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Load data for .280 Ackley Improved + .284 | 170gr | CutEdge MTH

Recommended Powder(s): Alliant Reloder-26, Hodgdon Superperformance, IMR 4350, Ramshot Hunter, ReloadSwiss RS 70

.280 Ackley Improved + .284 | 170gr | CutEdge MTH

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.284 | 170gr | CutEdge MTH
Manufacturer SKU:
MTH J02
Bullet Weight:
170gr | 11.0g
Bullet Diameter:
0.284" | 7.21mm
Bullet Length:
1.540" | 39.1mm
Caliber:
.280 Ackley Improved load data
Case Length (l3):
2.540" | 64.5mm
Cartridge Length (C.O.L.):
3.280" | 83.3mm
Seated Depth:
0.800" | 20.3mm
Shank Seated Depth:
0.586" | 14.9mm
Case Capacity:
74.0 Grains of Water | 4.80 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
64977 psi | 4480 bar
LID:
LID_B8465_C285
Last updated:
2025-01-01
Recommended Twist Rate:
1:9 - 1:7

Load data for 168 loads in caliber .280 Ackley Improved with .284 | 170gr | CutEdge MTH bullet and 84 powders such as Alliant Reloder-26, Hodgdon Superperformance, IMR 4350, Ramshot Hunter, 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".

