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Load data for 7 mm Backcountry + .284 | 140gr | Sierra GameKing

Recommended Powder(s): Accurate 2700, IMR 4166 Enduron, IMR 4451 Enduron, ReloadSwiss RS 50, ReloadSwiss RS 70

7 mm Backcountry + .284 | 140gr | Sierra GameKing

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.284 | 140gr | Sierra GameKing
Manufacturer SKU:
1912
Bullet Weight:
140gr | 9.1g
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_B5839_C991
Last updated:
2026-07-16
Recommended Twist Rate:
1:10 - 1:8

Load data for 266 loads in caliber 7 mm Backcountry with .284 | 140gr | Sierra GameKing bullet and 133 powders such as Accurate 2700, IMR 4166 Enduron, IMR 4451 Enduron, ReloadSwiss RS 50, ReloadSwiss RS 70. 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%
71533
90%
**38
101%
ADI AR 2206H
<<locked>>
90%
71692
90%
**59
100%
ADI AR 2208
<<locked>>
96%
71721
90%
**36
100%
ADI AR 2209
<<locked>>
97%
51619
65%
**43
96%
[ADI AR 2213]*
<<locked>>
97%
46630
58%
**64
93%
ADI Benchmark 8208
<<locked>>
89%
71040
89%
**10
100%
Accurate 2015
<<locked>>
88%
71823
90%
**09
100%
Accurate 2460
<<locked>>
84%
70721
88%
**54
100%
Accurate 2495
<<locked>>
92%
71069
89%
**35
100%
Accurate 2520
<<locked>>
87%
70895
89%
**87
100%
Accurate 2700 👍
<<locked>>
93%
71823
90%
**10
100%
Accurate 3100
<<locked>>
97%
44440
56%
**79
97%
Accurate 4064
<<locked>>
94%
70909
89%
**87
100%
Accurate 4350
<<locked>>
97%
61366
77%
**74
100%
[Accurate MAGPRO]*
<<locked>>
97%
46253
58%
**97
92%
Alliant AR-Comp
<<locked>>
88%
71199
89%
**31
100%
Alliant Power Pro 1200-R
<<locked>>
83%
71214
89%
**96
100%
Alliant Power Pro 2000-MR
<<locked>>
91%
71460
89%
**74
100%
Alliant Reloder- TS 15.5
<<locked>>
95%
70953
89%
**46
100%
Alliant Reloder-10x
<<locked>>
85%
71257
89%
**18
100%
Alliant Reloder-15
<<locked>>
93%
70909
89%
**63
100%
Alliant Reloder-16
<<locked>>
97%
57725
72%
**77
100%
Alliant Reloder-17
<<locked>>
97%
69430
87%
**25
100%
Alliant Reloder-19
<<locked>>
97%
50531
63%
**20
96%
Alliant Reloder-22
<<locked>>
97%
45063
56%
**71
95%
Alliant Reloder-23
<<locked>>
97%
42540
53%
**18
100%
Alliant Reloder-25
<<locked>>
97%
37217
47%
**10
96%
Alliant Reloder-26
<<locked>>
97%
47703
60%
**92
99%
Baschieri & Pellagri 106
<<locked>>
84%
71605
90%
**79
100%
Baschieri & Pellagri 107
<<locked>>
90%
71504
89%
**66
100%
[Bofors RP15]*
<<locked>>
97%
41365
52%
**89
94%
Bofors RP3
<<locked>>
94%
71359
89%
**43
100%
Bofors RP5
<<locked>>
97%
45063
56%
**71
95%
Bofors RP7
<<locked>>
97%
66456
83%
**81
99%
Hodgdon BL-C2
<<locked>>
88%
71112
89%
**40
100%
Hodgdon Benchmark
<<locked>>
89%
71141
89%
**64
100%
Hodgdon CFE223
<<locked>>
85%
71025
89%
**15
100%
Hodgdon H322
<<locked>>
85%
71156
89%
**74
100%
Hodgdon H335
<<locked>>
84%
71214
89%
**91
100%
Hodgdon H380
<<locked>>
94%
71301
89%
**66
100%
Hodgdon H414
<<locked>>
97%
64310
80%
**43
100%
Hodgdon H4350
<<locked>>
97%
68675
86%
