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Load data for .270 Win. Ackley Improved + .277 | 100gr | Hornady GMX

Recommended Powder(s): IMR 4895, Norma 203B, Ramshot Big Game, ReloadSwiss RS 52, ReloadSwiss RS 60

.270 Win. Ackley Improved + .277 | 100gr | Hornady GMX

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.277 | 100gr | Hornady GMX
Manufacturer SKU:
27190
Bullet Weight:
100gr | 6.5g
Bullet Diameter:
0.277" | 7.04mm
Bullet Length:
1.097" | 27.9mm
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:
0.347" | 8.8mm
Shank Seated Depth:
0.227" | 5.8mm
Case Capacity:
70.0 Grains of Water | 4.55 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
72519 psi | 5000 bar
LID:
LID_B2602_C272
Last updated:
2026-01-12
Recommended Twist Rate:
1:11 - 1:10

Load data for 216 loads in caliber .270 Win. Ackley Improved with .277 | 100gr | Hornady GMX bullet and 108 powders such as IMR 4895, Norma 203B, Ramshot Big Game, ReloadSwiss RS 52, ReloadSwiss RS 60. 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>>
87%
64890
89%
**97
101%
ADI AR 2206H
<<locked>>
92%
64527
89%
**74
100%
ADI AR 2208
<<locked>>
97%
62207
86%
**15
99%
ADI AR 2219
<<locked>>
84%
65137
90%
**38
100%
Accurate 2015
<<locked>>
89%
65151
90%
**69
100%
Accurate 2200
<<locked>>
90%
64252
89%
**35
99%
Accurate 2230
<<locked>>
86%
64992
90%
**15
100%
Accurate 2460
<<locked>>
86%
64832
89%
**15
100%
Accurate 2495
<<locked>>
91%
64658
89%
**25
100%
Accurate 2520
<<locked>>
90%
64977
90%
**48
100%
Accurate 2700
<<locked>>
97%
61699
85%
**30
96%
Accurate 4064
<<locked>>
97%
64643
89%
**48
100%
Accurate 4350
<<locked>>
96%
48921
67%
**58
97%
Alliant AR-Comp
<<locked>>
90%
64382
89%
**99
100%
Alliant Reloder- TS 15.5
<<locked>>
97%
61902
85%
**42
100%
Alliant Reloder-10x
<<locked>>
86%
64672
89%
**83
100%
Alliant Reloder-15
<<locked>>
95%
64803
89%
**94
100%
Alliant Reloder-16
<<locked>>
97%
48080
66%
**71
97%
Alliant Reloder-17
<<locked>>
97%
55709
77%
**55
100%
[Alliant Reloder-23]*
<<locked>>
97%
34272
47%
**40
94%
[Alliant Reloder-26]*
<<locked>>
97%
37869
52%
**81
92%
Baschieri & Pellagri 106
<<locked>>
85%
64266
89%
**01
100%
Baschieri & Pellagri 107
<<locked>>
92%
64629
89%
**91
100%
Bofors RP3
<<locked>>
97%
63744
88%
**71
100%
Bofors RP7
<<locked>>
97%
55927
77%
**91
95%
Hodgdon BL-C2
<<locked>>
90%
64977
90%
**88
100%
Hodgdon Benchmark
<<locked>>
90%
65209
90%
**06
100%
Hodgdon CFE223
<<locked>>
95%
64266
89%
**17
99%
Hodgdon H322
<<locked>>
89%
65137
90%
**38
100%
Hodgdon H335
<<locked>>
84%
65050
90%
**45
100%
Hodgdon H380
<<locked>>
97%
64905
89%
**81
99%
Hodgdon H414
<<locked>>
97%
57914
80%
**28
96%
Hodgdon H4198
<<locked>>
84%
64832
89%
**53
100%
[Hodgdon H4350]*
<<locked>>
97%
46688
64%
**40
93%
Hodgdon Hybrid 100V
<<locked>>
97%
44411
61%
**36
98%
Hodgdon LVR
<<locked>>
96%
52837
73%
**20
97%
Hodgdon Superperformance
<<locked>>
97%
53635
74%
**53
95%
Hodgdon VARGET
<<locked>>
97%
61931
85%
**19
99%
Hodgdon TrailBoss
<<locked>>
96%
33315
46%
**51
100%
IMR 3031
<<locked>>
95%
64556
89%
**68
100%
