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Load data for .338-378 Weath. Mag. + .338 | 185gr | Fox Classic Hunter

Recommended Powder(s): ADI AR 2209, Alliant Reloder-19, Alliant Reloder-26, Norma MRP, Rottweil R 905

.338-378 Weath. Mag. + .338 | 185gr | Fox Classic Hunter

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.338 | 185gr | Fox Classic Hunter
Manufacturer SKU:
8.5 mm (0.338) - 185 gr
Bullet Weight:
185gr | 12.0g
Bullet Diameter:
0.338" | 8.59mm
Bullet Length:
1.329" | 33.8mm
Caliber:
.338-378 Weath. Mag. load data
Case Length (l3):
2.910" | 73.9mm
Cartridge Length (C.O.L.):
3.694" | 93.8mm
Seated Depth:
0.545" | 13.8mm
Shank Seated Depth:
0.545" | 13.8mm
Case Capacity:
137.0 Grains of Water | 8.90 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B7121_C472
Last updated:
2025-09-18

Load data for 126 loads in caliber .338-378 Weath. Mag. with .338 | 185gr | Fox Classic Hunter bullet and 63 powders such as ADI AR 2209, Alliant Reloder-19, Alliant Reloder-26, Norma MRP, Rottweil R 905. 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>>
92%
57421
90%
**86
99%
ADI AR 2213
<<locked>>
95%
57305
90%
**28
98%
ADI AR 2217
<<locked>>
97%
44904
70%
**66
95%
ADI AR 2225
<<locked>>
97%
40263
63%
**13
97%
Accurate 3100
<<locked>>
95%
57101
89%
**17
100%
Accurate 4350
<<locked>>
86%
57014
89%
**46
100%
Accurate MAGPRO
<<locked>>
95%
57043
89%
**19
96%
Alliant Reloder-16
<<locked>>
88%
56869
89%
**86
100%
Alliant Reloder-17
<<locked>>
83%
57145
90%
**96
100%
Alliant Reloder-19 👍
<<locked>>
92%
57203
90%
**86
99%
Alliant Reloder-22
<<locked>>
95%
57348
90%
**19
99%
Alliant Reloder-23
<<locked>>
96%
57029
89%
**69
100%
Alliant Reloder-25
<<locked>>
97%
50633
79%
**30
100%
Alliant Reloder-26 👍
<<locked>>
92%
57072
89%
**58
100%
Hodgdon H1000
<<locked>>
97%
44904
70%
**66
95%
Hodgdon H4350
<<locked>>
90%
56956
89%
**27
99%
Hodgdon H4831
<<locked>>
97%
56362
88%
**50
97%
Hodgdon H4831 SC
<<locked>>
94%
57363
90%
**63
97%
Hodgdon Hybrid 100V
<<locked>>
90%
57101
89%
**07
100%
Hodgdon LVR
<<locked>>
85%
57246
90%
**53
100%
Hodgdon Retumbo
<<locked>>
97%
40263
63%
**13
97%
Hodgdon Superperformance
<<locked>>
85%
57246
90%
**96
100%
Hodgdon TrailBoss
<<locked>>
97%
35534
56%
**91
100%
IMR 4166 Enduron
<<locked>>
83%
57159
90%
**97
100%
IMR 4350
<<locked>>
88%
57290
90%
**27
99%
IMR 4451 Enduron
<<locked>>
84%
56942
89%
**17
100%
IMR 4831
<<locked>>
91%
57421
90%
**33
100%
IMR 4955 Enduron
<<locked>>
95%
57406
90%
**27
98%
IMR 7828 SSC
<<locked>>
94%
57305
90%
**38
98%
Lovex S065
<<locked>>
86%
57435
