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Load data for .270 Win. Ackley Improved + .277 | 150gr | Barnes MRX BT

Recommended Powder(s): Hodgdon H414, Hodgdon Superperformance, ReloadSwiss RS 62, ReloadSwiss RS 70, Winchester 760

.270 Win. Ackley Improved + .277 | 150gr | Barnes MRX BT

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.277 | 150gr | Barnes MRX BT
Manufacturer SKU:
27785
Bullet Weight:
150gr | 9.7g
Bullet Diameter:
0.277" | 7.04mm
Bullet Length:
1.400" | 35.6mm
Caliber:
.270 Win. Ackley Improved load data
Case Length (l3):
2.540" | 64.5mm
Cartridge Length (C.O.L.):
3.290" | 83.6mm
Seated Depth:
0.650" | 16.5mm
Shank Seated Depth:
0.525" | 13.3mm
Case Capacity:
70.0 Grains of Water | 4.55 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
72519 psi | 5000 bar
LID:
LID_B549_C272
Last updated:
2026-01-12
Recommended Twist Rate:
1:9 - 1:8

Load data for 224 loads in caliber .270 Win. Ackley Improved with .277 | 150gr | Barnes MRX BT bullet and 112 powders such as Hodgdon H414, Hodgdon Superperformance, ReloadSwiss RS 62, 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>>
86%
64861
89%
**98
101%
ADI AR 2206H
<<locked>>
86%
64324
89%
**81
100%
ADI AR 2208
<<locked>>
92%
64977
90%
**74
100%
ADI AR 2209
<<locked>>
97%
53127
73%
**08
98%
ADI AR 2213
<<locked>>
97%
48254
67%
**43
95%
Accurate 2200
<<locked>>
85%
64527
89%
**64
100%
Accurate 2495
<<locked>>
84%
64339
89%
**02
100%
Accurate 2520
<<locked>>
84%
64600
89%
**41
100%
Accurate 2700
<<locked>>
92%
65064
90%
**38
100%
Accurate 3100
<<locked>>
97%
46499
64%
**61
99%
Accurate 4064
<<locked>>
90%
64629
89%
**35
100%
Accurate 4350
<<locked>>
97%
64165
88%
**33
100%
[Accurate MAGPRO]*
<<locked>>
97%
45484
63%
**20
92%
Alliant AR-Comp
<<locked>>
84%
64846
89%
**76
100%
Alliant Reloder- TS 15.5
<<locked>>
91%
64629
89%
**81
100%
Alliant Reloder-15
<<locked>>
89%
64658
89%
**04
100%
Alliant Reloder-16
<<locked>>
97%
60829
84%
**40
100%
Alliant Reloder-17
<<locked>>
94%
64629
89%
**82
100%
Alliant Reloder-19
<<locked>>
97%
52678
73%
**95
98%
Alliant Reloder-22
<<locked>>
97%
46876
65%
**46
97%
Alliant Reloder-23
<<locked>>
97%
44643
62%
**00
100%
Alliant Reloder-25
<<locked>>
97%
38406
53%
**98
98%
Alliant Reloder-26
<<locked>>
97%
49661
68%
**67
100%
Baschieri & Pellagri 107
<<locked>>
86%
65050
90%
**10
100%
Bofors RP15
<<locked>>
97%
43105
59%
**71
95%
Bofors RP3
<<locked>>
90%
64527
89%
**81
100%
Bofors RP5
<<locked>>
97%
46876
65%
**46
97%
Bofors RP7
<<locked>>
95%
64310
89%
**81
100%
Hodgdon BL-C2
<<locked>>
84%
65079
90%
**94
100%
Hodgdon Benchmark
<<locked>>
85%
65122
90%
**12
100%
Hodgdon CFE223
<<locked>>
89%
64426
89%
**36
100%
Hodgdon H380
<<locked>>
90%
64658
89%
**04
100%
Hodgdon H414 👍
<<locked>>
93%
65122
90%
**72
100%
Hodgdon H4350
<<locked>>
97%
58508
81%
**22
99%
[Hodgdon H4831]*
<<locked>>
96%
44164
61%
**18
93%
Hodgdon H4831 SC
<<locked>>
97%
50618
70%
**33
95%
Hodgdon Hybrid 100V
<<locked>>
97%
57682
80%
**12
100%
Hodgdon LVR
<<locked>>
95%
64600
89%
**36
100%
Hodgdon Superperformance 👍
<<locked>>
95%
64600
89%
**95
100%
Hodgdon VARGET
<<locked>>
92%
64556
89%
**71
100%
Hodgdon TrailBoss
