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Load data for .300 Norma Mag + .308 | 180gr | Hornady GMX

Recommended Powder(s):

.300 Norma Mag + .308 | 180gr | Hornady GMX

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.308 | 180gr | Hornady GMX
Manufacturer SKU:
30193
Bullet Weight:
180gr | 11.7g
Bullet Diameter:
0.308" | 7.82mm
Bullet Length:
1.503" | 38.2mm
Caliber:
.300 Norma Mag load data
Case Length (l3):
2.490" | 63.2mm
Cartridge Length (C.O.L.):
3.625" | 92.1mm
Seated Depth:
0.368" | 9.4mm
Shank Seated Depth:
0.208" | 5.3mm
Case Capacity:
104.0 Grains of Water | 6.75 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B2701_C365
Last updated:
2025-01-01
Recommended Twist Rate:
1:11 - 1:9

Load data for 124 loads in caliber .300 Norma Mag with .308 | 180gr | Hornady GMX bullet and 62 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".

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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 2209 👍
<<locked>>
90%
56869
89%
**09
99%
ADI AR 2213
<<locked>>
94%
57232
90%
**54
99%
ADI AR 2217
<<locked>>
97%
46891
73%
**58
97%
ADI AR 2225
<<locked>>
97%
41901
66%
**18
99%
Accurate 3100
<<locked>>
93%
57305
90%
**46
100%
Accurate 4350
<<locked>>
85%
57130
90%
**59
100%
Accurate MAGPRO
<<locked>>
94%
57392
90%
**64
98%
Alliant Reloder-16
<<locked>>
86%
56913
89%
**02
100%
Alliant Reloder-19
<<locked>>
91%
57174
90%
**02
99%
Alliant Reloder-22 👍
<<locked>>
94%
57334
90%
**41
100%
Alliant Reloder-23
<<locked>>
95%
56739
89%
**82
100%
Alliant Reloder-25
<<locked>>
97%
53040
83%
**95
100%
Alliant Reloder-26
<<locked>>
90%
56637
89%
**68
100%
Hodgdon H1000
<<locked>>
97%
46891
73%
**58
97%
Hodgdon H4350
<<locked>>
88%
56942
89%
**43
100%
Hodgdon H4831
<<locked>>
96%
56840
89%
**82
98%
Hodgdon H4831 SC
<<locked>>
92%
57014
89%
**82
98%
Hodgdon Hybrid 100V
<<locked>>
88%
56855
89%
**23
100%
Hodgdon LVR
<<locked>>
84%
57348
90%
**72
100%
Hodgdon Retumbo
<<locked>>
97%
41901
66%
**18
99%
Hodgdon Superperformance
<<locked>>
84%
57348
90%
**28
100%
Hodgdon TrailBoss
<<locked>>
96%
35505
56%
**34
100%
IMR 4350
<<locked>>
87%
57261
90%
**43
100%
IMR 4451 Enduron
<<locked>>
83%
57377
90%
**33
100%
IMR 4831
<<locked>>
90%
57348
90%
**46
100%
IMR 4955 Enduron
<<locked>>
93%
57392
90%
**56
98%
IMR 7828 SSC
<<locked>>
93%
57435
90%
**64
99%
[IMR 7977 Enduron]*
<<locked>>
97%
54926
86%
**71
92%
[IMR 8133 Enduron]*
<<locked>>
97%
37724
59%
**03
94%
Lovex S065
<<locked>>
84%
57058
89%
**20
100%
Lovex S070
<<locked>>
85%
56985
89%
**46
100%
Lovex S071
<<locked>>
97%
54056
85%
**00
100%
Norma 204
<<locked>>
86%
57319
90%
**95
99%
Norma 217
<<locked>>
97%
38145
60%
**46
97%
Norma MRP 👍
<<locked>>
92%
57116
89%
**61
100%
Norma URP
<<locked>>
86%
57174
90%
**66
100%
Ramshot Hunter
<<locked>>
86%
57130
90%
**89
100%
Ramshot Magnum 👍
<<locked>>
94%
57377
90%
**28
100%
ReloadSwiss RS 14
<<locked>>
96%
36201
57%
**77
100%
ReloadSwiss RS 62
<<locked>>
85%
57348
90%
**89
100%
ReloadSwiss RS 70
<<locked>>
86%
57334
90%
**38
100%
ReloadSwiss RS 76
<<locked>>
97%
52431
82%
**61
100%
ReloadSwiss RS 80
<<locked>>
97%
47703
75%
**36
96%
Rottweil R 904
<<locked>>
90%
56826
89%
**63
99%
Rottweil R 905 👍
<<locked>>
91%
57363
90%
**05
100%
Rottweil R 907
<<locked>>
84%
57377
90%
**40
100%
SNPE Vectan Tubal 7000
<<locked>>
85%
57014
89%
**84
100%
Shooters World Long Rifle
<<locked>>
84%
57058
89%
**20
100%
Somchem S361
<<locked>>
89%
57072
89%
**30
98%
Somchem S365
<<locked>>
87%
56710
89%
**53
100%
Somchem S385
<<locked>>
91%
56898
89%
**59
100%
Vihtavuori N150
<<locked>>
86%
57334
90%
**64
100%
Vihtavuori N160
<<locked>>
84%
57276
90%
**33
100%
Vihtavuori N165
<<locked>>
96%
56927
89%
**46
100%
Vihtavuori N550
