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Load data for 7 mm Backcountry + .284 | 175gr | Sierra MatchKing

Recommended Powder(s): Alliant Reloder-26, Bofors RP7, Hodgdon H4350, Hodgdon Superformance, Norma 204

7 mm Backcountry + .284 | 175gr | Sierra MatchKing

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.284 | 175gr | Sierra MatchKing
Manufacturer SKU:
1975
Bullet Weight:
175gr | 11.3g
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_B5852_C991
Last updated:
2026-07-13
Recommended Twist Rate:
1:10 - 1:8

Load data for 256 loads in caliber 7 mm Backcountry with .284 | 175gr | Sierra MatchKing bullet and 128 powders such as Alliant Reloder-26, Bofors RP7, Hodgdon H4350, Hodgdon Superformance, Norma 204. 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.

    .

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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 APS 450
<<locked>>
92%
71533
90%
**82
101%
ADI AR 2206H
<<locked>>
87%
71663
90%
**22
100%
ADI AR 2208
<<locked>>
92%
70706
88%
**08
100%
ADI AR 2209
<<locked>>
97%
59350
74%
**79
99%
ADI AR 2213
<<locked>>
97%
53650
67%
**33
98%
[ADI AR 2217]*
<<locked>>
97%
39291
49%
**57
94%
ADI AR 2225
<<locked>>
97%
34490
43%
**05
96%
ADI Benchmark 8208
<<locked>>
86%
71895
90%
**85
100%
Accurate 2015
<<locked>>
84%
71388
89%
**80
100%
Accurate 2495
<<locked>>
88%
71620
90%
**10
100%
Accurate 2700
<<locked>>
89%
71257
89%
**99
100%
Accurate 3100
<<locked>>
97%
52808
66%
**38
100%
Accurate 4064
<<locked>>
89%
70953
89%
**59
100%
Accurate 4350
<<locked>>
96%
70764
89%
**64
100%
Accurate MAGPRO
<<locked>>
97%
55158
69%
**82
97%
Alliant AR-Comp
<<locked>>
84%
71040
89%
**97
100%
Alliant Power Pro 2000-MR
<<locked>>
87%
70735
89%
**30
100%
Alliant Reloder- TS 15.5
<<locked>>
91%
70996
89%
**08
100%
Alliant Reloder-15
<<locked>>
89%
71866
90%
**41
100%
Alliant Reloder-16
<<locked>>
96%
67269
84%
**67
100%
Alliant Reloder-17
<<locked>>
93%
71910
90%
**17
100%
Alliant Reloder-19
<<locked>>
97%
58784
74%
**69
99%
Alliant Reloder-22
<<locked>>
97%
53200
67%
**30
99%
Alliant Reloder-23
<<locked>>
97%
50531
63%
**64
100%
Alliant Reloder-25
<<locked>>
97%
43337
54%
**95
100%
Alliant Reloder-26 👍
<<locked>>
97%
58001
73%
**44
100%
Baschieri & Pellagri 107
<<locked>>
86%
70938
89%
**41
100%
Baschieri & Pellagri 109
<<locked>>
97%
52895
66%
**41
95%
Bofors RP15
<<locked>>
97%
48892
61%
**61
98%
Bofors RP3
<<locked>>
90%
70895
89%
**15
100%
Bofors RP30
<<locked>>
97%
39494
49%
**20
95%
Bofors RP5
<<locked>>
97%
53200
67%
**30
99%
Bofors RP7 👍
<<locked>>
95%
71388
89%
**41
100%
Hodgdon BL-C2
<<locked>>
85%
71388
89%
**08
100%
Hodgdon Benchmark
<<locked>>
85%
71504
89%
**46
100%
Hodgdon H1000
<<locked>>
97%
43076
54%
**43
96%
Hodgdon H380
<<locked>>
90%
71228
89%
**44
100%
Hodgdon H414
<<locked>>
96%
71591
90%
