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Load data for .270 Win. Ackley Improved + .277 | 150gr | Speer Grand Slam

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

.270 Win. Ackley Improved + .277 | 150gr | Speer Grand Slam

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.277 | 150gr | Speer Grand Slam
Manufacturer SKU:
1608
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_B6112_C272
Last updated:
2026-02-02

Load data for 224 loads in caliber .270 Win. Ackley Improved with .277 | 150gr | Speer Grand Slam 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%
65122
90%
**31
101%
ADI AR 2206H
<<locked>>
85%
64745
89%
**07
100%
ADI AR 2208
<<locked>>
90%
65035
90%
**94
100%
ADI AR 2209
<<locked>>
97%
56913
78%
**84
99%
ADI AR 2213
<<locked>>
97%
50517
70%
**15
96%
[ADI AR 2225]*
<<locked>>
97%
32706
45%
**61
93%
Accurate 2200
<<locked>>
83%
64832
89%
**84
100%
Accurate 2700
<<locked>>
91%
64469
89%
**54
100%
Accurate 3100
<<locked>>
97%
50227
69%
**36
99%
Accurate 4064
<<locked>>
88%
64788
89%
**48
100%
Accurate 4350
<<locked>>
95%
65079
90%
**59
100%
[Accurate MAGPRO]*
<<locked>>
97%
49139
68%
**02
94%
Alliant Power Pro 2000-MR
<<locked>>
86%
65151
90%
**25
100%
Alliant Reloder- TS 15.5
<<locked>>
90%
64963
90%
**00
100%
Alliant Reloder-15
<<locked>>
87%
64832
89%
**27
100%
Alliant Reloder-16
<<locked>>
97%
64310
89%
**99
100%
Alliant Reloder-17
<<locked>>
92%
63962
88%
**89
100%
Alliant Reloder-19
<<locked>>
97%
56246
78%
**74
99%
Alliant Reloder-22
<<locked>>
97%
49617
68%
**08
98%
Alliant Reloder-23
<<locked>>
97%
47021
65%
**49
100%
Alliant Reloder-25
<<locked>>
97%
41379
57%
**84
99%
Alliant Reloder-26
<<locked>>
97%
53940
74%
**40
100%
Baschieri & Pellagri 107
<<locked>>
84%
64498
89%
**20
100%
[Baschieri & Pellagri 109]*
<<locked>>
97%
50386
69%
**23
92%
Bofors RP15
<<locked>>
97%
45977
63%
**46
97%
Bofors RP3
<<locked>>
89%
64861
89%
**04
100%
[Bofors RP30]*
<<locked>>
97%
37579
52%
**95
93%
Bofors RP5
<<locked>>
97%
49617
68%
**08
98%
Bofors RP7
<<locked>>
93%
64571
89%
**07
100%
Hodgdon Benchmark
<<locked>>
83%
64963
90%
**25
100%
Hodgdon CFE223
<<locked>>
87%
64136
88%
**49
100%
Hodgdon H380
<<locked>>
89%
64701
89%
**17
100%
Hodgdon H414 👍
<<locked>>
91%
64194
89%
**72
100%
Hodgdon H4350
<<locked>>
97%
60684
84%
**71
100%
Hodgdon H4831
<<locked>>
97%
47021
65%
**97
95%
Hodgdon H4831 SC
<<locked>>
97%
53200
73%
**95
96%
Hodgdon H4895
<<locked>>
84%
64527
89%
**00
100%
Hodgdon Hybrid 100V
<<locked>>
97%
60930
84%
**67
100%
Hodgdon LVR
<<locked>>
94%
64556
89%
**56
100%
[Hodgdon Retumbo]*
<<locked>>
97%
32706
45%
**61
93%
Hodgdon Superperformance 👍
<<locked>>
93%
64324
89%
**05
100%
Hodgdon VARGET
<<locked>>
90%
64658
89%
**90
100%
Hodgdon TrailBoss
<<locked>>
97%
35114
48%
**06
100%
IMR 3031
<<locked>>
87%
64817
89%
**61
100%
IMR 4064
<<locked>>
91%
64368
89%
**77
100%
IMR 4166 Enduron
<<locked>>
92%
64614
89%
**87
100%
IMR 4350
<<locked>>
97%
64919
90%
**23
100%
IMR 4451 Enduron
<<locked>>
93%
64905
89%
**17
100%
IMR 4831
<<locked>>
