top of page

Load data for .300 Lapua Mag. + .308 | 125gr | Sierra HPMK

You need to be a member to bookmark a  load !

Bookmark this load
>> My bookmarks

Recommended Powder(s):

.300 Lapua Mag. + .308 | 125gr | Sierra HPMK

Load Specifications

Bullet:
.308 | 125gr | Sierra HPMK
Manufacturer SKU:
2121
Bullet Weight:
125gr | 8.1g
Bullet Diameter:
0.308" | 7.82mm
Bullet Length:
1.180" | 30.0mm
Caliber:
.300 Lapua Mag.
Case Length (l3):
2.724" | 69.2mm
Cartridge Length (C.O.L.):
3.625" | 92.1mm
Seated Depth:
0.279" | 7.1mm
Shank Seated Depth:
0.279" | 7.1mm
Case Capacity:
100.0 Grains of Water | 6.49 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
60916 psi | 4200 bar
LID:
LID_B5863_C363

>> Use the Personalized Load Calculator further below to adjust input parameters. 

Load data for 150 loads in caliber .300 Lapua Mag. with .308 | 125gr | Sierra HPMK bullet and 75 powder(s). 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".

    • A load must fulfill certain criteria to be listed in the default view below - see here.

    • Our load data might deviate from other sources - see the most common reasons here

    • All loads are based on the bullet and case dimensions shown under "Load Specifications" - see here what to do if you deviate.

    • You can set your specifications in the "Personalized Load Calculator".

    • Go to the bottom of the "My Account " page to set the measure system (imperial vs. metric) 

  • No data yet

  • .

    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.