**56
99%
[Hodgdon H4831]*
<<locked>>
97%
49603
62%
**71
93%
[Hodgdon H4831 SC]*
<<locked>>
97%
48733
61%
**58
93%
Hodgdon H4895
<<locked>>
90%
71214
89%
**50
100%
Hodgdon Hybrid 100V
<<locked>>
97%
54723
68%
**49
100%
Hodgdon LEVERevolution
<<locked>>
92%
71736
90%
**82
100%
Hodgdon Superformance
<<locked>>
97%
66021
83%
**89
100%
Hodgdon TrailBoss
<<locked>>
96%
34403
43%
**98
100%
Hodgdon VARGET
<<locked>>
92%
71765
90%
**36
100%
IMR 3031
<<locked>>
90%
71779
90%
**10
100%
IMR 4064
<<locked>>
94%
71257
89%
**20
100%
IMR 4166 Enduron 👍
<<locked>>
92%
71460
89%
**30
100%
IMR 4198
<<locked>>
85%
71721
90%
**82
100%
IMR 4350
<<locked>>
97%
59437
74%
**05
99%
IMR 4451 Enduron 👍
<<locked>>
97%
67805
85%
**14
100%
IMR 4831
<<locked>>
97%
57783
72%
**15
100%
IMR 4895
<<locked>>
92%
71866
90%
**82
100%
[IMR 4955 Enduron]*
<<locked>>
97%
51445
64%
**74
94%
[IMR 7828 SSC]*
<<locked>>
97%
43656
55%
**22
92%
IMR 8208 XBR
<<locked>>
89%
71040
89%
**10
100%
Lovex D073.5
<<locked>>
84%
71257
89%
**81
100%
Lovex D073.6
<<locked>>
90%
71243
89%
**00
100%
Lovex S060
<<locked>>
91%
71707
90%
**91
100%
Lovex S062
<<locked>>
94%
71301
89%
**07
100%
Lovex S065
<<locked>>
97%
64078
80%
**48
100%
Lovex S070
<<locked>>
97%
61511
77%
**38
99%
Lovex S071
<<locked>>
96%
37028
46%
**25
95%
Norma 201
<<locked>>
91%
71315
89%
**04
100%
Norma 202
<<locked>>
91%
71112
89%
**87
100%
Norma 203B
<<locked>>
93%
71344
89%
**59
100%
Norma 204
<<locked>>
97%
60205
75%
**54
98%
Norma MRP
<<locked>>
97%
47485
59%
**43
97%
Norma URP
<<locked>>
97%
60104
75%
**64
100%
Ramshot Big Game
<<locked>>
93%
71663
90%
**79
100%
[Ramshot Grand]*
<<locked>>
97%
43758
55%
**31
93%
Ramshot Hunter
<<locked>>
97%
58537
73%
**58
100%
[Ramshot Magnum]*
<<locked>>
97%
38696
48%
**00
93%
Ramshot TAC
<<locked>>
89%
71112
89%
**43
100%
Ramshot Wild Boar
<<locked>>
88%
71011
89%
**46
100%
Ramshot X-Terminator
<<locked>>
87%
71591
90%
**07
100%
ReloadSwiss RS 14
<<locked>>
96%
34766
44%
**34
100%
ReloadSwiss RS 40
<<locked>>
86%
71620
90%
**94
100%
ReloadSwiss RS 50 👍
<<locked>>
94%
71765
90%
**56
100%
ReloadSwiss RS 52
<<locked>>
90%
70750
89%
**22
100%
ReloadSwiss RS 60
<<locked>>
96%
71301
89%
**48
100%
ReloadSwiss RS 62
<<locked>>
97%
61873
77%
**04
100%
ReloadSwiss RS 70 👍
<<locked>>
97%
60945
76%
**40
100%
Rottweil R 901
<<locked>>
89%
71040
89%
**68
100%
Rottweil R 902
<<locked>>
93%
71547
90%
**00
100%
Rottweil R 903
<<locked>>
97%
71649
90%
**40
100%
Rottweil R 904
<<locked>>
97%
53621
67%
**20
96%
Rottweil R 905
<<locked>>
97%
49806
62%
**10
96%
Rottweil R 907
<<locked>>
97%
66456
83%
**81
99%
SNPE Vectan BA6 1/2
<<locked>>
85%
71924
90%
**13
100%
SNPE Vectan SP 11
<<locked>>
96%
71417
89%
**79
100%
SNPE Vectan SP 3
<<locked>>
84%
71649
90%
**35
100%
SNPE Vectan SP 7
<<locked>>
89%
71373
89%
**36
100%
SNPE Vectan SP 9
<<locked>>
91%
71779
90%
**50
100%
SNPE Vectan Tubal 3000
<<locked>>
91%
71156
89%
**12
100%
SNPE Vectan Tubal 5000