IMR 4064
<<locked>>
97%
60568
84%
**83
99%
IMR 4166 Enduron
<<locked>>
96%
59654
82%
**33
97%
IMR 4198
<<locked>>
87%
64614
89%
**40
100%
[IMR 4350]*
<<locked>>
97%
48863
67%
**86
93%
IMR 4451 Enduron
<<locked>>
97%
57711
80%
**27
96%
IMR 4831
<<locked>>
96%
41292
57%
**77
95%
IMR 4895 👍
<<locked>>
95%
65180
90%
**27
100%
IMR 8208 XBR
<<locked>>
91%
64310
89%
**38
100%
Lovex D073.4
<<locked>>
85%
64875
89%
**12
100%
Lovex D073.5
<<locked>>
86%
64455
89%
**12
100%
Lovex D073.6
<<locked>>
92%
64977
90%
**48
100%
Lovex S060
<<locked>>
93%
65238
90%
**19
100%
Lovex S062
<<locked>>
96%
64368
89%
**45
100%
Lovex S065
<<locked>>
97%
53838
74%
**68
97%
Lovex S070
<<locked>>
97%
50763
70%
**25
95%
Norma 201
<<locked>>
93%
64426
89%
**35
100%
Norma 202
<<locked>>
93%
64585
89%
**28
100%
Norma 203B 👍
<<locked>>
96%
64745
89%
**01
100%
[Norma 204]*
<<locked>>
97%
50082
69%
**38
92%
Norma URP
<<locked>>
97%
48486
67%
**55
97%
Ramshot Big Game 👍
<<locked>>
95%
65195
90%
**14
100%
Ramshot Hunter
<<locked>>
97%
48196
66%
**48
95%
Ramshot TAC
<<locked>>
90%
64600
89%
**42
99%
Ramshot Wild Boar
<<locked>>
91%
64542
89%
**74
100%
Ramshot X-Terminator
<<locked>>
88%
64672
89%
**25
100%
ReloadSwiss RS 14
<<locked>>
96%
33562
46%
**96
100%
ReloadSwiss RS 40
<<locked>>
87%
64571
89%
**32
100%
ReloadSwiss RS 50
<<locked>>
96%
64092
88%
**35
98%
ReloadSwiss RS 52 👍
<<locked>>
93%
64585
89%
**56
100%
ReloadSwiss RS 60 👍
<<locked>>
97%
59538
82%
**20
100%
ReloadSwiss RS 62
<<locked>>
97%
49269
68%
**94
97%
ReloadSwiss RS 70
<<locked>>
97%
49545
68%
**10
96%
Rottweil R 901
<<locked>>
91%
64368
89%
**09
100%
Rottweil R 902
<<locked>>
95%
65224
90%
**35
100%
Rottweil R 903
<<locked>>
97%
58668
81%
**83
100%
Rottweil R 907
<<locked>>
97%
55927
77%
**91
95%
SNPE Vectan BA6 1/2
<<locked>>
84%
64527
89%
**45
100%
SNPE Vectan SP 10
<<locked>>
84%
65238
90%
**42
100%
SNPE Vectan SP 11
<<locked>>
97%
61685
85%
**68
100%
SNPE Vectan SP 7
<<locked>>
91%
64643
89%
**48
99%
SNPE Vectan SP 9
<<locked>>
93%
65224
90%
**78
100%
SNPE Vectan Tubal 3000
<<locked>>
92%
64585
89%
**43
100%
SNPE Vectan Tubal 5000
<<locked>>
97%
61627
85%
**91
100%
SNPE Vectan Tubal 7000
<<locked>>
97%
54157
75%
**12
95%
Shooters World Long Rifle
<<locked>>
97%
53838
74%
**68
97%
Shooters World Match Rifle
<<locked>>
92%
64977
90%
**48
100%
Shooters World Precision
<<locked>>
96%
64368
89%
**45
100%
Shooters World Tactical Rifle
<<locked>>
85%
64875
89%
**02
100%
Somchem S321
<<locked>>
88%
64498
89%
**51
100%
Somchem S335
<<locked>>
93%
64266
89%
**46
100%
Somchem S341
<<locked>>
92%
64730
89%
**45
100%
Somchem S355
<<locked>>
97%
59625
82%
**89
100%
Somchem S365
<<locked>>
97%
43221
60%
**92
99%
Vihtavuori N120
<<locked>>
84%
64556
89%
**48
100%
Vihtavuori N130
<<locked>>
89%
64237
89%
**14
100%
Vihtavuori N133
<<locked>>
95%
64759
89%
**40
100%
Vihtavuori N135
<<locked>>
97%
56652
78%
**81
100%
Vihtavuori N140
<<locked>>
95%
64455
89%
**92
100%
Vihtavuori N150
<<locked>>
97%
50604
70%
**02
100%
Vihtavuori N160
<<locked>>
97%
53693
74%
**01
98%
Vihtavuori N530