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>>
87%
54781
90%
**43
100%
ADI AR 2209
<<locked>>
97%
52562
86%
**60
95%
Accurate 2700
<<locked>>
88%
54491
89%
**61
96%
Accurate 3100
<<locked>>
97%
45252
74%
**66
96%
Accurate 4064
<<locked>>
85%
54418
89%
**10
100%
Accurate 4350 👍
<<locked>>
93%
54404
89%
**89
99%
Alliant Reloder- TS 15.5
<<locked>>
87%
54549
90%
**56
100%
Alliant Reloder-15
<<locked>>
84%
54230
89%
**66
100%
Alliant Reloder-16 👍
<<locked>>
95%
54534
90%
**45
100%
Alliant Reloder-17 👍
<<locked>>
90%
54491
89%
**55
100%
Alliant Reloder-19
<<locked>>
97%
51416
84%
**30
95%
[Alliant Reloder-22]*
<<locked>>
97%
45136
74%
**41
93%
Alliant Reloder-23
<<locked>>
97%
42801
70%
**96
99%
[Alliant Reloder-25]*
<<locked>>
97%
37710
62%
**71
94%
Alliant Reloder-26
<<locked>>
97%
48602
80%
**99
98%
Hodgdon CFE223
<<locked>>
85%
54360
89%
**89
99%
Hodgdon H380
<<locked>>
86%
54259
89%
**50
99%
Hodgdon H414
<<locked>>
89%
54244
89%
**96
97%
Hodgdon H4350
<<locked>>
96%
54708
90%
**33
97%
Hodgdon Hybrid 100V
<<locked>>
96%
54549
90%
**60
100%
Hodgdon LVR 👍
<<locked>>
91%
54491
89%
**89
99%
Hodgdon Superperformance
<<locked>>
91%
54607
90%
**28
97%
Hodgdon VARGET
<<locked>>
87%
54505
89%
**30
100%
Hodgdon TrailBoss
<<locked>>
96%
34345
56%
**36
100%
IMR 3031
<<locked>>
84%
54041
89%
**30
100%
IMR 4064
<<locked>>
88%
54563
90%
**33
100%
IMR 4166 Enduron
<<locked>>
88%
54636
90%
**04
97%
IMR 4350
<<locked>>
94%
54331
89%
**37
97%
IMR 4451 Enduron
<<locked>>
89%
54215
89%
**14
97%
IMR 4831
<<locked>>
97%
52214
86%
**27
99%
IMR 4895
<<locked>>
84%
54491
89%
**69
100%
[IMR 4955 Enduron]*
<<locked>>
97%
48820
80%
**12
92%
Lovex S062
<<locked>>
85%
54505
89%
**17
100%
Lovex S065
<<locked>>
91%
54462
89%
**14
98%
Lovex S070
<<locked>>
93%
54418
89%
**40
97%
[Lovex S071]*
<<locked>>
97%
37652
62%
**86
93%
Norma 203B
<<locked>>
85%
54752
90%
**73
100%
Norma 204
<<locked>>
94%
54810
90%
**76
95%
Norma MRP
<<locked>>
97%
48225
79%
**46
96%
Norma URP
<<locked>>
93%
54215
89%
**83
99%
Ramshot Big Game
<<locked>>
85%
54592
90%
**76
100%
Ramshot Hunter
<<locked>>
94%
54143
89%
**99
98%
[Ramshot Magnum]*
<<locked>>
97%
44208
73%
**86
93%
ReloadSwiss RS 14
<<locked>>
96%
34809
57%
**82
100%
ReloadSwiss RS 50
<<locked>>
86%
54259
89%
**20
98%
ReloadSwiss RS 52
<<locked>>
85%
54099
89%
**73
100%
ReloadSwiss RS 60
<<locked>>
91%
54534
90%
**78
100%
ReloadSwiss RS 62
<<locked>>
93%
54708
90%
**09
99%
ReloadSwiss RS 70
<<locked>>
94%
54491
89%
**55
99%
Rottweil R 902
<<locked>>
84%
54128
89%
**01
100%
Rottweil R 903
<<locked>>
88%
54737
90%
**43
100%
[Rottweil R 904]*
<<locked>>
97%
53940
89%
**30
94%
Rottweil R 905
<<locked>>
97%
50227
82%
**14
95%
Rottweil R 907
<<locked>>
90%
54302
89%
**10
97%
SNPE Vectan SP 11
<<locked>>
87%
54665
90%
**83
100%
SNPE Vectan Tubal 5000
<<locked>>
87%
54491
89%
**15
100%
SNPE Vectan Tubal 7000
<<locked>>
91%
54636
90%
**61
97%
Shooters World Long Rifle
<<locked>>
91%
54462
89%
**14
98%
Shooters World Precision
<<locked>>
85%
54505
89%
**17
100%
Somchem S355
<<locked>>
88%
54462
89%
**40
100%
[Somchem S361]*
<<locked>>
96%
54302
89%
**74
93%
Somchem S365 👍
<<locked>>
96%
54723
90%
**28
100%
Somchem S385
<<locked>>
97%
51010
84%
**91
96%
Vihtavuori N133
<<locked>>
84%
54201
89%
**19
100%
Vihtavuori N135
<<locked>>
90%
54810
90%
**74
100%
Vihtavuori N140
<<locked>>
84%
54331
89%
**68
100%
Vihtavuori N150
<<locked>>
93%
54766
90%
**04
100%
Vihtavuori N160
<<locked>>
91%
54085
89%
**37
99%
[Vihtavuori N165]*
<<locked>>
97%
42801
70%
**91
93%
Vihtavuori N540
<<locked>>
84%
54708
90%
**10
100%
Vihtavuori N550
<<locked>>
91%
54346
89%
**89
99%
Vihtavuori N555
<<locked>>
97%
47688
78%
**94
99%
Winchester 6.5 StaBALL
<<locked>>
92%
54186
89%
**10
100%
Winchester 760
<<locked>>
89%
54244
89%
**96
97%
Winchester StaBALL HD
<<locked>>
97%
35737
59%
**99
99%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2208
<<locked>>
81%
45063