90%
**04
100%
Lovex S070
<<locked>>
87%
57232
90%
**23
100%
Lovex S071
<<locked>>
97%
51271
80%
**25
100%
Norma 204
<<locked>>
87%
56956
89%
**63
99%
Norma 217
<<locked>>
97%
36042
56%
**28
95%
Norma MRP 👍
<<locked>>
93%
57145
90%
**45
100%
Norma URP
<<locked>>
87%
57058
89%
**59
100%
Ramshot Hunter
<<locked>>
88%
57392
90%
**76
100%
Ramshot Magnum
<<locked>>
95%
57087
89%
**92
100%
ReloadSwiss RS 14
<<locked>>
97%
36201
57%
**34
100%
ReloadSwiss RS 60
<<locked>>
84%
57305
90%
**09
100%
ReloadSwiss RS 62
<<locked>>
86%
57116
90%
**63
100%
ReloadSwiss RS 70
<<locked>>
87%
57334
90%
**25
100%
ReloadSwiss RS 76
<<locked>>
97%
50285
79%
**82
100%
[ReloadSwiss RS 80]*
<<locked>>
97%
45150
71%
**35
94%
Rottweil R 904
<<locked>>
91%
57188
90%
**43
98%
Rottweil R 905 👍
<<locked>>
92%
57043
89%
**79
99%
Rottweil R 907
<<locked>>
85%
56971
89%
**07
99%
SNPE Vectan Tubal 7000
<<locked>>
86%
57290
90%
**64
100%
Shooters World Long Rifle
<<locked>>
86%
57435
90%
**04
100%
Somchem S361
<<locked>>
90%
57101
89%
**94
97%
Somchem S365
<<locked>>
89%
57290
90%
**50
100%
Somchem S385
<<locked>>
92%
57261
90%
**40
99%
Vihtavuori N135
<<locked>>
84%
57348
90%
**15
100%
Vihtavuori N150
<<locked>>
87%
57029
89%
**54
100%
Vihtavuori N160
<<locked>>
85%
57174
90%
**20
100%
Vihtavuori N165
<<locked>>
97%
56521
89%
**14
99%
Vihtavuori N550
<<locked>>
84%
56869
89%
**46
100%
Vihtavuori N555
<<locked>>
93%
57276
90%
**73
100%
Vihtavuori N560
<<locked>>
95%
57072
89%
**38
98%
Vihtavuori N565
<<locked>>
97%
53069
83%
**33
97%
[Vihtavuori N568]*
<<locked>>
97%
46514
73%
**54
94%
Winchester 6.5 StaBALL
<<locked>>
86%
57188
90%
**74
100%
Winchester StaBALL HD
<<locked>>
97%
56623
89%
**74
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2209
<<locked>>
81%
39711
62%
**44
95%
[ADI AR 2213]*
<<locked>>
81%
35520
56%
**53
91%
[ADI AR 2217]*
<<locked>>
89%
34635
54%
**03
90%
[ADI AR 2225]*
<<locked>>
87%
29167
46%
**85
90%
Accurate 3100
<<locked>>
81%
35621
56%
**97
96%
Accurate 4350
<<locked>>
81%
47790
75%
**86
100%
[Accurate MAGPRO]*
<<locked>>
84%
38928
61%
**51
90%
Alliant Reloder-16
<<locked>>
81%
45542
71%
**95
100%
Alliant Reloder-17
<<locked>>
81%
53098
83%
**33
100%
Alliant Reloder-19
<<locked>>
81%
39798
62%
**35
95%
[Alliant Reloder-22]*
<<locked>>
81%
35462
56%
**56
93%
Alliant Reloder-23
<<locked>>
81%
34185
54%
**40
99%
[Alliant Reloder-25]*
<<locked>>
81%
29704
47%
**18
94%
Alliant Reloder-26
<<locked>>
81%
37463
59%
**71
98%
[Hodgdon H1000]*
<<locked>>
89%
34635
54%
**03
90%
Hodgdon H4350
<<locked>>
81%
43424
68%
**67
97%
