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Load data for .270 Win. Ackley Improved + .277 | 150gr | Sierra SBT GameKing

Recommended Powder(s): Hodgdon H414, Hodgdon Superperformance, Ramshot Hunter, ReloadSwiss RS 70, Winchester 760

.270 Win. Ackley Improved + .277 | 150gr | Sierra SBT GameKing

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.277 | 150gr | Sierra SBT GameKing
Manufacturer SKU:
1840
Bullet Weight:
150gr | 9.7g
Bullet Diameter:
0.277" | 7.04mm
Bullet Length:
<<locked>>
Caliber:
.270 Win. Ackley Improved load data
Case Length (l3):
2.540" | 64.5mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
Case Capacity:
70.0 Grains of Water | 4.55 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
72519 psi | 5000 bar
LID:
LID_B5831_C272
Last updated:
2026-01-21
Recommended Twist Rate:
1:11 - 1:9

Load data for 224 loads in caliber .270 Win. Ackley Improved with .277 | 150gr | Sierra SBT GameKing bullet and 112 powders such as Hodgdon H414, Hodgdon Superperformance, Ramshot Hunter, 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.

    .

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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>>
86%
65079
90%
**24
101%
ADI AR 2206H
<<locked>>
85%
65079
90%
**07
100%
ADI AR 2208
<<locked>>
90%
64324
89%
**84
100%
ADI AR 2209
<<locked>>
97%
55869
77%
**61
98%
ADI AR 2213
<<locked>>
97%
50111
69%
**99
96%
[ADI AR 2225]*
<<locked>>
97%
32532
45%
**54
93%
Accurate 2200
<<locked>>
84%
64455
89%
**77
100%
Accurate 2700
<<locked>>
91%
65093
90%
**61
100%
Accurate 3100
<<locked>>
97%
49719
69%
**33
99%
Accurate 4064
<<locked>>
88%
64382
89%
**41
100%
Accurate 4350
<<locked>>
95%
64411
89%
**46
100%
[Accurate MAGPRO]*
<<locked>>
97%
48776
67%
**92
94%
Alliant Power Pro 2000-MR
<<locked>>
86%
64353
89%
**18
100%
Alliant Reloder- TS 15.5
<<locked>>
90%
65209
90%
**00
100%
Alliant Reloder-15
<<locked>>
88%
65064
90%
**23
100%
Alliant Reloder-16
<<locked>>
97%
63628
88%
**82
100%
Alliant Reloder-17
<<locked>>
92%
64513
89%
**95
100%
Alliant Reloder-19
<<locked>>
97%
55724
77%
**58
98%
Alliant Reloder-22
<<locked>>
97%
49110
68%
**95
97%
Alliant Reloder-23
<<locked>>
97%
46934
65%
**49
100%
Alliant Reloder-25
<<locked>>
97%
40553
56%
**57
98%
Alliant Reloder-26
<<locked>>
97%
53301
74%
**27
100%
Baschieri & Pellagri 107
<<locked>>
85%
64948
90%
**23
100%
[Baschieri & Pellagri 109]*
<<locked>>
97%
50140
69%
**13
92%
Bofors RP15
<<locked>>
97%
45020
62%
**20
96%
Bofors RP3
<<locked>>
89%
65180
90%
**07
100%
[Bofors RP30]*
<<locked>>
97%
36927
51%
**72
92%
Bofors RP5
<<locked>>
97%
49110
68%
**95
97%
Bofors RP7
<<locked>>
94%
64353
89%
**04
100%
Hodgdon Benchmark
<<locked>>
83%
64571
89%
**15
100%
Hodgdon CFE223
<<locked>>
87%
64629
89%
**53
100%
Hodgdon H380
<<locked>>
89%
64455
89%
**13
100%
Hodgdon H414 👍
<<locked>>
92%
64571
89%
**76
100%
Hodgdon H4350
<<locked>>
97%
60655
84%
**71
99%
[Hodgdon H4831]*
<<locked>>
96%
46064
64%
**71
94%
Hodgdon H4831 SC
<<locked>>
97%
52431
72%
**85
96%
Hodgdon Hybrid 100V
<<locked>>
97%
60263
83%
**51
100%
Hodgdon LVR
<<locked>>
94%
65050
90%
**63
100%
[Hodgdon Retumbo]*
<<locked>>
97%
32532
45%
**54
93%
Hodgdon Superperformance 👍