**07
100%
Hodgdon H4350 👍
<<locked>>
94%
71837
90%
**84
100%
Hodgdon H4831
<<locked>>
97%
57914
72%
**33
98%
Hodgdon H4831 SC
<<locked>>
97%
56318
70%
**13
98%
Hodgdon H4895
<<locked>>
86%
71460
89%
**22
100%
Hodgdon Hybrid 100V
<<locked>>
97%
63672
80%
**46
100%
Hodgdon LEVERevolution
<<locked>>
87%
71504
89%
**48
100%
Hodgdon Retumbo
<<locked>>
97%
42453
53%
**31
98%
Hodgdon Superformance 👍
<<locked>>
95%
71156
89%
**40
100%
Hodgdon TrailBoss
<<locked>>
96%
35027
44%
**08
100%
Hodgdon VARGET
<<locked>>
88%
71634
90%
**12
100%
IMR 3031
<<locked>>
85%
71388
89%
**66
100%
IMR 4064
<<locked>>
90%
71228
89%
**02
100%
IMR 4166 Enduron
<<locked>>
89%
71257
89%
**15
100%
IMR 4350
<<locked>>
97%
67153
84%
**05
100%
IMR 4451 Enduron
<<locked>>
95%
71678
90%
**44
100%
IMR 4831
<<locked>>
97%
67153
84%
**12
100%
IMR 4895
<<locked>>
88%
71373
89%
**44
100%
IMR 4955 Enduron
<<locked>>
97%
58392
73%
**13
98%
IMR 7828 SSC
<<locked>>
97%
51459
64%
**03
98%
IMR 8208 XBR
<<locked>>
86%
71895
90%
**85
100%
Lovex D073.6
<<locked>>
86%
70996
89%
**72
100%
Lovex S060
<<locked>>
88%
71040
89%
**62
100%
Lovex S062
<<locked>>
90%
71431
89%
**89
100%
Lovex S065
<<locked>>
96%
71388
89%
**28
100%
Lovex S070
<<locked>>
97%
70300
88%
**41
100%
Lovex S071
<<locked>>
97%
44759
56%
**13
99%
Norma 201
<<locked>>
87%
71344
89%
**76
100%
Norma 202
<<locked>>
87%
71272
89%
**53
100%
Norma 203B
<<locked>>
89%
70982
89%
**28
100%
Norma 204 👍
<<locked>>
97%
69198
87%
**77
100%
[Norma 217]*
<<locked>>
97%
30618
38%
**39
93%
Norma MRP
<<locked>>
97%
55854
70%
**95
100%
Norma URP
<<locked>>
97%
69589
87%
**58
100%
Ramshot Big Game
<<locked>>
89%
71707
90%
**48
100%
Ramshot Grand
<<locked>>
97%
51082
64%
**10
98%
Ramshot Hunter
<<locked>>
97%
67820
85%
**67
100%
Ramshot Magnum
<<locked>>
97%
45774
57%
**02
98%
Ramshot TAC
<<locked>>
85%
71025
89%
**22
100%
Ramshot Wild Boar
<<locked>>
85%
71228
89%
**25
100%
ReloadSwiss RS 14
<<locked>>
96%
35592
45%
**40
100%
ReloadSwiss RS 50
<<locked>>
91%
71750
90%
**44
100%
ReloadSwiss RS 52
<<locked>>
86%
71692
90%
**94
100%
ReloadSwiss RS 60
<<locked>>
91%
71504
89%
**97
100%
ReloadSwiss RS 62
<<locked>>
96%
71257
89%
**94
100%
ReloadSwiss RS 70
<<locked>>
97%
71489
89%
**46
100%
ReloadSwiss RS 76
<<locked>>
97%
42656
53%
**35
99%
[ReloadSwiss RS 80]*
<<locked>>
97%
38058
48%
**07
92%
Rottweil R 901
<<locked>>
85%
71402
89%
**40
100%
Rottweil R 902
<<locked>>
89%
71533
90%
**72
100%
Rottweil R 903
<<locked>>
93%
71910
90%
**18
100%
Rottweil R 904
<<locked>>
97%
61612
77%
**59
99%
Rottweil R 905
<<locked>>
97%
58494
73%
**59
100%
Rottweil R 907
<<locked>>
95%
71388
89%
**41
100%
SNPE Vectan SP 11
<<locked>>
91%
71402
89%
**58
100%
SNPE Vectan SP 7
<<locked>>
85%
71663
90%
**18
100%
SNPE Vectan SP 9
<<locked>>
87%
71765
90%
**18
100%
SNPE Vectan Tubal 3000
<<locked>>
87%
71025
89%