[Hodgdon H4831]*
<<locked>>
83%
35230
55%
**97
90%
[Hodgdon H4831 SC]*
<<locked>>
81%
37347
59%
**46
91%
Hodgdon Hybrid 100V
<<locked>>
81%
42888
67%
**71
100%
Hodgdon LVR
<<locked>>
81%
50096
78%
**38
100%
[Hodgdon Retumbo]*
<<locked>>
87%
29167
46%
**85
90%
Hodgdon Superperformance
<<locked>>
81%
49516
78%
**58
99%
Hodgdon TrailBoss
<<locked>>
81%
28137
44%
**24
100%
IMR 4166 Enduron
<<locked>>
81%
53447
84%
**38
99%
IMR 4350
<<locked>>
81%
45672
72%
**20
98%
IMR 4451 Enduron
<<locked>>
81%
51837
81%
**28
99%
IMR 4831
<<locked>>
81%
41234
65%
**44
99%
[IMR 4955 Enduron]*
<<locked>>
81%
37492
59%
**26
92%
[IMR 7828 SSC]*
<<locked>>
81%
36405
57%
**85
91%
Lovex S065
<<locked>>
81%
49255
77%
**69
99%
Lovex S070
<<locked>>
81%
47572
75%
**53
99%
[Lovex S071]*
<<locked>>
81%
30400
48%
**62
94%
Norma 204
<<locked>>
81%
45905
72%
**49
96%
[Norma 217]*
<<locked>>
91%
29312
46%
**28
90%
Norma MRP
<<locked>>
81%
37115
58%
**28
95%
Norma URP
<<locked>>
81%
46789
73%
**76
100%
Ramshot Hunter
<<locked>>
81%
45818
72%
**66
99%
[Ramshot Magnum]*
<<locked>>
81%
32967
52%
**84
93%
ReloadSwiss RS 14
<<locked>>
81%
28805
45%
**67
100%
ReloadSwiss RS 60
<<locked>>
81%
51213
80%
**23
100%
ReloadSwiss RS 62
<<locked>>
81%
47703
75%
**05
100%
ReloadSwiss RS 70
<<locked>>
81%
45890
72%
**15
100%
[ReloadSwiss RS 76]*
<<locked>>
82%
29385
46%
**25
90%
[ReloadSwiss RS 80]*
<<locked>>
92%
37521
59%
**44
90%
[Rottweil R 904]*
<<locked>>
81%
41191
65%
**18
94%
Rottweil R 905
<<locked>>
81%
39146
61%
**22
95%
Rottweil R 907
<<locked>>
81%
50401
79%
**92
99%
SNPE Vectan Tubal 7000
<<locked>>
81%
48283
76%
**10
99%
Shooters World Long Rifle
<<locked>>
81%
49255
77%
**69
99%
[Somchem S361]*
<<locked>>
81%
41901
66%
**02
93%
Somchem S365
<<locked>>
81%
43729
69%
**23
100%
Somchem S385
<<locked>>
81%
39842
62%
**08
96%
Vihtavuori N135
<<locked>>
81%
52852
83%
**46
100%
Vihtavuori N150
<<locked>>
81%
46920
74%
**94
100%
Vihtavuori N160
<<locked>>
81%
50415
79%
**02
100%
[Vihtavuori N165]*
<<locked>>
81%
33446
52%
**41
93%
Vihtavuori N550
<<locked>>
81%
50821
80%
**45
100%
Vihtavuori N555
<<locked>>
81%
38232
60%
**08
99%
[Vihtavuori N560]*
<<locked>>
81%
35592
56%
**69
90%
[Vihtavuori N565]*
<<locked>>
84%
34461
54%
**23
90%
[Vihtavuori N568]*
<<locked>>
92%
38493
60%
**58
90%
Winchester 6.5 StaBALL
<<locked>>
81%
47558
75%
**27
100%
Winchester StaBALL HD
<<locked>>
81%
29834
47%
**26
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.

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

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