
35%
**69
92%
Accurate 4064
<<locked>>
81%
50879
64%
**92
100%
Accurate 4350
<<locked>>
81%
38609
48%
**48
98%
[Accurate MAGPRO]*
<<locked>>
90%
39711
50%
**30
90%
Alliant AR-Comp
<<locked>>
81%
60568
76%
**71
100%
Alliant Power Pro 2000-MR
<<locked>>
81%
53084
66%
**86
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
48501
61%
**85
100%
Alliant Reloder-10x
<<locked>>
81%
66921
84%
**30
100%
Alliant Reloder-15
<<locked>>
81%
51517
64%
**51
100%
Alliant Reloder-16
<<locked>>
81%
37594
47%
**54
98%
Alliant Reloder-17
<<locked>>
81%
42641
53%
**85
100%
[Alliant Reloder-19]*
<<locked>>
81%
32735
41%
**97
90%
[Alliant Reloder-22]*
<<locked>>
85%
32663
41%
**36
90%
Alliant Reloder-23
<<locked>>
81%
27572
35%
**98
96%
[Alliant Reloder-25]*
<<locked>>
84%
27108
34%
**82
90%
[Alliant Reloder-26]*
<<locked>>
81%
29356
37%
**03
94%
Baschieri & Pellagri 107
<<locked>>
81%
55970
70%
**20
100%
[Bofors RP15]*
<<locked>>
87%
32750
41%
**33
90%
Bofors RP3
<<locked>>
81%
48834
61%
**02
100%
[Bofors RP5]*
<<locked>>
85%
32663
41%
**36
90%
Bofors RP7
<<locked>>
81%
42801
54%
**67
96%
Hodgdon BL-C2
<<locked>>
81%
58740
73%
**36
100%
Hodgdon Benchmark
<<locked>>
81%
59712
75%
**87
100%
Hodgdon CFE223
<<locked>>
81%
65528
82%
**04
100%
[Hodgdon H1000]*
<<locked>>
94%
35926
45%
**82
90%
Hodgdon H380
<<locked>>
81%
48994
61%
**08
99%
Hodgdon H414
<<locked>>
81%
40799
51%
**00
96%
Hodgdon H4350
<<locked>>
81%
43874
55%
**23
96%
[Hodgdon H4831]*
<<locked>>
87%
38464
48%
**18
90%
[Hodgdon H4831 SC]*
<<locked>>
88%
38464
48%
**18
90%
Hodgdon H4895
<<locked>>
81%
56826
71%
**17
100%
Hodgdon Hybrid 100V
<<locked>>
81%
35056
44%
**46
99%
Hodgdon LEVERevolution
<<locked>>
81%
53780
67%
**07
100%
[Hodgdon Retumbo]*
<<locked>>
92%
33707
42%
**08
90%
Hodgdon Superformance
<<locked>>
81%
39566
50%
**97
95%
Hodgdon TrailBoss
<<locked>>
81%
27818
35%
**37
100%
Hodgdon VARGET
<<locked>>
81%
54476
68%
**71
100%
IMR 3031
<<locked>>
81%
57841
72%
**00
100%
IMR 4064
<<locked>>
81%
50227
63%
**95
100%
IMR 4166 Enduron
<<locked>>
81%
52605
66%
**28
99%
IMR 4198
<<locked>>
81%
65630
82%
**74
100%
IMR 4350
<<locked>>
81%
38203
48%
**85
95%
IMR 4451 Enduron
<<locked>>
81%
44295
55%
**97
97%
IMR 4831
<<locked>>
81%
37217
47%
**98
98%
IMR 4895
<<locked>>
81%
52924
66%
**87
100%
[IMR 4955 Enduron]*
<<locked>>
84%
37072
46%
**52
90%
[IMR 7828 SSC]*
<<locked>>
90%
37159
47%
**41
90%
IMR 8208 XBR
<<locked>>
81%
58494
73%
**10
100%
Lovex D073.6
<<locked>>
81%
56666
71%
**87
100%
Lovex S060
<<locked>>
81%
55027
69%
**31
100%
Lovex S062
<<locked>>
81%
50517
63%
**89
100%
Lovex S065
<<locked>>
81%
41742
52%
**41
98%
Lovex S070
<<locked>>
81%
39842
50%
**25
96%
[Lovex S071]*
<<locked>>
83%
26107
33%
**00
90%
Norma 201
<<locked>>
81%
55100
69%
**54
100%
Norma 202
<<locked>>
81%
55825
70%
**48
100%
Norma 203B
<<locked>>
81%
51024
64%
**38
100%
[Norma 204]*
<<locked>>
81%
37811
47%
**12
93%
[Norma MRP]*
<<locked>>
81%
29559
37%
**77
90%
Norma URP
<<locked>>
81%
38276
48%
**38
98%
Ramshot Big Game
<<locked>>
81%
51401
64%
**67
100%
[Ramshot Grand]*
<<locked>>
90%
36434