<<locked>>
96%
71808
90%
**02
100%
SNPE Vectan Tubal 7000
<<locked>>
97%
63875
80%
**02
99%
SNPE Vectan Tubal 8000
<<locked>>
97%
49342
62%
**04
96%
Shooters World Long Rifle
<<locked>>
97%
64078
80%
**48
100%
Shooters World Match Rifle
<<locked>>
90%
71243
89%
**00
100%
Shooters World Precision
<<locked>>
94%
71301
89%
**07
100%
Shooters World SW4350
<<locked>>
97%
61511
77%
**38
99%
Shooters World Tactical Rifle
<<locked>>
83%
70851
89%
**71
100%
Somchem S321
<<locked>>
86%
70880
89%
**10
100%
Somchem S335
<<locked>>
91%
71591
90%
**15
100%
Somchem S341
<<locked>>
89%
71721
90%
**27
100%
Somchem S355
<<locked>>
97%
71228
89%
**43
100%
Somchem S361
<<locked>>
97%
55550
70%
**10
95%
Somchem S365
<<locked>>
97%
55027
69%
**05
100%
Somchem S385
<<locked>>
97%
50966
64%
**94
97%
Vihtavuori N130
<<locked>>
87%
70663
88%
**63
100%
Vihtavuori N133
<<locked>>
91%
71518
89%
**79
100%
Vihtavuori N135
<<locked>>
94%
71301
89%
**38
100%
Vihtavuori N140
<<locked>>
92%
70895
89%
**48
100%
Vihtavuori N150
<<locked>>
97%
69009
86%
**61
100%
Vihtavuori N160
<<locked>>
97%
62207
78%
**51
100%
Vihtavuori N165
<<locked>>
97%
43250
54%
**46
95%
Vihtavuori N530
<<locked>>
89%
71286
89%
**94
100%
Vihtavuori N540
<<locked>>
93%
71083
89%
**68
100%
Vihtavuori N550
<<locked>>
97%
61380
77%
**61
100%
Vihtavuori N555
<<locked>>
97%
47427
59%
**97
100%
[Vihtavuori N560]*
<<locked>>
97%
47877
60%
**23
93%
Winchester 6.5 StaBALL
<<locked>>
97%
63251
79%
**35
100%
Winchester 748
<<locked>>
88%
71475
89%
**46
100%
Winchester 760
<<locked>>
97%
64310
80%
**43
100%
Winchester StaBALL HD
<<locked>>
97%
35128
44%
**31
100%
Winchester StaBALL Match
<<locked>>
91%
71141
89%
**40
100%
Winchester Supreme 780
<<locked>>
97%
47195
59%
**28
95%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59335
74%
**74
100%
ADI AR 2206H
<<locked>>
81%
53156
67%
**04
100%
ADI AR 2208
<<locked>>
81%
45295
57%
**53
99%
[ADI AR 2209]*
<<locked>>
85%
34838
44%
**75
90%
[ADI AR 2213]*
<<locked>>
92%
39436
49%
**07
90%
ADI Benchmark 8208
<<locked>>
81%
55274
69%
**04
100%
Accurate 2015
<<locked>>
81%
57319
72%
**41
100%
Accurate 2460
<<locked>>
81%
63396
79%
**72
100%
Accurate 2495
<<locked>>
81%
50183
63%
**76
100%
Accurate 2520
<<locked>>
81%
58682
73%
**40
100%
Accurate 2700
<<locked>>
81%
48385
61%
**62
97%
[Accurate 3100]*
<<locked>>
82%
26905
34%
**59
90%
Accurate 4064
<<locked>>
81%
47369
59%
**72
100%
Accurate 4350
<<locked>>
81%
35708
45%
**18
97%
[Accurate MAGPRO]*
<<locked>>
94%
41901
52%
**02
90%
Alliant AR-Comp
<<locked>>
81%
57101
71%
**67
100%
Alliant Power Pro 1200-R
<<locked>>
81%
65427
82%
**23
100%
Alliant Power Pro 2000-MR
<<locked>>
81%
49588
62%
**59
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
45411
57%
**76
100%
Alliant Reloder-10x
<<locked>>
81%
63759
80%
**30
100%
Alliant Reloder-15
<<locked>>
81%
48646
61%
**48
100%
Alliant Reloder-16
<<locked>>
81%
35302
44%
**28
97%
Alliant Reloder-17