74%
**40
98%
[ADI AR 2209]*
<<locked>>
89%
40016
66%
**71
90%
[Accurate 2700]*
<<locked>>
81%
43323
71%
**38
93%
[Accurate 3100]*
<<locked>>
87%
31662
52%
**28
90%
Accurate 4064
<<locked>>
81%
47166
77%
**82
100%
Accurate 4350
<<locked>>
81%
35578
58%
**72
95%
Alliant Reloder- TS 15.5
<<locked>>
81%
45295
74%
**66
99%
Alliant Reloder-15
<<locked>>
81%
48515
80%
**41
99%
Alliant Reloder-16
<<locked>>
81%
35259
58%
**92
95%
Alliant Reloder-17
<<locked>>
81%
39813
65%
**33
98%
[Alliant Reloder-19]*
<<locked>>
89%
39436
65%
**58
90%
[Alliant Reloder-22]*
<<locked>>
92%
39160
64%
**81
90%
[Alliant Reloder-23]*
<<locked>>
81%
25846
42%
**80
90%
[Alliant Reloder-25]*
<<locked>>
92%
32576
53%
**04
90%
[Alliant Reloder-26]*
<<locked>>
84%
30356
50%
**81
90%
Hodgdon CFE223
<<locked>>
81%
47761
78%
**58
98%
Hodgdon H380
<<locked>>
81%
45977
75%
**86
97%
[Hodgdon H414]*
<<locked>>
81%
41278
68%
**17
93%
[Hodgdon H4350]*
<<locked>>
83%
36042
59%
**17
90%
Hodgdon Hybrid 100V
<<locked>>
81%
32677
54%
**67
95%
Hodgdon LVR
<<locked>>
81%
38522
63%
**38
95%
[Hodgdon Superperformance]*
<<locked>>
81%
37101
61%
**18
91%
Hodgdon VARGET
<<locked>>
81%
44701
73%
**40
98%
Hodgdon TrailBoss
<<locked>>
81%
27209
45%
**55
100%
IMR 3031
<<locked>>
81%
49661
82%
**58
100%
IMR 4064
<<locked>>
81%
44135
72%
**17
98%
[IMR 4166 Enduron]*
<<locked>>
81%
43555
72%
**74
94%
[IMR 4350]*
<<locked>>
81%
35868
59%
**17
90%
[IMR 4451 Enduron]*
<<locked>>
81%
41814
69%
**51
94%
[IMR 4831]*
<<locked>>
81%
31125
51%
**25
92%
IMR 4895
<<locked>>
81%
49690
82%
**84
99%
[IMR 4955 Enduron]*
<<locked>>
94%
44498
73%
**10
90%
Lovex S062
<<locked>>
81%
47485
78%
**92
100%
[Lovex S065]*
<<locked>>
81%
39001
64%
**86
94%
[Lovex S070]*
<<locked>>
81%
37304
61%
**59
92%
[Lovex S071]*
<<locked>>
92%
31662
52%
**28
90%
Norma 203B
<<locked>>
81%
47761
78%
**38
99%
[Norma 204]*
<<locked>>
84%
39784
65%
**45
90%
[Norma MRP]*
<<locked>>
88%
35766
59%
**15
90%
[Norma URP]*
<<locked>>
81%
35534
58%
**69
94%
Ramshot Big Game
<<locked>>
81%
48225
79%
**51
99%
[Ramshot Hunter]*
<<locked>>
81%
34708
57%
**43
92%
[Ramshot Magnum]*
<<locked>>
93%
38682
63%
**35
90%
ReloadSwiss RS 14
<<locked>>
81%
27644
45%
**05
100%
ReloadSwiss RS 50
<<locked>>
81%
46441
76%
**66
96%
ReloadSwiss RS 52
<<locked>>
81%
47485
78%
**48
100%
ReloadSwiss RS 60
<<locked>>
81%
38566
63%
**27
99%
[ReloadSwiss RS 62]*
<<locked>>
81%
35505
58%
**79
94%
[ReloadSwiss RS 70]*
<<locked>>
81%
34853
57%
**72
93%
Rottweil R 902
<<locked>>
81%
49371
81%
**09
100%
Rottweil R 903
<<locked>>
81%
42743
70%
**10
99%
[Rottweil R 904]*
<<locked>>
90%
42612
70%
**87
90%
[Rottweil R 905]*
<<locked>>
89%
38363
63%
**35
90%
[Rottweil R 907]*
<<locked>>
81%
40306
66%
**12
92%
SNPE Vectan SP 11
<<locked>>
81%
44019
72%
**73
98%
SNPE Vectan Tubal 5000
<<locked>>
81%
44643
73%
**41
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
81%
38377
63%
**23
93%
[Shooters World Long Rifle]*
<<locked>>
81%
39001
64%
**86
94%
Shooters World Precision
<<locked>>
81%
47485
78%
**92
100%
Somchem S355
<<locked>>
81%
43076
71%
**10
99%
[Somchem S361]*
<<locked>>
91%
45310
74%
**00
90%
Somchem S365
<<locked>>
81%
32082
53%
**07
97%
[Somchem S385]*
<<locked>>
87%
36158
59%
**40
90%
Vihtavuori N133
<<locked>>
81%
49893
82%
**43
100%
Vihtavuori N135
<<locked>>
81%
42003
69%
**45
100%
Vihtavuori N140
<<locked>>
81%
48921
80%
**82
100%
Vihtavuori N150
<<locked>>
81%
36999
61%
**40
98%
Vihtavuori N160
<<locked>>
81%
38754
64%
**22
96%
[Vihtavuori N165]*
<<locked>>
93%
37130
61%
**46
90%
Vihtavuori N540
<<locked>>
81%
48805
80%
**99
100%
Vihtavuori N550
<<locked>>
81%
39146
64%
**64
96%
[Vihtavuori N555]*
<<locked>>
81%
27630
45%
**56
91%
Winchester 6.5 StaBALL
<<locked>>
81%
36593
60%
**36
97%
[Winchester 760]*
<<locked>>
81%
41278
68%
**17
93%
[Winchester StaBALL HD]*
<<locked>>
86%
26687
44%
**59
90%

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.

bottom of page