<<locked>>
89%
64672
89%
**65
100%
Vihtavuori N540
<<locked>>
95%
65006
90%
**35
100%
Vihtavuori N550
<<locked>>
97%
54186
75%
**60
98%
[Vihtavuori N555]*
<<locked>>
97%
36724
51%
**28
94%
Winchester 6.5 StaBALL
<<locked>>
97%
52054
72%
**45
99%
Winchester 748
<<locked>>
88%
65253
90%
**88
100%
Winchester 760
<<locked>>
97%
57914
80%
**28
96%
Winchester StaBALL Match
<<locked>>
86%
64585
89%
**68
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
58740
81%
**02
100%
ADI AR 2206H
<<locked>>
81%
44933
62%
**23
97%
ADI AR 2208
<<locked>>
81%
38000
52%
**33
95%
ADI AR 2219
<<locked>>
81%
58813
81%
**53
100%
Accurate 2015
<<locked>>
81%
50691
70%
**53
100%
Accurate 2200
<<locked>>
81%
46905
65%
**27
96%
Accurate 2230
<<locked>>
81%
54157
75%
**51
99%
Accurate 2460
<<locked>>
81%
54172
75%
**64
100%
Accurate 2495
<<locked>>
81%
46195
64%
**36
100%
Accurate 2520
<<locked>>
81%
46920
65%
**63
100%
[Accurate 2700]*
<<locked>>
84%
40857
56%
**33
90%
Accurate 4064
<<locked>>
81%
38885
54%
**95
99%
[Accurate 4350]*
<<locked>>
84%
31053
43%
**18
90%
Alliant AR-Comp
<<locked>>
81%
46876
65%
**43
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
37492
52%
**63
96%
Alliant Reloder-10x
<<locked>>
81%
54679
75%
**35
100%
Alliant Reloder-15
<<locked>>
81%
40611
56%
**41
96%
[Alliant Reloder-16]*
<<locked>>
84%
31778
44%
**41
90%
[Alliant Reloder-17]*
<<locked>>
81%
32648
45%
**04
93%
[Alliant Reloder-23]*
<<locked>>
92%
29153
40%
**59
90%
[Alliant Reloder-26]*
<<locked>>
94%
34795
48%
**92
90%
Baschieri & Pellagri 106
<<locked>>
81%
56971
79%
**99
100%
Baschieri & Pellagri 107
<<locked>>
81%
44411
61%
**23
96%
Bofors RP3
<<locked>>
81%
37260
51%
**59
96%
[Bofors RP7]*
<<locked>>
86%
40059
55%
**66
90%
Hodgdon BL-C2
<<locked>>
81%
46441
64%
**73
99%
Hodgdon Benchmark
<<locked>>
81%
48805
67%
**43
99%
[Hodgdon CFE223]*
<<locked>>
81%
38885
54%
**31
94%
Hodgdon H322
<<locked>>
81%
49647
68%
**02
100%
Hodgdon H335
<<locked>>
81%
58175
80%
**46
100%
[Hodgdon H380]*
<<locked>>
81%
38421
53%
**66
93%
[Hodgdon H414]*
<<locked>>
85%
38508
53%
**09
90%
Hodgdon H4198
<<locked>>
81%
58827
81%
**64
100%
[Hodgdon H4350]*
<<locked>>
93%
41031
57%
**05
90%
[Hodgdon Hybrid 100V]*
<<locked>>
82%
27514
38%
**74
90%
[Hodgdon LVR]*
<<locked>>
83%
33460
46%
**67
90%
[Hodgdon Superperformance]*
<<locked>>
90%
41742
58%
**94
90%
[Hodgdon VARGET]*
<<locked>>
81%
37623
52%
**27
94%
Hodgdon TrailBoss
<<locked>>
81%
26556
37%
**86
100%
IMR 3031
<<locked>>
81%
40712
56%
**64
100%
IMR 4064
<<locked>>
81%
37246
51%
**13
95%
[IMR 4166 Enduron]*
<<locked>>
81%
37971
52%
**94
90%
IMR 4198
<<locked>>
81%
54520
75%
**89
100%
[IMR 4350]*
<<locked>>
90%
40350
56%
**92
90%
[IMR 4451 Enduron]*
<<locked>>
84%
39015
54%
**43
90%
[IMR 4831]*
<<locked>>
87%
30443
42%
**79
90%
IMR 4895
<<locked>>
81%
41524
57%
**84
97%
IMR 8208 XBR
<<locked>>
81%
47050
65%
**50
99%
Lovex D073.4
<<locked>>
81%
55724
77%
**74
100%
Lovex D073.5
<<locked>>
81%
53650
74%
**45
100%
Lovex D073.6
<<locked>>
81%
43845
60%
**04
99%
Lovex S060
<<locked>>
81%
44947