<<locked>>
94%
64861
89%
**15
100%
Hodgdon VARGET
<<locked>>
91%
64890
89%
**90
100%
Hodgdon TrailBoss
<<locked>>
96%
34824
48%
**96
100%
IMR 3031
<<locked>>
87%
65195
90%
**61
100%
IMR 4064
<<locked>>
91%
64556
89%
**74
100%
IMR 4166 Enduron
<<locked>>
92%
65035
90%
**87
100%
IMR 4350
<<locked>>
97%
63701
88%
**13
100%
IMR 4451 Enduron
<<locked>>
93%
64861
89%
**13
100%
IMR 4831
<<locked>>
96%
55941
77%
**22
100%
IMR 4895
<<locked>>
87%
64643
89%
**20
100%
IMR 4955 Enduron
<<locked>>
97%
52127
72%
**40
96%
IMR 7828 SSC
<<locked>>
97%
52011
72%
**48
97%
IMR 8208 XBR
<<locked>>
84%
65253
90%
**64
100%
Lovex D073.6
<<locked>>
85%
64759
89%
**54
100%
Lovex S060
<<locked>>
86%
64687
89%
**44
100%
Lovex S062
<<locked>>
89%
64934
90%
**67
100%
Lovex S065
<<locked>>
95%
64411
89%
**97
100%
Lovex S070
<<locked>>
96%
64861
89%
**30
100%
Lovex S071
<<locked>>
97%
41437
57%
**85
98%
Norma 201
<<locked>>
86%
65137
90%
**61
100%
Norma 202
<<locked>>
85%
64397
89%
**38
100%
Norma 203B
<<locked>>
88%
64208
89%
**10
100%
Norma 204
<<locked>>
96%
64817
89%
**66
99%
Norma MRP
<<locked>>
97%
52069
72%
**74
99%
Norma URP
<<locked>>
97%
65050
90%
**56
100%
Ramshot Big Game
<<locked>>
87%
65064
90%
**30
100%
Ramshot Grand
<<locked>>
97%
54969
76%
**04
98%
Ramshot Hunter 👍
<<locked>>
97%
64542
89%
**76
100%
Ramshot Magnum
<<locked>>
97%
47427
65%
**53
98%
Ramshot TAC
<<locked>>
83%
64527
89%
**87
100%
Ramshot Wild Boar
<<locked>>
83%
64774
89%
**07
100%
ReloadSwiss RS 14
<<locked>>
96%
35404
49%
**36
100%
ReloadSwiss RS 50
<<locked>>
89%
64687
89%
**04
100%
ReloadSwiss RS 52
<<locked>>
85%
64252
89%
**63
100%
ReloadSwiss RS 60
<<locked>>
91%
64919
90%
**95
100%
ReloadSwiss RS 62
<<locked>>
95%
64165
88%
**69
100%
ReloadSwiss RS 70 👍
<<locked>>
96%
65267
90%
**38
100%
ReloadSwiss RS 76
<<locked>>
97%
39276
54%
**67
96%
Rottweil R 901
<<locked>>
83%
64223
89%
**12
100%
Rottweil R 902
<<locked>>
88%
64875
89%
**48
100%
Rottweil R 903
<<locked>>
91%
64919
90%
**94
100%
Rottweil R 904
<<locked>>
97%
57725
80%
**41
98%
Rottweil R 905
<<locked>>
97%
54317
75%
**41
98%
Rottweil R 907
<<locked>>
94%
64353
89%
**04
100%
SNPE Vectan SP 11
<<locked>>
90%
64803
89%
**30
100%
SNPE Vectan SP 7
<<locked>>
84%
64353
89%
**84
100%
SNPE Vectan SP 9
<<locked>>
86%
64368
89%
**90
100%
SNPE Vectan Tubal 3000
<<locked>>
86%
64934
90%
**69
100%
SNPE Vectan Tubal 5000
<<locked>>
91%
64382
89%
**56
100%
SNPE Vectan Tubal 7000
<<locked>>
95%
65006
90%
**58
100%
Shooters World Long Rifle
<<locked>>
95%
64411
89%
**97
100%
Shooters World Match Rifle
<<locked>>
85%
64759
89%
**54
100%
Shooters World Precision
<<locked>>
89%
64934
90%
**67
100%
Somchem S335
<<locked>>
85%
64353
89%
**69
100%
Somchem S341
<<locked>>
84%
64992
90%
**81
100%
Somchem S355
<<locked>>
91%
64817
89%
**90
100%
Somchem S361
<<locked>>
97%
60147
83%
**44
97%
Somchem S365
<<locked>>
97%
60655
84%
**13
100%
Somchem S385
<<locked>>
97%
55027
76%
**22
99%
Vihtavuori N133
<<locked>>
88%
65180
90%
**53
100%
Vihtavuori N135
<<locked>>
93%
64875
89%
**95
100%
Vihtavuori N140
<<locked>>
87%
64629
89%
**12
100%
Vihtavuori N150
<<locked>>
97%
65267
90%
**54
100%
Vihtavuori N160
<<locked>>
94%
64963