96%
56579
78%
**38
100%
IMR 4895
<<locked>>
86%
64281
89%
**17
100%
IMR 4955 Enduron
<<locked>>
97%
52156
72%
**49
96%
IMR 7828 SSC
<<locked>>
97%
52417
72%
**51
97%
IMR 8208 XBR
<<locked>>
84%
64963
90%
**67
100%
Lovex D073.6
<<locked>>
84%
64353
89%
**51
100%
Lovex S060
<<locked>>
86%
64948
90%
**48
100%
Lovex S062
<<locked>>
88%
65108
90%
**71
100%
Lovex S065
<<locked>>
94%
64614
89%
**00
100%
Lovex S070
<<locked>>
96%
65035
90%
**30
100%
Lovex S071
<<locked>>
97%
41655
57%
**85
98%
Norma 201
<<locked>>
85%
64339
89%
**58
100%
Norma 202
<<locked>>
85%
65253
90%
**48
100%
Norma 203B
<<locked>>
88%
64963
90%
**20
100%
Norma 204
<<locked>>
96%
64295
89%
**63
99%
Norma MRP
<<locked>>
97%
52707
73%
**90
99%
Norma URP
<<locked>>
96%
65238
90%
**66
100%
Ramshot Big Game
<<locked>>
87%
64759
89%
**30
100%
Ramshot Grand
<<locked>>
97%
55492
77%
**17
98%
Ramshot Hunter 👍
<<locked>>
97%
65224
90%
**89
100%
Ramshot Magnum
<<locked>>
97%
48559
67%
**76
98%
Ramshot TAC
<<locked>>
83%
65166
90%
**04
100%
ReloadSwiss RS 14
<<locked>>
97%
35665
49%
**45
100%
ReloadSwiss RS 50
<<locked>>
89%
64339
89%
**00
100%
ReloadSwiss RS 52
<<locked>>
85%
65151
90%
**82
100%
ReloadSwiss RS 60
<<locked>>
90%
64629
89%
**92
100%
ReloadSwiss RS 62
<<locked>>
95%
64905
89%
**82
100%
ReloadSwiss RS 70 👍
<<locked>>
96%
64730
89%
**31
100%
ReloadSwiss RS 76
<<locked>>
97%
39653
55%
**84
96%
Rottweil R 901
<<locked>>
83%
64571
89%
**22
100%
Rottweil R 902
<<locked>>
87%
64672
89%
**48
100%
Rottweil R 903
<<locked>>
91%
65209
90%
**04
100%
Rottweil R 904
<<locked>>
97%
58595
81%
**51
98%
Rottweil R 905
<<locked>>
97%
55434
76%
**54
99%
Rottweil R 907
<<locked>>
93%
64571
89%
**07
100%
SNPE Vectan SP 11
<<locked>>
90%
64324
89%
**27
100%
SNPE Vectan SP 7
<<locked>>
84%
65050
90%
**00
100%
SNPE Vectan SP 9
<<locked>>
86%
65079
90%
**00
100%
SNPE Vectan Tubal 3000
<<locked>>
85%
64107
88%
**66
100%
SNPE Vectan Tubal 5000
<<locked>>
90%
64382
89%
**59
100%
SNPE Vectan Tubal 7000
<<locked>>
95%
65267
90%
**71
100%
Shooters World Long Rifle
<<locked>>
94%
64614
89%
**00
100%
Shooters World Match Rifle
<<locked>>
84%
64353
89%
**51
100%
Shooters World Precision
<<locked>>
88%
65108
90%
**71
100%
Somchem S335
<<locked>>
85%
64556
89%
**76
100%
Somchem S341
<<locked>>
84%
64701
89%
**81
100%
Somchem S355
<<locked>>
91%
65137
90%
**94
100%
Somchem S361
<<locked>>
97%
60814
84%
**51
97%
Somchem S365
<<locked>>
97%
61728
85%
**30
100%
Somchem S385
<<locked>>
97%
55695
77%
**28
99%
Vihtavuori N133
<<locked>>
87%
64948
90%
**49
100%
Vihtavuori N135
<<locked>>
93%
65166
90%
**02
100%
Vihtavuori N140
<<locked>>
87%
64440
89%
**12
100%
Vihtavuori N150
<<locked>>
96%
64165
88%
**48
100%
Vihtavuori N160
<<locked>>
93%
64571
89%
**20
100%
Vihtavuori N165
<<locked>>
97%
46934
65%
**71
97%
Vihtavuori N540
<<locked>>
87%
64629
89%
**41
100%
Vihtavuori N550
<<locked>>
93%
64513
89%
**59
100%
Vihtavuori N555
<<locked>>
97%
52808
73%
**25
100%
Vihtavuori N560
<<locked>>
97%
50488
70%
**38
96%
[Vihtavuori N565]*
<<locked>>
97%