<<locked>>
96%
34287
47%
**73
100%
IMR 3031
<<locked>>
88%
64571
89%
**41
100%
IMR 4064
<<locked>>
92%
64513
89%
**64
100%
IMR 4166 Enduron
<<locked>>
93%
64092
88%
**61
100%
IMR 4350
<<locked>>
97%
60887
84%
**58
99%
IMR 4451 Enduron
<<locked>>
94%
64165
88%
**84
100%
IMR 4831
<<locked>>
97%
53824
74%
**79
100%
IMR 4895
<<locked>>
88%
65006
90%
**13
100%
IMR 4955 Enduron
<<locked>>
97%
50227
69%
**94
95%
IMR 7828 SSC
<<locked>>
97%
48994
68%
**76
95%
IMR 8208 XBR
<<locked>>
85%
64600
89%
**48
100%
Lovex D073.6
<<locked>>
86%
65253
90%
**48
100%
Lovex S060
<<locked>>
87%
65253
90%
**35
100%
Lovex S062
<<locked>>
90%
64136
88%
**44
100%
Lovex S065
<<locked>>
96%
64411
89%
**77
100%
Lovex S070
<<locked>>
97%
63643
88%
**00
100%
Lovex S071
<<locked>>
97%
39204
54%
**23
97%
Norma 201
<<locked>>
87%
64411
89%
**38
100%
Norma 202
<<locked>>
87%
64759
89%
**31
100%
Norma 203B
<<locked>>
89%
64817
89%
**00
100%
Norma 204
<<locked>>
97%
63425
87%
**30
99%
Norma MRP
<<locked>>
97%
49008
68%
**12
98%
Norma URP
<<locked>>
97%
62395
86%
**17
100%
Ramshot Big Game
<<locked>>
89%
65267
90%
**23
100%
Ramshot Grand
<<locked>>
97%
52591
73%
**48
97%
Ramshot Hunter
<<locked>>
97%
61583
85%
**27
100%
Ramshot Magnum
<<locked>>
97%
45252
62%
**00
97%
Ramshot TAC
<<locked>>
85%
64672
89%
**81
100%
Ramshot Wild Boar
<<locked>>
85%
64730
89%
**90
100%
ReloadSwiss RS 14
<<locked>>
97%
35563
49%
**22
100%
ReloadSwiss RS 50
<<locked>>
90%
64440
89%
**87
100%
ReloadSwiss RS 52
<<locked>>
86%
63933
88%
**53
100%
ReloadSwiss RS 60
<<locked>>
92%
65050
90%
**92
100%
ReloadSwiss RS 62 👍
<<locked>>
97%
64556
89%
**63
100%
ReloadSwiss RS 70 👍
<<locked>>
97%
62584
86%
**89
100%
ReloadSwiss RS 76
<<locked>>
97%
37594
52%
**08
95%
Rottweil R 901
<<locked>>
84%
64281
89%
**02
100%
Rottweil R 902
<<locked>>
88%
64165
88%
**31
100%
Rottweil R 903
<<locked>>
92%
64223
89%
**74
100%
Rottweil R 904
<<locked>>
97%
55651
77%
**89
97%
Rottweil R 905
<<locked>>
97%
51967
72%
**85
98%
Rottweil R 907
<<locked>>
95%
64310
89%
**81
100%
SNPE Vectan SP 11
<<locked>>
92%
64992
90%
**20
100%
SNPE Vectan SP 7
<<locked>>
85%
64542
89%
**71
100%
SNPE Vectan SP 9
<<locked>>
87%
64281
89%
**74
100%
SNPE Vectan Tubal 3000
<<locked>>
86%
64194
89%
**49
100%
SNPE Vectan Tubal 5000
<<locked>>
92%
64948
90%
**43
100%
SNPE Vectan Tubal 7000
<<locked>>
96%
65021
90%
**48
100%
Shooters World Long Rifle
<<locked>>
96%
64411
89%
**77
100%
Shooters World Match Rifle
<<locked>>
86%
65253
90%
**48
100%
Shooters World Precision
<<locked>>
90%
64136
88%
**44
100%
Somchem S335
<<locked>>
87%
64803
89%
**62
100%
Somchem S341
<<locked>>
85%
64092
88%
**51
100%
Somchem S355
<<locked>>
92%
64455
89%
**74
100%
Somchem S361
<<locked>>
97%
57014
79%
**82
96%
Somchem S365
<<locked>>
97%
57246
79%
**58
100%
Somchem S385
<<locked>>
97%
53055
73%
**72
99%
Vihtavuori N130
<<locked>>
83%
64426
89%
**13
100%
Vihtavuori N133
<<locked>>
89%
65006
90%
**36
100%
Vihtavuori N135
<<locked>>
94%
64629
89%
**79
100%
Vihtavuori N140
<<locked>>
89%
65122
90%
**99
100%
Vihtavuori N150
<<locked>>
97%
62613
86%
**12
100%
Vihtavuori N160
<<locked>>
95%
64687
89%
**04
100%
Vihtavuori N165
<<locked>>