90%
**13
100%
Vihtavuori N165
<<locked>>
97%
45847
63%
**54
97%
Vihtavuori N540
<<locked>>
88%
64905
89%
**48
100%
Vihtavuori N550
<<locked>>
94%
64484
89%
**59
100%
Vihtavuori N555
<<locked>>
97%
52025
72%
**18
100%
Vihtavuori N560
<<locked>>
97%
49400
68%
**12
95%
[Vihtavuori N565]*
<<locked>>
97%
41989
58%
**64
94%
Winchester 6.5 StaBALL
<<locked>>
95%
64803
89%
**87
100%
Winchester 760 👍
<<locked>>
92%
64571
89%
**76
100%
Winchester StaBALL HD
<<locked>>
97%
41336
57%
**95
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59843
83%
**52
101%
ADI AR 2206H
<<locked>>
81%
57043
79%
**92
100%
ADI AR 2208
<<locked>>
81%
48356
67%
**54
100%
[ADI AR 2209]*
<<locked>>
81%
33692
46%
**18
92%
[ADI AR 2213]*
<<locked>>
86%
35404
49%
**84
90%
[ADI AR 2225]*
<<locked>>
94%
29573
41%
**62
90%
Accurate 2200
<<locked>>
81%
59205
82%
**08
100%
Accurate 2700
<<locked>>
81%
46456
64%
**85
97%
[Accurate 3100]*
<<locked>>
81%
28892
40%
**90
93%
Accurate 4064
<<locked>>
81%
51576
71%
**74
100%
Accurate 4350
<<locked>>
81%
39407
54%
**56
99%
[Accurate MAGPRO]*
<<locked>>
91%
39334
54%
**05
90%
Alliant Power Pro 2000-MR
<<locked>>
81%
53867
74%
**67
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
48878
67%
**77
100%
Alliant Reloder-15
<<locked>>
81%
52344
72%
**43
100%
Alliant Reloder-16
<<locked>>
81%
38261
53%
**62
99%
Alliant Reloder-17
<<locked>>
81%
43584
60%
**87
100%
[Alliant Reloder-19]*
<<locked>>
81%
33330
46%
**11
92%
[Alliant Reloder-22]*
<<locked>>
82%
30647
42%
**82
90%
Alliant Reloder-23
<<locked>>
81%
28181
39%
**23
97%
[Alliant Reloder-25]*
<<locked>>
82%
25367
35%
**31
90%
Alliant Reloder-26
<<locked>>
81%
29965
41%
**31
95%
Baschieri & Pellagri 107
<<locked>>
81%
56840
78%
**15
100%
[Baschieri & Pellagri 109]*
<<locked>>
93%
44860
62%
**12
90%
[Bofors RP15]*
<<locked>>
85%
30937
43%
**85
90%
Bofors RP3
<<locked>>
81%
49226
68%
**84
100%
[Bofors RP30]*
<<locked>>
93%
32895
45%
**70
90%
[Bofors RP5]*
<<locked>>
82%
30647
42%
**82
90%
Bofors RP7
<<locked>>
81%
43627
60%
**66
97%
Hodgdon Benchmark
<<locked>>
81%
60437
83%
**66
100%
Hodgdon CFE223
<<locked>>
81%
51909
72%
**72
100%
Hodgdon H380
<<locked>>
81%
50038
69%
**07
100%
Hodgdon H414
<<locked>>
81%
45136
62%
**71
98%
Hodgdon H4350
<<locked>>
81%
37275
51%
**61
95%
[Hodgdon H4831]*
<<locked>>
89%
36071
50%
**61
90%
[Hodgdon H4831 SC]*
<<locked>>
85%
35810
49%
**54
90%
Hodgdon Hybrid 100V
<<locked>>
81%
35679
49%
**61
99%
Hodgdon LVR
<<locked>>
81%
42163
58%
**05
99%
[Hodgdon Retumbo]*
<<locked>>
94%
29573
41%
**62
90%
Hodgdon Superperformance
<<locked>>
81%
40263
56%
**08
96%
Hodgdon VARGET
<<locked>>
81%
48022
66%
**48
100%
Hodgdon TrailBoss
<<locked>>
92%
32619
45%
**54
100%
IMR 3031
<<locked>>
81%
53737
74%
**17
100%
IMR 4064
<<locked>>
81%
47601
66%
**31
100%
IMR 4166 Enduron
<<locked>>
81%
46572
64%
**02
98%
IMR 4350
<<locked>>
81%
39160
54%
**97
96%
IMR 4451 Enduron
<<locked>>
81%
45078
62%
**05
98%
IMR 4831
<<locked>>
81%
34200
47%
**28
98%
IMR 4895
<<locked>>
81%
53635
74%
**76
100%
[IMR 4955 Enduron]*
<<locked>>
84%
34911
48%
**02
90%
[IMR 7828 SSC]*
<<locked>>
86%
35317
49%
**90
90%
IMR 8208 XBR
<<locked>>
81%
59176
82%
**85
100%
Lovex D073.6
<<locked>>