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  • 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 AR 2208
<<locked>>
88%
58363
90%
**84
100%
ADI AR 2209
<<locked>>
97%
54824
84%
**40
99%
ADI AR 2213
<<locked>>
97%
49385
76%
**74
96%
[ADI AR 2225]*
<<locked>>
97%
31212
48%
**33
93%
Accurate 2700
<<locked>>
88%
57914
89%
**48
99%
Accurate 3100
<<locked>>
97%
47616
73%
**92
99%
Accurate 4064
<<locked>>
86%
57667
89%
**41
100%
Accurate 4350
<<locked>>
93%
57580
89%
**43
100%
[Accurate MAGPRO]*
<<locked>>
97%
47007
72%
**64
94%
Alliant Reloder- TS 15.5
<<locked>>
87%
58030
89%
**94
100%
Alliant Reloder-15
<<locked>>
85%
57856
89%
**03
100%
Alliant Reloder-16
<<locked>>
94%
57421
88%
**79
100%
Alliant Reloder-17
<<locked>>
90%
58073
89%
**92
100%
Alliant Reloder-19
<<locked>>
97%
54070
83%
**20
99%
Alliant Reloder-22
<<locked>>
97%
48225
74%
**77
98%
Alliant Reloder-23
<<locked>>
97%
45049
69%
**12
100%
Alliant Reloder-25
<<locked>>
97%
39349
61%
**33
99%
Alliant Reloder-26 👍
<<locked>>
97%
50952
78%
**82
100%
Hodgdon CFE223
<<locked>>
85%
58175
90%
**49
100%
Hodgdon H380
<<locked>>
86%
58363
90%
**13
100%
Hodgdon H414
<<locked>>
89%
58189
90%
**69
100%
Hodgdon H4350
<<locked>>
96%
58015
89%
**13
99%
Hodgdon H4831
<<locked>>
97%
45295
70%
**52
95%
Hodgdon H4831 SC
<<locked>>
97%
51837
80%
**61
96%
Hodgdon Hybrid 100V
<<locked>>
97%
58175
90%
**13
100%
Hodgdon LVR
<<locked>>
91%
57812
89%
**46
100%
[Hodgdon Retumbo]*
<<locked>>
97%
31212
48%
**33
93%
Hodgdon Superperformance 👍
<<locked>>
91%
57595
89%
**95
100%
Hodgdon VARGET
<<locked>>
88%
57972
89%
**80
100%
IMR 3031
<<locked>>
84%
58059
89%
**48
100%
IMR 4064
<<locked>>
88%
57435
88%
**67
100%
IMR 4166 Enduron
<<locked>>
89%
58044
89%
**74
100%
IMR 4350 👍
<<locked>>
95%
58378
90%
**23
100%
IMR 4451 Enduron
<<locked>>
90%
57566
89%
**94
100%
IMR 4831
<<locked>>
97%
54868
84%
**94
100%
IMR 4895
<<locked>>
84%
58334
90%
**23
100%
IMR 4955 Enduron
<<locked>>
97%
50676
78%
**12
96%
IMR 7828 SSC
<<locked>>
97%
50285
77%
**07
97%
Lovex S062
<<locked>>
85%
57667
89%
**54
100%
Lovex S065
<<locked>>
92%
58363
90%
**00
100%
Lovex S070
<<locked>>
93%
57812
89%
**13
100%
Lovex S071
<<locked>>
97%
39479
61%
**48
98%
Norma 203B
<<locked>>
85%
58117
89%
**10
100%
Norma 204
<<locked>>
94%
57841
89%
**59
99%
Norma MRP
<<locked>>
97%
50299
77%
**46
99%
Norma URP
<<locked>>
94%
57696
89%
**49
100%
Ramshot Big Game
<<locked>>
85%
57841
89%
**20
100%
Ramshot Hunter 👍
<<locked>>
94%
57464
88%
**69
100%
Ramshot Magnum
<<locked>>
97%
46543
72%
**28
98%
ReloadSwiss RS 50
<<locked>>
86%
57812
89%
**94
100%
ReloadSwiss RS 52
<<locked>>
85%
58349
90%
**20
100%
ReloadSwiss RS 60
<<locked>>
91%
58146
89%
**15
100%
ReloadSwiss RS 62
<<locked>>
93%
58378
90%
**79
100%
ReloadSwiss RS 70 👍
<<locked>>
94%
58088
89%
**22
100%
ReloadSwiss RS 76
<<locked>>
97%
37710
58%
**36
96%
Rottweil R 902
<<locked>>
85%
58407
90%
**48
100%
Rottweil R 903
<<locked>>
88%
57464
88%
**84
100%
Rottweil R 904
<<locked>>
97%
57029
88%
**13
98%
Rottweil R 905
<<locked>>
97%
53490
82%
**13
99%
Rottweil R 907
<<locked>>
91%
58334
90%
**03
100%
SNPE Vectan SP 11
<<locked>>
87%
57725
89%
**20
100%
SNPE Vectan SP 9
<<locked>>
83%
58407
90%
**90
100%
SNPE Vectan Tubal 5000
<<locked>>
88%
58044
89%
**66
100%
SNPE Vectan Tubal 7000
<<locked>>
92%
57682
89%
**51
100%
Shooters World Long Rifle
<<locked>>
92%
58363
90%
**00
100%
Shooters World Precision
<<locked>>
85%
57667
89%
**54
100%
Somchem S355
<<locked>>
88%
57508
88%
**77
100%
Somchem S361
<<locked>>
96%
57725
89%
**97
97%
Somchem S365
<<locked>>
96%
58117
89%
**62
100%
Somchem S385
<<locked>>
97%
54230
83%
**94
99%
Vihtavuori N133
<<locked>>
84%
57464
88%
**39
100%
Vihtavuori N135
<<locked>>
90%
58349
90%
**02
100%
Vihtavuori N140
<<locked>>
84%
57435
88%
**08
100%
Vihtavuori N150
<<locked>>
94%
57914
89%
**44
100%
Vihtavuori N160
<<locked>>
91%
57725
89%
**10
100%
Vihtavuori N165
<<locked>>
97%
45107
69%
**36
97%
Vihtavuori N540
<<locked>>
85%
57870
89%
**41
100%
Vihtavuori N550
<<locked>>
91%
58291
90%
**53
100%
Vihtavuori N555
<<locked>>
97%
50995
78%
**90
100%
Vihtavuori N560
<<locked>>
96%
47732
73%
**84
96%
[Vihtavuori N565]*
<<locked>>
97%
40277
62%
**33
94%
Winchester 6.5 StaBALL
<<locked>>
93%
57972
89%
**87
100%
Winchester 760
<<locked>>
89%
58189
90%
**69
100%
Winchester StaBALL HD
<<locked>>
97%
39610
61%
**61
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2208
<<locked>>
81%
47413
73%