62%
**54
98%
Lovex S062
<<locked>>
81%
39842
55%
**92
98%
[Lovex S065]*
<<locked>>
82%
33837
47%
**18
90%
[Lovex S070]*
<<locked>>
87%
37608
52%
**33
90%
Norma 201
<<locked>>
81%
44077
61%
**84
98%
Norma 202
<<locked>>
81%
44005
61%
**81
100%
Norma 203B
<<locked>>
81%
39987
55%
**28
96%
[Norma 204]*
<<locked>>
94%
45992
63%
**50
90%
[Norma URP]*
<<locked>>
84%
31589
44%
**31
90%
Ramshot Big Game
<<locked>>
81%
39407
54%
**25
96%
[Ramshot Hunter]*
<<locked>>
88%
36042
50%
**49
90%
Ramshot TAC
<<locked>>
81%
46963
65%
**36
95%
Ramshot Wild Boar
<<locked>>
81%
46514
64%
**66
98%
Ramshot X-Terminator
<<locked>>
81%
51039
70%
**96
99%
ReloadSwiss RS 14
<<locked>>
81%
26774
37%
**29
100%
ReloadSwiss RS 40
<<locked>>
81%
52924
73%
**51
100%
[ReloadSwiss RS 50]*
<<locked>>
81%
38580
53%
**46
91%
ReloadSwiss RS 52
<<locked>>
81%
42467
59%
**56
96%
ReloadSwiss RS 60
<<locked>>
81%
34751
48%
**86
97%
[ReloadSwiss RS 62]*
<<locked>>
84%
31937
44%
**64
90%
[ReloadSwiss RS 70]*
<<locked>>
87%
35534
49%
**43
90%
Rottweil R 901
<<locked>>
81%
47979
66%
**46
100%
Rottweil R 902
<<locked>>
81%
41771
58%
**15
98%
Rottweil R 903
<<locked>>
81%
34896
48%
**97
95%
[Rottweil R 907]*
<<locked>>
86%
40059
55%
**66
90%
SNPE Vectan BA6 1/2
<<locked>>
81%
59669
82%
**82
100%
SNPE Vectan SP 10
<<locked>>
81%
59190
82%
**60
100%
[SNPE Vectan SP 11]*
<<locked>>
81%
36027
50%
**49
94%
SNPE Vectan SP 7
<<locked>>
81%
45440
63%
**00
96%
SNPE Vectan SP 9
<<locked>>
81%
43453
60%
**77
97%
SNPE Vectan Tubal 3000
<<locked>>
81%
45107
62%
**35
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
37391
52%
**67
99%
[SNPE Vectan Tubal 7000]*
<<locked>>
86%
37710
52%
**77
90%
[Shooters World Long Rifle]*
<<locked>>
82%
33837
47%
**18
90%
Shooters World Match Rifle
<<locked>>
81%
43845
60%
**04
99%
Shooters World Precision
<<locked>>
81%
39842
55%
**92
98%
Shooters World Tactical Rifle
<<locked>>
81%
55854
77%
**68
100%
Somchem S321
<<locked>>
81%
51169
71%
**35
100%
Somchem S335
<<locked>>
81%
45121
62%
**45
100%
Somchem S341
<<locked>>
81%
45165
62%
**00
97%
Somchem S355
<<locked>>
81%
36071
50%
**13
95%
[Somchem S365]*
<<locked>>
81%
26049
36%
**71
91%
Vihtavuori N120
<<locked>>
81%
58276
80%
**69
100%
Vihtavuori N130
<<locked>>
81%
50111
69%
**07
100%
Vihtavuori N133
<<locked>>
81%
42641
59%
**79
100%
Vihtavuori N135
<<locked>>
81%
34751
48%
**58
100%
Vihtavuori N140
<<locked>>
81%
41046
57%
**05
100%
Vihtavuori N150
<<locked>>
81%
30676
42%
**36
95%
[Vihtavuori N160]*
<<locked>>
81%
31676
44%
**95
90%
Vihtavuori N530
<<locked>>
81%
49327
68%
**05
99%
Vihtavuori N540
<<locked>>
81%
41089
57%
**25
99%
[Vihtavuori N550]*
<<locked>>
81%
32198
44%
**44
91%
[Vihtavuori N555]*
<<locked>>
90%
29399
41%
**05
90%
[Winchester 6.5 StaBALL]*
<<locked>>
81%
30603
42%
**30
93%
Winchester 748
<<locked>>
81%
50778
70%
**61
100%
[Winchester 760]*
<<locked>>
85%
38508
53%
**09
90%
Winchester StaBALL Match
<<locked>>
81%
53693
74%
**04
99%

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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