81%
57334
79%
**69
100%
Lovex S060
<<locked>>
81%
55767
77%
**20
100%
Lovex S062
<<locked>>
81%
51285
71%
**84
100%
Lovex S065
<<locked>>
81%
42511
59%
**49
98%
Lovex S070
<<locked>>
81%
40509
56%
**26
97%
[Lovex S071]*
<<locked>>
81%
24947
34%
**72
91%
Norma 201
<<locked>>
81%
56043
77%
**46
100%
Norma 202
<<locked>>
81%
56521
78%
**40
100%
Norma 203B
<<locked>>
81%
51706
71%
**30
100%
[Norma 204]*
<<locked>>
81%
38363
53%
**20
94%
[Norma MRP]*
<<locked>>
81%
30153
42%
**02
92%
Norma URP
<<locked>>
81%
39247
54%
**49
99%
Ramshot Big Game
<<locked>>
81%
52243
72%
**53
100%
[Ramshot Grand]*
<<locked>>
84%
34940
48%
**97
90%
Ramshot Hunter
<<locked>>
81%
38000
52%
**39
97%
[Ramshot Magnum]*
<<locked>>
84%
30211
42%
**59
90%
Ramshot TAC
<<locked>>
81%
59292
82%
**25
100%
Ramshot Wild Boar
<<locked>>
81%
59683
82%
**35
100%
ReloadSwiss RS 14
<<locked>>
87%
30980
43%
**47
100%
ReloadSwiss RS 50
<<locked>>
81%
49690
69%
**84
99%
ReloadSwiss RS 52
<<locked>>
81%
56840
78%
**67
100%
ReloadSwiss RS 60
<<locked>>
81%
46166
64%
**33
100%
ReloadSwiss RS 62
<<locked>>
81%
39233
54%
**72
98%
ReloadSwiss RS 70
<<locked>>
81%
38014
52%
**75
98%
[ReloadSwiss RS 76]*
<<locked>>
89%
29979
41%
**02
90%
Rottweil R 901
<<locked>>
81%
59988
83%
**62
100%
Rottweil R 902
<<locked>>
81%
53084
73%
**97
100%
Rottweil R 903
<<locked>>
81%
46586
64%
**41
100%
[Rottweil R 904]*
<<locked>>
81%
34882
48%
**05
91%
[Rottweil R 905]*
<<locked>>
81%
32329
45%
**02
92%
Rottweil R 907
<<locked>>
81%
43627
60%
**66
97%
SNPE Vectan SP 11
<<locked>>
81%
47776
66%
**94
100%
SNPE Vectan SP 7
<<locked>>
81%
58291
80%
**05
100%
SNPE Vectan SP 9
<<locked>>
81%
55390
76%
**72
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
56565
78%
**74
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
48037
66%
**46
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
41669
57%
**00
97%
Shooters World Long Rifle
<<locked>>
81%
42511
59%
**49
98%
Shooters World Match Rifle
<<locked>>
81%
57334
79%
**69
100%
Shooters World Precision
<<locked>>
81%
51285
71%
**84
100%
Somchem S335
<<locked>>
81%
56492
78%
**74
100%
Somchem S341
<<locked>>
81%
57870
80%
**92
100%
Somchem S355
<<locked>>
81%
47036
65%
**41
100%
[Somchem S361]*
<<locked>>
81%
36027
50%
**08
90%
Somchem S365
<<locked>>
81%
35665
49%
**13
100%
[Somchem S385]*
<<locked>>
81%
32750
45%
**82
93%
Vihtavuori N133
<<locked>>
81%
53388
74%
**08
100%
Vihtavuori N135
<<locked>>
81%
45759
63%
**46
100%
Vihtavuori N140
<<locked>>
81%
52750
73%
**57
100%
Vihtavuori N150
<<locked>>
81%
40219
55%
**93
100%
Vihtavuori N160
<<locked>>
81%
42148
58%
**79
99%
[Vihtavuori N165]*
<<locked>>
83%
29240
40%
**80
90%
Vihtavuori N540
<<locked>>
81%
52330
72%
**87
100%
Vihtavuori N550
<<locked>>
81%
42960
59%
**18
99%
Vihtavuori N555
<<locked>>
81%
30980
43%
**95
97%
[Vihtavuori N560]*
<<locked>>
87%
35650
49%
**20
90%
[Vihtavuori N565]*
<<locked>>
91%
34563
48%
**97
90%
Winchester 6.5 StaBALL
<<locked>>
81%
39639
55%
**13
100%
Winchester 760
<<locked>>
81%
45136
62%
**71
98%
Winchester StaBALL HD
<<locked>>
81%
24772
34%
**97
95%

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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