**30
100%
[ADI AR 2209]*
<<locked>>
81%
32401
50%
**97
92%
[ADI AR 2213]*
<<locked>>
86%
33823
52%
**49
90%
[ADI AR 2225]*
<<locked>>
93%
28195
43%
**34
90%
Accurate 2700
<<locked>>
81%
45643
70%
**61
98%
[Accurate 3100]*
<<locked>>
81%
27470
42%
**69
93%
Accurate 4064
<<locked>>
81%
50038
77%
**49
100%
Accurate 4350
<<locked>>
81%
38000
58%
**31
99%
[Accurate MAGPRO]*
<<locked>>
90%
37072
57%
**64
90%
Alliant Reloder- TS 15.5
<<locked>>
81%
47805
74%
**49
100%
Alliant Reloder-15
<<locked>>
81%
51227
79%
**15
100%
Alliant Reloder-16
<<locked>>
81%
37217
57%
**38
99%
Alliant Reloder-17
<<locked>>
81%
42525
65%
**62
100%
[Alliant Reloder-19]*
<<locked>>
81%
32329
50%
**97
92%
[Alliant Reloder-22]*
<<locked>>
82%
29109
45%
**51
90%
Alliant Reloder-23
<<locked>>
81%
27151
42%
**11
97%
[Alliant Reloder-25]*
<<locked>>
82%
24526
38%
**26
91%
Alliant Reloder-26
<<locked>>
81%
28616
44%
**06
95%
Hodgdon CFE223
<<locked>>
81%
50488
78%
**38
100%
Hodgdon H380
<<locked>>
81%
48834
75%
**79
100%
Hodgdon H414
<<locked>>
81%
43758
67%
**43
98%
Hodgdon H4350
<<locked>>
81%
36172
56%
**43
95%
[Hodgdon H4831]*
<<locked>>
88%
34548
53%
**29
90%
[Hodgdon H4831 SC]*
<<locked>>
85%
34272
53%
**23
90%
Hodgdon Hybrid 100V
<<locked>>
81%
34606
53%
**33
99%
Hodgdon LVR
<<locked>>
81%
41060
63%
**80
99%
[Hodgdon Retumbo]*
<<locked>>
93%
28195
43%
**34
90%
Hodgdon Superperformance
<<locked>>
81%
39479
61%
**90
97%
Hodgdon VARGET
<<locked>>
81%
47050
72%
**23
100%
IMR 3031
<<locked>>
81%
52837
81%
**89
100%
IMR 4064
<<locked>>
81%
46557
72%
**03
100%
IMR 4166 Enduron
<<locked>>
81%
45643
70%
**77
98%
IMR 4350
<<locked>>
81%
37855
58%
**75
96%
IMR 4451 Enduron
<<locked>>
81%
43801
67%
**67
98%
IMR 4831
<<locked>>
81%
33054
51%
**06
98%
IMR 4895
<<locked>>
81%
52620
81%
**38
100%
[IMR 4955 Enduron]*
<<locked>>
83%
33286
51%
**64
90%
[IMR 7828 SSC]*
<<locked>>
85%
33736
52%
**62
90%
Lovex S062
<<locked>>
81%
50140
77%
**52
100%
Lovex S065
<<locked>>
81%
41394
64%
**31
99%
Lovex S070
<<locked>>
81%
39436
61%
**11
97%
[Lovex S071]*
<<locked>>
81%
23525
36%
**57
91%
Norma 203B
<<locked>>
81%
50473
78%
**02
100%
[Norma 204]*
<<locked>>
81%
37492
58%
**02
94%
[Norma MRP]*
<<locked>>
81%
29138
45%
**80
92%
Norma URP
<<locked>>
81%
38058
59%
**28
99%
Ramshot Big Game
<<locked>>
81%
51256
79%
**31
100%
Ramshot Hunter
<<locked>>
81%
36912
57%
**18
97%
[Ramshot Magnum]*
<<locked>>
84%
28776
44%
**38
90%
ReloadSwiss RS 50
<<locked>>
81%
48718
75%
**62
99%
ReloadSwiss RS 52
<<locked>>
81%
50705
78%
**18
100%
ReloadSwiss RS 60
<<locked>>
81%
41104
63%
**52
100%
ReloadSwiss RS 62
<<locked>>
81%
37782
58%
**41
99%
ReloadSwiss RS 70
<<locked>>
81%
36999
57%
**57
98%
[ReloadSwiss RS 76]*
<<locked>>
89%
28471
44%
**77
90%
Rottweil R 902
<<locked>>
81%
51851
80%
**66
100%
Rottweil R 903
<<locked>>
81%
45455
70%
**13
100%
[Rottweil R 904]*
<<locked>>
81%
34011
52%
**93
91%
[Rottweil R 905]*
<<locked>>
81%
31285
48%
**77
92%
Rottweil R 907
<<locked>>
81%
42612
66%
**51
97%
SNPE Vectan SP 11
<<locked>>
81%
46789
72%
**62
100%
SNPE Vectan SP 9
<<locked>>
81%
54476
84%
**41
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
46920
72%
**18
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
40437
62%
**75
97%
Shooters World Long Rifle
<<locked>>
81%
41394
64%
**31
99%
Shooters World Precision
<<locked>>
81%
50140
77%
**52
100%
Somchem S355
<<locked>>
81%
45818
71%
**10
100%
[Somchem S361]*
<<locked>>
81%
34432
53%
**80
90%
Somchem S365
<<locked>>
81%
34098
52%
**82
100%
[Somchem S385]*
<<locked>>
81%
31705
49%
**70
93%
Vihtavuori N133
<<locked>>
81%
52634
81%
**84
100%
Vihtavuori N135
<<locked>>
81%
44396
68%
**18
100%
Vihtavuori N140
<<locked>>
81%
51750
80%
**33
100%
Vihtavuori N150
<<locked>>
81%
38957
60%
**62
100%
Vihtavuori N160
<<locked>>
81%
41060
63%
**54
99%
[Vihtavuori N165]*
<<locked>>
82%
27717
43%
**56
90%
Vihtavuori N540
<<locked>>
81%
51256
79%
**52
100%
Vihtavuori N550
<<locked>>
81%
41756
64%
**00
99%
Vihtavuori N555
<<locked>>
81%
29689
46%
**77
97%
[Vihtavuori N560]*
<<locked>>
86%
34055
52%
**85
90%
[Vihtavuori N565]*
<<locked>>
91%
32764
50%
**62
90%
Winchester 6.5 StaBALL
<<locked>>
81%
38624
59%
**95
100%
Winchester 760
<<locked>>
81%
43758
67%
**43
98%
Winchester StaBALL HD
<<locked>>
81%
23728
37%
**72
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.

<<locked>>... you need to buy an access license to unlock the data

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