<<locked>>
81%
39842
50%
**62
99%
[Alliant Reloder-19]*
<<locked>>
84%
34316
43%
**62
90%
[Alliant Reloder-22]*
<<locked>>
89%
34098
43%
**08
90%
[Alliant Reloder-23]*
<<locked>>
81%
25686
32%
**69
94%
[Alliant Reloder-25]*
<<locked>>
88%
28050
35%
**38
90%
[Alliant Reloder-26]*
<<locked>>
81%
27209
34%
**51
91%
Baschieri & Pellagri 106
<<locked>>
81%
65499
82%
**13
100%
Baschieri & Pellagri 107
<<locked>>
81%
53069
66%
**17
100%
[Bofors RP15]*
<<locked>>
91%
34635
43%
**15
90%
Bofors RP3
<<locked>>
81%
45774
57%
**85
100%
[Bofors RP5]*
<<locked>>
89%
34098
43%
**08
90%
[Bofors RP7]*
<<locked>>
81%
40364
51%
**38
94%
Hodgdon BL-C2
<<locked>>
81%
55129
69%
**33
100%
Hodgdon Benchmark
<<locked>>
81%
56594
71%
**81
100%
Hodgdon CFE223
<<locked>>
81%
61496
77%
**91
100%
Hodgdon H322
<<locked>>
81%
63599
80%
**92
100%
Hodgdon H335
<<locked>>
81%
64759
81%
**18
100%
Hodgdon H380
<<locked>>
81%
46021
58%
**89
99%
[Hodgdon H414]*
<<locked>>
81%
38058
48%
**67
94%
[Hodgdon H4350]*
<<locked>>
81%
41162
52%
**94
94%
[Hodgdon H4831]*
<<locked>>
90%
40001
50%
**80
90%
[Hodgdon H4831 SC]*
<<locked>>
91%
40001
50%
**80
90%
Hodgdon H4895
<<locked>>
81%
53708
67%
**07
100%
Hodgdon Hybrid 100V
<<locked>>
81%
32793
41%
**23
98%
Hodgdon LEVERevolution
<<locked>>
81%
50285
63%
**94
100%
[Hodgdon Superformance]*
<<locked>>
81%
36898
46%
**64
93%
Hodgdon TrailBoss
<<locked>>
81%
27601
35%
**50
100%
Hodgdon VARGET
<<locked>>
81%
51358
64%
**58
100%
IMR 3031
<<locked>>
81%
53983
68%
**87
100%
IMR 4064
<<locked>>
81%
47688
60%
**82
100%
IMR 4166 Enduron
<<locked>>
81%
49835
62%
**08
98%
IMR 4198
<<locked>>
81%
63034
79%
**84
100%
[IMR 4350]*
<<locked>>
81%
36172
45%
**69
93%
IMR 4451 Enduron
<<locked>>
81%
41684
52%
**77
96%
IMR 4831
<<locked>>
81%
34447
43%
**69
96%
IMR 4895
<<locked>>
81%
49806
62%
**71
100%
[IMR 4955 Enduron]*
<<locked>>
88%
39320
49%
**35
90%
[IMR 7828 SSC]*
<<locked>>
93%
38957
49%
**13
90%
IMR 8208 XBR
<<locked>>
81%
55274
69%
**04
100%
Lovex D073.5
<<locked>>
81%
63759
80%
**89
100%
Lovex D073.6
<<locked>>
81%
53287
67%
**71
100%
Lovex S060
<<locked>>
81%
52591
66%
**31
100%
Lovex S062
<<locked>>
81%
47906
60%
**89
100%
Lovex S065
<<locked>>
81%
39160
49%
**21
96%
[Lovex S070]*
<<locked>>
81%
37463
47%
**05
94%
[Lovex S071]*
<<locked>>
87%
27064
34%
**65
90%
Norma 201
<<locked>>
81%
51953
65%
**41
100%
Norma 202
<<locked>>
81%
52634
66%
**51
100%
Norma 203B
<<locked>>
81%
47877
60%
**31
100%
[Norma 204]*
<<locked>>
81%
35433
44%
**79
91%
[Norma MRP]*
<<locked>>
84%
30951
39%
**46
90%
Norma URP
<<locked>>
81%
35810
45%
**18
97%
Ramshot Big Game
<<locked>>
81%
48138
60%
**48
100%
[Ramshot Grand]*
<<locked>>
94%
38957
49%
**13
90%
[Ramshot Hunter]*
<<locked>>
81%
34722
43%
**95
94%
[Ramshot Magnum]*
<<locked>>
92%
33141
41%
**59
90%
Ramshot TAC
<<locked>>
81%
55709
70%
**27
99%
Ramshot Wild Boar
<<locked>>
81%
55347
69%
**40
100%
Ramshot X-Terminator
<<locked>>
81%
59567