46%
**35
90%
Ramshot Hunter
<<locked>>
81%
37304
47%
**21
96%
[Ramshot Magnum]*
<<locked>>
89%
32024
40%
**00
90%
Ramshot TAC
<<locked>>
81%
58421
73%
**40
100%
Ramshot Wild Boar
<<locked>>
81%
58943
74%
**46
100%
Ramshot X-Terminator
<<locked>>
81%
62743
79%
**59
100%
ReloadSwiss RS 14
<<locked>>
81%
28297
35%
**77
100%
ReloadSwiss RS 40
<<locked>>
81%
65021
81%
**76
100%
ReloadSwiss RS 50
<<locked>>
81%
48979
61%
**92
99%
ReloadSwiss RS 52
<<locked>>
81%
56028
70%
**79
100%
ReloadSwiss RS 60
<<locked>>
81%
45440
57%
**44
100%
ReloadSwiss RS 62
<<locked>>
81%
38319
48%
**64
98%
ReloadSwiss RS 70
<<locked>>
81%
37362
47%
**64
97%
[ReloadSwiss RS 76]*
<<locked>>
91%
31995
40%
**49
90%
Rottweil R 901
<<locked>>
81%
59103
74%
**77
100%
Rottweil R 902
<<locked>>
81%
52359
66%
**08
100%
Rottweil R 903
<<locked>>
81%
45759
57%
**36
100%
[Rottweil R 904]*
<<locked>>
82%
35230
44%
**16
90%
[Rottweil R 905]*
<<locked>>
81%
32111
40%
**90
90%
Rottweil R 907
<<locked>>
81%
42801
54%
**67
96%
SNPE Vectan SP 11
<<locked>>
81%
46978
59%
**99
100%
SNPE Vectan SP 7
<<locked>>
81%
57479
72%
**13
100%
SNPE Vectan SP 9
<<locked>>
81%
54723
68%
**84
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
55840
70%
**85
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
47210
59%
**51
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
41060
51%
**95
96%
[SNPE Vectan Tubal 8000]*
<<locked>>
81%
31821
40%
**80
90%
Shooters World Long Rifle
<<locked>>
81%
41742
52%
**41
98%
Shooters World Match Rifle
<<locked>>
81%
56666
71%
**87
100%
Shooters World Precision
<<locked>>
81%
50517
63%
**89
100%
Shooters World SW4350
<<locked>>
81%
39842
50%
**25
96%
Somchem S321
<<locked>>
81%
63846
80%
**89
100%
Somchem S335
<<locked>>
81%
55622
70%
**82
100%
Somchem S341
<<locked>>
81%
57000
71%
**00
100%
Somchem S355
<<locked>>
81%
46166
58%
**40
100%
[Somchem S361]*
<<locked>>
83%
37666
47%
**49
90%
Somchem S365
<<locked>>
81%
34693
43%
**89
100%
[Somchem S385]*
<<locked>>
81%
32329
40%
**70
92%
Vihtavuori N130
<<locked>>
81%
62439
78%
**28
100%
Vihtavuori N133
<<locked>>
81%
56420
71%
**69
100%
Vihtavuori N135
<<locked>>
81%
50270
63%
**36
100%
Vihtavuori N140
<<locked>>
81%
52837
66%
**82
100%
Vihtavuori N150
<<locked>>
81%
43961
55%
**64
100%
Vihtavuori N160
<<locked>>
81%
39885
50%
**41
98%
[Vihtavuori N165]*
<<locked>>
84%
30661
38%
**15
90%
Vihtavuori N530
<<locked>>
81%
59059
74%
**10
100%
Vihtavuori N540
<<locked>>
81%
50995
64%
**76
100%
Vihtavuori N550
<<locked>>
81%
39262
49%
**41
98%
Vihtavuori N555
<<locked>>
81%
30182
38%
**80
96%
[Vihtavuori N560]*
<<locked>>
87%
37608
47%
**67
90%
[Vihtavuori N565]*
<<locked>>
93%
36260
45%
**38
90%
Winchester 6.5 StaBALL
<<locked>>
81%
38986
49%
**05
100%
Winchester 748
<<locked>>
81%
60104
75%
**63
100%
Winchester 760
<<locked>>
81%
40799
51%
**00
96%
[Winchester StaBALL HD]*
<<locked>>
81%
24395
31%
**56
93%
Winchester StaBALL Match
<<locked>>
81%
54868
69%
**94
100%
[Winchester Supreme 780]*
<<locked>>
84%
32605
41%
**67
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

bottom of page