**87
100%
SNPE Vectan Tubal 5000
<<locked>>
92%
71446
89%
**77
100%
SNPE Vectan Tubal 7000
<<locked>>
96%
71576
90%
**89
100%
SNPE Vectan Tubal 8000
<<locked>>
97%
58001
73%
**59
99%
Shooters World Long Rifle
<<locked>>
96%
71388
89%
**28
100%
Shooters World Match Rifle
<<locked>>
86%
70996
89%
**72
100%
Shooters World Precision
<<locked>>
90%
71431
89%
**89
100%
Shooters World SW4350
<<locked>>
97%
70300
88%
**41
100%
Somchem S335
<<locked>>
87%
71112
89%
**90
100%
Somchem S341
<<locked>>
85%
71069
89%
**95
100%
Somchem S355
<<locked>>
93%
70822
89%
**08
100%
Somchem S361
<<locked>>
97%
63802
80%
**56
99%
Somchem S365
<<locked>>
97%
64919
81%
**02
100%
Somchem S385
<<locked>>
97%
59146
74%
**33
100%
Vihtavuori N130
<<locked>>
84%
71475
89%
**44
100%
Vihtavuori N133
<<locked>>
87%
71489
89%
**61
100%
Vihtavuori N135
<<locked>>
90%
71562
90%
**13
100%
Vihtavuori N140
<<locked>>
88%
71228
89%
**26
100%
Vihtavuori N150
<<locked>>
94%
71069
89%
**59
100%
Vihtavuori N160
<<locked>>
97%
71794
90%
**44
100%
Vihtavuori N165
<<locked>>
97%
50908
64%
**05
99%
Vihtavuori N530
<<locked>>
85%
71547
90%
**76
100%
Vihtavuori N540
<<locked>>
90%
71779
90%
**56
100%
Vihtavuori N550
<<locked>>
97%
70851
89%
**54
100%
Vihtavuori N555
<<locked>>
97%
56449
71%
**30
100%
Vihtavuori N560
<<locked>>
97%
55912
70%
**89
98%
Vihtavuori N565
<<locked>>
97%
45411
57%
**08
96%
[Vihtavuori N568]*
<<locked>>
97%
39450
49%
**23
92%
Winchester 6.5 StaBALL
<<locked>>
96%
70779
89%
**95
100%
Winchester 748
<<locked>>
84%
71199
89%
**99
100%
Winchester 760
<<locked>>
95%
70967
89%
**04
100%
Winchester StaBALL HD
<<locked>>
97%
45556
57%
**13
100%
Winchester StaBALL Match
<<locked>>
87%
71576
90%
**18
100%
Winchester Supreme 780
<<locked>>
97%
55317
69%
**77
99%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59988
75%
**41
101%
ADI AR 2206H
<<locked>>
81%
60205
75%
**87
100%
ADI AR 2208
<<locked>>
81%
51227
64%
**62
100%
[ADI AR 2209]*
<<locked>>
81%
35665
45%
**56
94%
[ADI AR 2213]*
<<locked>>
81%
32271
40%
**90
90%
[ADI AR 2217]*
<<locked>>
91%
32097
40%
**77
90%
[ADI AR 2225]*
<<locked>>
88%
26731
33%
**72
90%
ADI Benchmark 8208
<<locked>>
81%
62337
78%
**77
100%
Accurate 2015
<<locked>>
81%
64614
81%
**12
100%
Accurate 2495
<<locked>>
81%
57653
72%
**59
100%
Accurate 2700
<<locked>>
81%
54911
69%
**98
99%
Accurate 3100
<<locked>>
81%
31328
39%
**41
96%
Accurate 4064
<<locked>>
81%
54578
68%
**72
100%
Accurate 4350
<<locked>>
81%
42467
53%
**87
100%
[Accurate MAGPRO]*
<<locked>>
83%
34171
43%
**75
90%
Alliant AR-Comp
<<locked>>
81%
65282
82%
**38
100%
Alliant Power Pro 2000-MR
<<locked>>
81%
57667
72%
**69
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
52040
65%
**85
100%
Alliant Reloder-15
<<locked>>
81%
55332
69%
**44
100%
Alliant Reloder-16
<<locked>>
81%
40915
51%
**93
100%
Alliant Reloder-17