75%
**59
100%
ReloadSwiss RS 14
<<locked>>
81%
28021
35%
**86
100%
ReloadSwiss RS 40
<<locked>>
81%
62178
78%
**79
100%
ReloadSwiss RS 50
<<locked>>
81%
46267
58%
**76
98%
ReloadSwiss RS 52
<<locked>>
81%
52431
66%
**63
100%
ReloadSwiss RS 60
<<locked>>
81%
42221
53%
**22
100%
ReloadSwiss RS 62
<<locked>>
81%
35549
44%
**35
96%
ReloadSwiss RS 70
<<locked>>
81%
34780
44%
**35
95%
Rottweil R 901
<<locked>>
81%
56057
70%
**77
100%
Rottweil R 902
<<locked>>
81%
49719
62%
**99
100%
Rottweil R 903
<<locked>>
81%
42917
54%
**23
100%
[Rottweil R 904]*
<<locked>>
86%
37391
47%
**98
90%
[Rottweil R 905]*
<<locked>>
85%
33214
42%
**52
90%
[Rottweil R 907]*
<<locked>>
81%
40364
51%
**38
94%
SNPE Vectan BA6 1/2
<<locked>>
81%
65760
82%
**51
100%
SNPE Vectan SP 11
<<locked>>
81%
44034
55%
**82
99%
SNPE Vectan SP 3
<<locked>>
81%
65253
82%
**63
100%
SNPE Vectan SP 7
<<locked>>
81%
54534
68%
**07
100%
SNPE Vectan SP 9
<<locked>>
81%
51750
65%
**77
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
53113
66%
**82
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
44773
56%
**51
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
38493
48%
**62
95%
[SNPE Vectan Tubal 8000]*
<<locked>>
85%
33504
42%
**56
90%
Shooters World Long Rifle
<<locked>>
81%
39160
49%
**21
96%
Shooters World Match Rifle
<<locked>>
81%
53287
67%
**71
100%
Shooters World Precision
<<locked>>
81%
47906
60%
**89
100%
[Shooters World SW4350]*
<<locked>>
81%
37463
47%
**05
94%
Shooters World Tactical Rifle
<<locked>>
81%
65485
82%
**02
100%
Somchem S321
<<locked>>
81%
60800
76%
**86
100%
Somchem S335
<<locked>>
81%
52504
66%
**79
100%
Somchem S341
<<locked>>
81%
54099
68%
**90
100%
Somchem S355
<<locked>>
81%
43250
54%
**26
100%
[Somchem S361]*
<<locked>>
87%
40045
50%
**25
90%
Somchem S365
<<locked>>
81%
32300
40%
**69
99%
[Somchem S385]*
<<locked>>
82%
31111
39%
**64
90%
Vihtavuori N130
<<locked>>
81%
59640
75%
**31
100%
Vihtavuori N133
<<locked>>
81%
53664
67%
**66
100%
Vihtavuori N135
<<locked>>
81%
47239
59%
**33
100%
Vihtavuori N140
<<locked>>
81%
49966
63%
**76
100%
Vihtavuori N150
<<locked>>
81%
41495
52%
**61
100%
Vihtavuori N160
<<locked>>
81%
37217
47%
**12
97%
[Vihtavuori N165]*
<<locked>>
87%
32068
40%
**87
90%
Vihtavuori N530
<<locked>>
81%
55956
70%
**04
100%
Vihtavuori N540
<<locked>>
81%
48254
60%
**72
100%
Vihtavuori N550
<<locked>>
81%
36637
46%
**12
97%
[Vihtavuori N555]*
<<locked>>
81%
27949
35%
**48
94%
[Vihtavuori N560]*
<<locked>>
92%
40147
50%
**53
90%
Winchester 6.5 StaBALL
<<locked>>
81%
36695
46%
**89
99%
Winchester 748
<<locked>>
81%
56246
70%
**46
100%
[Winchester 760]*
<<locked>>
81%
38058
48%
**67
94%
[Winchester StaBALL HD]*
<<locked>>
82%
23134
29%
**20
90%
Winchester StaBALL Match
<<locked>>
81%
51866
65%
**81
100%
[Winchester Supreme 780]*
<<locked>>
87%
34243
43%
**43
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

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