<<locked>>
83%
57348
90%
**79
100%
Vihtavuori N555
<<locked>>
91%
56927
89%
**86
100%
Vihtavuori N560
<<locked>>
93%
57421
90%
**74
99%
Vihtavuori N565
<<locked>>
97%
55912
88%
**28
99%
Vihtavuori N568
<<locked>>
97%
48588
76%
**36
96%
[Vihtavuori N570]*
<<locked>>
97%
46630
73%
**20
93%
Winchester 6.5 StaBALL
<<locked>>
85%
57232
90%
**00
100%
Winchester StaBALL HD
<<locked>>
96%
57029
89%
**07
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2209
<<locked>>
81%
41698
65%
**26
97%
[ADI AR 2213]*
<<locked>>
81%
37376
59%
**54
94%
[ADI AR 2217]*
<<locked>>
85%
31430
49%
**74
90%
[ADI AR 2225]*
<<locked>>
82%
26281
41%
**59
90%
Accurate 3100
<<locked>>
81%
37782
59%
**98
98%
Accurate 4350
<<locked>>
81%
50430
79%
**61
100%
[Accurate MAGPRO]*
<<locked>>
81%
36361
57%
**35
91%
Alliant Reloder-16
<<locked>>
81%
47892
75%
**61
100%
Alliant Reloder-19
<<locked>>
81%
41814
66%
**20
97%
Alliant Reloder-22
<<locked>>
81%
37521
59%
**57
95%
Alliant Reloder-23
<<locked>>
81%
35940
56%
**15
100%
Alliant Reloder-25
<<locked>>
81%
31328
49%
**26
97%
Alliant Reloder-26
<<locked>>
81%
39987
63%
**69
100%
[Hodgdon H1000]*
<<locked>>
85%
31430
49%
**74
90%
Hodgdon H4350
<<locked>>
81%
45324
71%
**36
98%
[Hodgdon H4831]*
<<locked>>
81%
35070
55%
**43
92%
[Hodgdon H4831 SC]*
<<locked>>
81%
39088
61%
**44
94%
Hodgdon Hybrid 100V
<<locked>>
81%
45237
71%
**40
100%
Hodgdon LVR
<<locked>>
81%
52446
82%
**90
100%
[Hodgdon Retumbo]*
<<locked>>
82%
26281
41%
**59
90%
Hodgdon Superperformance
<<locked>>
81%
51866
81%
**36
100%
Hodgdon TrailBoss
<<locked>>
81%
28427
45%
**80
100%
IMR 4350
<<locked>>
81%
47587
75%
**85
99%
IMR 4451 Enduron
<<locked>>
81%
53824
84%
**81
100%
IMR 4831
<<locked>>
81%
43207
68%
**13
100%
[IMR 4955 Enduron]*
<<locked>>
81%
39160
61%
**08
94%
[IMR 7828 SSC]*
<<locked>>
81%
38072
60%
**74
94%
[IMR 7977 Enduron]*
<<locked>>
94%
49734
78%
**76
90%
[IMR 8133 Enduron]*
<<locked>>
90%
30429
48%
**10
90%
Lovex S065
<<locked>>
81%
51155
80%
**22
100%
Lovex S070
<<locked>>
81%
49414
77%
**18
100%
Lovex S071
<<locked>>
81%
32401
51%
**70
96%
Norma 204
<<locked>>
81%
47950
75%
**25
98%
[Norma 217]*
<<locked>>
86%
26731
42%
**08
90%
Norma MRP
<<locked>>
81%
39262
62%
**30
97%
Norma URP
<<locked>>
81%
48776
76%
**38
100%
Ramshot Hunter
<<locked>>
81%
47776
75%
**35
100%
Ramshot Magnum
<<locked>>
81%
34853
55%
**89
95%
ReloadSwiss RS 14
<<locked>>
81%
29095
46%
**22
100%
ReloadSwiss RS 62
<<locked>>
81%
50111
79%
**74
100%
ReloadSwiss RS 70
<<locked>>
81%
48196
76%
**94
100%
[ReloadSwiss RS 76]*
<<locked>>
81%
29631
46%
**03
93%
[ReloadSwiss RS 80]*
<<locked>>
88%
33881
53%
**12
90%
Rottweil R 904
<<locked>>
81%
42989
67%
**07
96%
Rottweil R 905
<<locked>>
81%
41147
64%
**03
97%
Rottweil R 907
<<locked>>
81%
52475
82%
**54
99%
SNPE Vectan Tubal 7000
<<locked>>
81%
50227
79%
**79
100%
Shooters World Long Rifle
<<locked>>
81%
51155
80%
**22
100%
Somchem S361
<<locked>>
81%
43714
69%
**87
95%
Somchem S365
<<locked>>
81%
46050
72%
**85
100%
Somchem S385
<<locked>>
81%
41698
65%
**90
98%
Vihtavuori N150
<<locked>>
81%
48994
77%
**46
100%
Vihtavuori N160
<<locked>>
81%
52518
82%
**67
100%
Vihtavuori N165
<<locked>>
81%
35056
55%
**33
95%
Vihtavuori N550
<<locked>>
81%
53200
83%
**10
100%
Vihtavuori N555
<<locked>>
81%
40466
63%
**03
100%
[Vihtavuori N560]*
<<locked>>
81%
37608
59%
**77
93%
[Vihtavuori N565]*
<<locked>>
81%
32271
51%
**26
91%
[Vihtavuori N568]*
<<locked>>
88%
35186
55%
**35
90%
[Vihtavuori N570]*
<<locked>>
93%
41118
64%
**02
90%
Winchester 6.5 StaBALL
<<locked>>
81%
49574
78%
**82
100%
Winchester StaBALL HD
<<locked>>
81%
32155
50%
**38
100%

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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