<<locked>>
81%
46659
58%
**98
100%
[Alliant Reloder-19]*
<<locked>>
81%
35621
45%
**56
94%
[Alliant Reloder-22]*
<<locked>>
81%
31270
39%
**90
92%
Alliant Reloder-23
<<locked>>
81%
30139
38%
**67
99%
[Alliant Reloder-25]*
<<locked>>
81%
26469
33%
**75
93%
Alliant Reloder-26
<<locked>>
81%
32387
41%
**85
98%
Baschieri & Pellagri 107
<<locked>>
81%
60466
76%
**13
100%
[Baschieri & Pellagri 109]*
<<locked>>
88%
40277
50%
**02
90%
[Bofors RP15]*
<<locked>>
81%
29443
37%
**34
91%
Bofors RP3
<<locked>>
81%
52417
66%
**89
100%
[Bofors RP30]*
<<locked>>
88%
29660
37%
**74
90%
[Bofors RP5]*
<<locked>>
81%
31270
39%
**90
92%
Bofors RP7
<<locked>>
81%
45948
58%
**84
98%
Hodgdon BL-C2
<<locked>>
81%
62932
79%
**13
100%
Hodgdon Benchmark
<<locked>>
81%
63092
79%
**51
100%
[Hodgdon H1000]*
<<locked>>
87%
30792
39%
**51
90%
Hodgdon H380
<<locked>>
81%
53040
66%
**15
100%
Hodgdon H414
<<locked>>
81%
44266
55%
**30
99%
Hodgdon H4350
<<locked>>
81%
46891
59%
**36
98%
[Hodgdon H4831]*
<<locked>>
81%
34055
43%
**03
91%
[Hodgdon H4831 SC]*
<<locked>>
81%
33170
42%
**77
91%
Hodgdon H4895
<<locked>>
81%
60930
76%
**97
100%
Hodgdon Hybrid 100V
<<locked>>
81%
38537
48%
**85
100%
Hodgdon LEVERevolution
<<locked>>
81%
58001
73%
**94
100%
[Hodgdon Retumbo]*
<<locked>>
85%
28993
36%
**74
90%
Hodgdon Superformance
<<locked>>
81%
43279
54%
**43
98%
Hodgdon TrailBoss
<<locked>>
82%
28645
36%
**83
100%
Hodgdon VARGET
<<locked>>
81%
58131
73%
**51
100%
IMR 3031
<<locked>>
81%
62279
78%
**71
100%
IMR 4064
<<locked>>
81%
53969
68%
**92
100%
IMR 4166 Enduron
<<locked>>
81%
56130
70%
**21
100%
IMR 4350
<<locked>>
81%
41379
52%
**21
97%
IMR 4451 Enduron
<<locked>>
81%
47253
59%
**16
99%
IMR 4831
<<locked>>
81%
40538
51%
**31
100%
IMR 4895
<<locked>>
81%
56869
71%
**74
100%
[IMR 4955 Enduron]*
<<locked>>
81%
35853
45%
**06
92%
[IMR 7828 SSC]*
<<locked>>
82%
31546
39%
**83
90%
IMR 8208 XBR
<<locked>>
81%
62337
78%
**77
100%
Lovex D073.6
<<locked>>
81%
61322
77%
**67
100%
Lovex S060
<<locked>>
81%
58711
73%
**15
100%
Lovex S062
<<locked>>
81%
54418
68%
**85
100%
Lovex S065
<<locked>>
81%
44744
56%
**64
99%
Lovex S070
<<locked>>
81%
43163
54%
**54
98%
[Lovex S071]*
<<locked>>
81%
26890
34%
**23
94%
Norma 201
<<locked>>
81%
58682
73%
**35
100%
Norma 202
<<locked>>
81%
59625
75%
**28
100%
Norma 203B
<<locked>>
81%
54824
69%
**35
100%
Norma 204
<<locked>>
81%
40886
51%
**51
96%
[Norma 217]*
<<locked>>
93%
26876
34%
**18
90%
Norma MRP
<<locked>>
81%
32692
41%
**56
95%
Norma URP
<<locked>>
81%
41989
53%
**74
100%
Ramshot Big Game
<<locked>>
81%
55448
69%
**61
100%
[Ramshot Grand]*
<<locked>>
83%
31314
39%
**90
90%
Ramshot Hunter
<<locked>>
81%
40640
51%
**67
99%
[Ramshot Magnum]*
<<locked>>
82%
27180
34%
**65
90%
Ramshot TAC
<<locked>>
81%
62743
79%
**30
100%
Ramshot Wild Boar
<<locked>>
81%
62743
79%
**23
100%
ReloadSwiss RS 14