42409
58%
**77
94%
Winchester 6.5 StaBALL
<<locked>>
95%
64295
89%
**81
100%
Winchester 760 👍
<<locked>>
91%
64194
89%
**72
100%
Winchester StaBALL HD
<<locked>>
97%
41989
58%
**12
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59930
83%
**62
101%
ADI AR 2206H
<<locked>>
81%
57754
80%
**15
100%
ADI AR 2208
<<locked>>
81%
49139
68%
**71
100%
[ADI AR 2209]*
<<locked>>
81%
34011
47%
**31
92%
[ADI AR 2213]*
<<locked>>
86%
35273
49%
**80
90%
[ADI AR 2225]*
<<locked>>
93%
29660
41%
**65
90%
Accurate 2200
<<locked>>
81%
59625
82%
**18
100%
Accurate 2700
<<locked>>
81%
47079
65%
**02
98%
[Accurate 3100]*
<<locked>>
81%
29428
41%
**10
94%
Accurate 4064
<<locked>>
81%
52083
72%
**84
100%
Accurate 4350
<<locked>>
81%
40074
55%
**72
99%
[Accurate MAGPRO]*
<<locked>>
90%
39320
54%
**02
90%
Alliant Power Pro 2000-MR
<<locked>>
81%
54665
75%
**87
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
49734
69%
**94
100%
Alliant Reloder-15
<<locked>>
81%
53026
73%
**56
100%
Alliant Reloder-16
<<locked>>
81%
38870
54%
**79
99%
Alliant Reloder-17
<<locked>>
81%
44179
61%
**97
100%
[Alliant Reloder-19]*
<<locked>>
81%
33808
47%
**28
92%
[Alliant Reloder-22]*
<<locked>>
82%
30676
42%
**82
90%
Alliant Reloder-23
<<locked>>
81%
28514
39%
**36
97%
[Alliant Reloder-25]*
<<locked>>
81%
25527
35%
**41
90%
Alliant Reloder-26
<<locked>>
81%
30458
42%
**48
95%
Baschieri & Pellagri 107
<<locked>>
81%
57551
79%
**25
100%
[Baschieri & Pellagri 109]*
<<locked>>
93%
44541
61%
**08
90%
[Bofors RP15]*
<<locked>>
85%
31111
43%
**92
90%
Bofors RP3
<<locked>>
81%
50053
69%
**00
100%
[Bofors RP30]*
<<locked>>
93%
32677
45%
**70
90%
[Bofors RP5]*
<<locked>>
82%
30676
42%
**82
90%
Bofors RP7
<<locked>>
81%
44019
61%
**79
97%
Hodgdon Benchmark
<<locked>>
81%
60901
84%
**76
100%
Hodgdon CFE223
<<locked>>
81%
52576
73%
**82
100%
Hodgdon H380
<<locked>>
81%
50299
69%
**13
100%
Hodgdon H414
<<locked>>
81%
45818
63%
**84
98%
Hodgdon H4350
<<locked>>
81%
37434
52%
**67
95%
[Hodgdon H4831]*
<<locked>>
88%
35679
49%
**54
90%
[Hodgdon H4831 SC]*
<<locked>>
85%
35679
49%
**54
90%
Hodgdon H4895
<<locked>>
81%
58392
81%
**15
100%
Hodgdon Hybrid 100V
<<locked>>
81%
36434
50%
**70
99%
Hodgdon LVR
<<locked>>
81%
42786
59%
**21
99%
[Hodgdon Retumbo]*
<<locked>>
93%
29660
41%
**65
90%
Hodgdon Superperformance
<<locked>>
81%
40799
56%
**21
96%
Hodgdon VARGET
<<locked>>
81%
48675
67%
**64
100%
Hodgdon TrailBoss
<<locked>>
91%
32155
44%
**47
100%
IMR 3031
<<locked>>
81%
54621
75%
**26
100%
IMR 4064
<<locked>>
81%
48182
66%
**44
100%
IMR 4166 Enduron
<<locked>>
81%
47340
65%
**21
98%
IMR 4350
<<locked>>
81%
39305
54%
**03
96%
IMR 4451 Enduron
<<locked>>
81%
45353
63%
**05
98%
IMR 4831
<<locked>>
81%
34940
48%
**41
98%
IMR 4895
<<locked>>
81%
54462
75%
**89
100%
[IMR 4955 Enduron]*
<<locked>>
84%
35027
48%
**08
90%
[IMR 7828 SSC]*
<<locked>>
85%
35172
48%
**97
90%
IMR 8208 XBR
<<locked>>
81%
59872
83%
**05
100%
Lovex D073.6
<<locked>>
81%
58218
80%
**82
100%
Lovex S060
<<locked>>
81%
56217
78%
**30
100%
Lovex S062
<<locked>>
81%