97%
43932
61%
**08
96%
Vihtavuori N540
<<locked>>
89%
64324
89%
**31
100%
Vihtavuori N550
<<locked>>
95%
64788
89%
**46
100%
Vihtavuori N555
<<locked>>
97%
49588
68%
**72
100%
Vihtavuori N560
<<locked>>
97%
46978
65%
**62
95%
[Vihtavuori N565]*
<<locked>>
97%
39363
54%
**05
92%
Winchester 6.5 StaBALL
<<locked>>
96%
64687
89%
**71
100%
Winchester 760 👍
<<locked>>
93%
65122
90%
**72
100%
Winchester StaBALL HD
<<locked>>
97%
38392
53%
**36
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59364
82%
**23
100%
ADI AR 2206H
<<locked>>
81%
55085
76%
**56
100%
ADI AR 2208
<<locked>>
81%
46601
64%
**12
100%
[ADI AR 2209]*
<<locked>>
81%
32169
44%
**62
90%
[ADI AR 2213]*
<<locked>>
88%
36187
50%
**90
90%
Accurate 2200
<<locked>>
81%
57116
79%
**62
100%
Accurate 2495
<<locked>>
81%
58479
81%
**36
100%
Accurate 2520
<<locked>>
81%
58972
81%
**76
100%
Accurate 2700
<<locked>>
81%
45223
62%
**46
97%
[Accurate 3100]*
<<locked>>
81%
27427
38%
**44
92%
Accurate 4064
<<locked>>
81%
49501
68%
**35
100%
Accurate 4350
<<locked>>
81%
37536
52%
**07
98%
[Accurate MAGPRO]*
<<locked>>
93%
40799
56%
**28
90%
Alliant AR-Comp
<<locked>>
81%
59001
81%
**13
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
47065
65%
**38
100%
Alliant Reloder-15
<<locked>>
81%
50401
70%
**03
100%
Alliant Reloder-16
<<locked>>
81%
36651
51%
**13
98%
Alliant Reloder-17
<<locked>>
81%
41495
57%
**41
100%
[Alliant Reloder-19]*
<<locked>>
81%
31966
44%
**72
91%
[Alliant Reloder-22]*
<<locked>>
84%
31125
43%
**85
90%
Alliant Reloder-23
<<locked>>
81%
26934
37%
**77
96%
[Alliant Reloder-25]*
<<locked>>
84%
25759
36%
**34
90%
[Alliant Reloder-26]*
<<locked>>
81%
28558
39%
**72
94%
Baschieri & Pellagri 107
<<locked>>
81%
54781
76%
**76
100%
[Bofors RP15]*
<<locked>>
87%
31850
44%
**02
90%
Bofors RP3
<<locked>>
81%
47442
65%
**48
100%
[Bofors RP5]*
<<locked>>
84%
31125
43%
**85
90%
Bofors RP7
<<locked>>
81%
42047
58%
**30
96%
Hodgdon BL-C2
<<locked>>
81%
58668
81%
**15
100%
Hodgdon Benchmark
<<locked>>
81%
58624
81%
**30
100%
Hodgdon CFE223
<<locked>>
81%
49458
68%
**26
100%
Hodgdon H380
<<locked>>
81%
47790
66%
**61
100%
Hodgdon H414
<<locked>>
81%
43134
59%
**28
97%
[Hodgdon H4350]*
<<locked>>
81%
35810
49%
**11
94%
[Hodgdon H4831]*
<<locked>>
91%
36796
51%
**64
90%
[Hodgdon H4831 SC]*
<<locked>>
88%
37202
51%
**74
90%
Hodgdon Hybrid 100V
<<locked>>
81%
34069
47%
**11
99%
Hodgdon LVR
<<locked>>
81%
40509
56%
**52
98%
Hodgdon Superperformance
<<locked>>
81%
38653
53%
**62
95%
Hodgdon VARGET
<<locked>>
81%
46253
64%
**05
100%
Hodgdon TrailBoss
<<locked>>
92%
32750
45%
**40
100%
IMR 3031
<<locked>>
81%
51851
71%
**80
100%
IMR 4064
<<locked>>
81%
46006
63%
**89
100%
IMR 4166 Enduron
<<locked>>
81%
45455
63%
**62
98%
IMR 4350
<<locked>>
81%
37434
52%
**48
95%
IMR 4451 Enduron
<<locked>>
81%
43134
59%
**46
97%
IMR 4831
<<locked>>
81%
33025
46%
**88
97%
IMR 4895
<<locked>>
81%
51764
71%
**30
100%
[IMR 4955 Enduron]*
<<locked>>
86%
35969
50%
**08
90%
[IMR 7828 SSC]*
<<locked>>
88%
35998
50%
**93
90%
IMR 8208 XBR
<<locked>>
81%
57348
79%
**53
100%
Lovex D073.6
<<locked>>
81%
55550
77%
**33
100%
Lovex S060
<<locked>>
81%
53969
74%
**80
100%
Lovex S062