<<locked>>
81%
28558
36%
**06
100%
ReloadSwiss RS 50
<<locked>>
81%
52794
66%
**05
100%
ReloadSwiss RS 52
<<locked>>
81%
60408
76%
**66
100%
ReloadSwiss RS 60
<<locked>>
81%
49661
62%
**41
100%
ReloadSwiss RS 62
<<locked>>
81%
42105
53%
**97
100%
ReloadSwiss RS 70
<<locked>>
81%
40466
51%
**13
99%
[ReloadSwiss RS 76]*
<<locked>>
84%
27282
34%
**21
90%
[ReloadSwiss RS 80]*
<<locked>>
94%
34389
43%
**15
90%
Rottweil R 901
<<locked>>
81%
62961
79%
**44
100%
Rottweil R 902
<<locked>>
81%
56101
70%
**95
100%
Rottweil R 903
<<locked>>
81%
49748
62%
**52
100%
[Rottweil R 904]*
<<locked>>
81%
37260
47%
**46
94%
[Rottweil R 905]*
<<locked>>
81%
34824
44%
**39
94%
Rottweil R 907
<<locked>>
81%
45948
58%
**84
98%
SNPE Vectan SP 11
<<locked>>
81%
50894
64%
**02
100%
SNPE Vectan SP 7
<<locked>>
81%
62018
78%
**07
100%
SNPE Vectan SP 9
<<locked>>
81%
58378
73%
**67
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
59335
74%
**56
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
50328
63%
**41
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
44135
55%
**21
99%
[SNPE Vectan Tubal 8000]*
<<locked>>
81%
34505
43%
**39
94%
Shooters World Long Rifle
<<locked>>
81%
44744
56%
**64
99%
Shooters World Match Rifle
<<locked>>
81%
61322
77%
**67
100%
Shooters World Precision
<<locked>>
81%
54418
68%
**85
100%
Shooters World SW4350
<<locked>>
81%
43163
54%
**54
98%
Somchem S335
<<locked>>
81%
58842
74%
**56
100%
Somchem S341
<<locked>>
81%
61554
77%
**87
100%
Somchem S355
<<locked>>
81%
49559
62%
**43
100%
[Somchem S361]*
<<locked>>
81%
37492
47%
**33
93%
Somchem S365
<<locked>>
81%
38247
48%
**34
100%
Somchem S385
<<locked>>
81%
35172
44%
**26
96%
Vihtavuori N130
<<locked>>
81%
65978
83%
**92
100%
Vihtavuori N133
<<locked>>
81%
59857
75%
**43
100%
Vihtavuori N135
<<locked>>
81%
53969
68%
**20
100%
Vihtavuori N140
<<locked>>
81%
56739
71%
**69
100%
Vihtavuori N150
<<locked>>
81%
47688
60%
**77
100%
Vihtavuori N160
<<locked>>
81%
43453
54%
**70
100%
[Vihtavuori N165]*
<<locked>>
81%
30589
38%
**11
93%
Vihtavuori N530
<<locked>>
81%
62830
79%
**77
100%
Vihtavuori N540
<<locked>>
81%
54723
68%
**66
100%
Vihtavuori N550
<<locked>>
81%
42873
54%
**77
100%
Vihtavuori N555
<<locked>>
81%
33750
42%
**43
99%
[Vihtavuori N560]*
<<locked>>
81%
33228
42%
**43
91%
[Vihtavuori N565]*
<<locked>>
86%
31009
39%
**93
90%
[Vihtavuori N568]*
<<locked>>
94%
35607
45%
**28
90%
Winchester 6.5 StaBALL
<<locked>>
81%
42409
53%
**41
100%
Winchester 748
<<locked>>
81%
64571
81%
**30
100%
Winchester 760
<<locked>>
81%
44570
56%
**33
99%
Winchester StaBALL HD
<<locked>>
81%
24250
30%
**60
99%
Winchester StaBALL Match
<<locked>>
81%
59016
74%
**74
100%
[Winchester Supreme 780]*
<<locked>>
81%
32053
40%
**47
93%

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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