51634
71%
**90
100%
Lovex S065
<<locked>>
81%
42801
59%
**59
98%
Lovex S070
<<locked>>
81%
40915
56%
**39
97%
[Lovex S071]*
<<locked>>
81%
25222
35%
**82
91%
Norma 201
<<locked>>
81%
56347
78%
**53
100%
Norma 202
<<locked>>
81%
57101
79%
**49
100%
Norma 203B
<<locked>>
81%
52518
72%
**46
100%
[Norma 204]*
<<locked>>
81%
38986
54%
**36
94%
[Norma MRP]*
<<locked>>
81%
30676
42%
**11
92%
Norma URP
<<locked>>
81%
39436
54%
**56
99%
Ramshot Big Game
<<locked>>
81%
52823
73%
**72
100%
[Ramshot Grand]*
<<locked>>
83%
34185
47%
**77
90%
Ramshot Hunter
<<locked>>
81%
38522
53%
**52
97%
[Ramshot Magnum]*
<<locked>>
83%
29573
41%
**46
90%
Ramshot TAC
<<locked>>
81%
59959
83%
**35
100%
ReloadSwiss RS 14
<<locked>>
86%
30574
42%
**44
100%
ReloadSwiss RS 50
<<locked>>
81%
50386
69%
**97
99%
ReloadSwiss RS 52
<<locked>>
81%
57740
80%
**81
100%
ReloadSwiss RS 60
<<locked>>
81%
46920
65%
**56
100%
ReloadSwiss RS 62
<<locked>>
81%
39914
55%
**89
99%
ReloadSwiss RS 70
<<locked>>
81%
38479
53%
**98
98%
[ReloadSwiss RS 76]*
<<locked>>
88%
29805
41%
**02
90%
Rottweil R 901
<<locked>>
81%
60539
83%
**66
100%
Rottweil R 902
<<locked>>
81%
53838
74%
**10
100%
Rottweil R 903
<<locked>>
81%
47050
65%
**51
100%
[Rottweil R 904]*
<<locked>>
81%
35244
49%
**18
91%
[Rottweil R 905]*
<<locked>>
81%
32576
45%
**02
92%
Rottweil R 907
<<locked>>
81%
44019
61%
**79
97%
SNPE Vectan SP 11
<<locked>>
81%
48385
67%
**07
100%
SNPE Vectan SP 7
<<locked>>
81%
59016
81%
**15
100%
SNPE Vectan SP 9
<<locked>>
81%
56144
77%
**85
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
57116
79%
**77
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
48254
67%
**52
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
41771
58%
**07
97%
Shooters World Long Rifle
<<locked>>
81%
42801
59%
**59
98%
Shooters World Match Rifle
<<locked>>
81%
58218
80%
**82
100%
Shooters World Precision
<<locked>>
81%
51634
71%
**90
100%
Somchem S335
<<locked>>
81%
56666
78%
**80
100%
Somchem S341
<<locked>>
81%
58581
81%
**02
100%
Somchem S355
<<locked>>
81%
47355
65%
**51
100%
[Somchem S361]*
<<locked>>
81%
35897
50%
**08
90%
Somchem S365
<<locked>>
81%
35984
50%
**20
100%
[Somchem S385]*
<<locked>>
81%
33373
46%
**02
93%
Vihtavuori N133
<<locked>>
81%
54070
75%
**21
100%
Vihtavuori N135
<<locked>>
81%
46209
64%
**56
100%
Vihtavuori N140
<<locked>>
81%
53606
74%
**74
100%
Vihtavuori N150
<<locked>>
81%
40451
56%
**93
100%
Vihtavuori N160
<<locked>>
81%
42728
59%
**92
99%
[Vihtavuori N165]*
<<locked>>
82%
28848
40%
**77
90%
Vihtavuori N540
<<locked>>
81%
53098
73%
**00
100%
Vihtavuori N550
<<locked>>
81%
43091
59%
**31
99%
Vihtavuori N555
<<locked>>
81%
31488
43%
**11
97%
[Vihtavuori N560]*
<<locked>>
87%
35766
49%
**23
90%
[Vihtavuori N565]*
<<locked>>
91%
34461
48%
**93
90%
Winchester 6.5 StaBALL
<<locked>>
81%
40074
55%
**30
100%
Winchester 760
<<locked>>
81%
45818
63%
**84
98%
Winchester StaBALL HD
<<locked>>
81%
25222
35%
**10
96%

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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