<<locked>>
81%
49385
68%
**41
100%
Lovex S065
<<locked>>
81%
40915
56%
**03
98%
Lovex S070
<<locked>>
81%
38972
54%
**84
96%
[Lovex S071]*
<<locked>>
82%
24584
34%
**59
90%
Norma 201
<<locked>>
81%
54099
75%
**07
100%
Norma 202
<<locked>>
81%
54563
75%
**94
100%
Norma 203B
<<locked>>
81%
49908
69%
**94
100%
[Norma 204]*
<<locked>>
81%
36666
51%
**70
93%
[Norma MRP]*
<<locked>>
81%
29008
40%
**49
90%
Norma URP
<<locked>>
81%
37463
52%
**00
98%
Ramshot Big Game
<<locked>>
81%
50125
69%
**10
100%
[Ramshot Grand]*
<<locked>>
86%
35418
49%
**90
90%
Ramshot Hunter
<<locked>>
81%
36114
50%
**80
96%
[Ramshot Magnum]*
<<locked>>
86%
30589
42%
**52
90%
Ramshot TAC
<<locked>>
81%
57392
79%
**85
100%
Ramshot Wild Boar
<<locked>>
81%
57566
79%
**95
100%
ReloadSwiss RS 14
<<locked>>
89%
31734
44%
**50
100%
ReloadSwiss RS 50
<<locked>>
81%
48022
66%
**44
99%
ReloadSwiss RS 52
<<locked>>
81%
54491
75%
**18
100%
ReloadSwiss RS 60
<<locked>>
81%
44237
61%
**90
100%
ReloadSwiss RS 62
<<locked>>
81%
37217
51%
**26
98%
ReloadSwiss RS 70
<<locked>>
81%
36390
50%
**33
97%
[ReloadSwiss RS 76]*
<<locked>>
91%
30980
43%
**18
90%
Rottweil R 901
<<locked>>
81%
58073
80%
**17
100%
Rottweil R 902
<<locked>>
81%
51111
70%
**54
100%
Rottweil R 903
<<locked>>
81%
44744
62%
**98
100%
[Rottweil R 904]*
<<locked>>
82%
34171
47%
**75
90%
[Rottweil R 905]*
<<locked>>
81%
30951
43%
**49
90%
Rottweil R 907
<<locked>>
81%
42047
58%
**30
96%
SNPE Vectan SP 11
<<locked>>
81%
45716
63%
**48
100%
SNPE Vectan SP 7
<<locked>>
81%
56188
77%
**62
100%
SNPE Vectan SP 9
<<locked>>
81%
53447
74%
**30
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
54766
76%
**38
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
46180
64%
**07
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
40176
55%
**57
96%
Shooters World Long Rifle
<<locked>>
81%
40915
56%
**03
98%
Shooters World Match Rifle
<<locked>>
81%
55550
77%
**33
100%
Shooters World Precision
<<locked>>
81%
49385
68%
**41
100%
Somchem S335
<<locked>>
81%
54679
75%
**31
100%
Somchem S341
<<locked>>
81%
55825
77%
**46
100%
Somchem S355
<<locked>>
81%
45237
62%
**98
100%
[Somchem S361]*
<<locked>>
83%
36463
50%
**05
90%
Somchem S365
<<locked>>
81%
33576
46%
**54
100%
[Somchem S385]*
<<locked>>
81%
31430
43%
**39
92%
Vihtavuori N130
<<locked>>
81%
60176
83%
**61
100%
Vihtavuori N133
<<locked>>
81%
51561
71%
**69
100%
Vihtavuori N135
<<locked>>
81%
44092
61%
**10
100%
Vihtavuori N140
<<locked>>
81%
50879
70%
**21
100%
Vihtavuori N150
<<locked>>
81%
38392
53%
**41
100%
Vihtavuori N160
<<locked>>
81%
40480
56%
**30
99%
[Vihtavuori N165]*
<<locked>>
84%
29486
41%
**83
90%
Vihtavuori N540
<<locked>>
81%
50676
70%
**48
100%
Vihtavuori N550
<<locked>>
81%
40843
56%
**69
99%
Vihtavuori N555
<<locked>>
81%
29341
40%
**49
96%
[Vihtavuori N560]*
<<locked>>
89%
36680
51%
**36
90%
[Vihtavuori N565]*
<<locked>>
93%
35259
49%
**00
90%
Winchester 6.5 StaBALL
<<locked>>
81%
37971
52%
**70
100%
Winchester 760
<<locked>>
81%
43134
59%
**28
97%
[Winchester StaBALL HD]*
<<locked>>
81%
23670
33%
**31
94%

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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