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Load data for .338-378 Weath. Mag. + .338 | 200gr | Woodleigh FN SN

Recommended Powder(s):

.338-378 Weath. Mag. + .338 | 200gr | Woodleigh FN SN

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.338 | 200gr | Woodleigh FN SN
Manufacturer SKU:
56E
Bullet Weight:
200gr | 13.0g
Bullet Diameter:
0.338" | 8.59mm
Bullet Length:
1.035" | 26.3mm
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:
0.251" | 6.4mm
Shank Seated Depth:
0.251" | 6.4mm
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_B12102_C472
Last updated:
2026-01-19

Load data for 0 loads in caliber .338-378 Weath. Mag. with .338 | 200gr | Woodleigh FN SN bullet and 0 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".

  • 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 AR 2209
<<locked>>
88%
56898
89%
**87
99%
ADI AR 2213 👍
<<locked>>
91%
57217
90%
**30
99%
ADI AR 2217
<<locked>>
97%
50995
80%
**12
98%
ADI AR 2225
<<locked>>
97%
46195
72%
**69
100%
Accurate 3100
<<locked>>
91%
57145
90%
**31
100%
Accurate MAGPRO
<<locked>>
91%
57203
90%
**40
98%
Alliant Reloder-16
<<locked>>
84%
56913
89%
**84
100%
Alliant Reloder-19
<<locked>>
89%
57246
90%
**97
100%
Alliant Reloder-22 👍
<<locked>>
91%
57000
89%
**23
100%
Alliant Reloder-23
<<locked>>
92%
57000
89%
**68
100%
Alliant Reloder-25 👍
<<locked>>
96%
57363
90%
**30
100%
Alliant Reloder-26
<<locked>>
88%
57087
89%
**46
100%
[Alliant Reloder-33]*
<<locked>>
97%
48196
76%
**15
94%
Baschieri & Pellagri 109
<<locked>>
93%
57290
90%
**64
97%
Bofors RP15
<<locked>>
94%
57217
90%
**14
100%
Bofors RP30
<<locked>>
97%
53969
85%
**84
99%
Bofors RP5 👍
<<locked>>
91%
57000
89%
**23
100%
Hodgdon H1000
<<locked>>
97%
50995
80%
**12
98%
Hodgdon H4350
<<locked>>
87%
57290
90%
**38
100%
Hodgdon H4831
<<locked>>
94%
57305
90%
**77
98%
Hodgdon H4831 SC
<<locked>>
90%
56956
89%
**64
98%
Hodgdon Hybrid 100V
<<locked>>
86%
56869
89%
**05
100%
Hodgdon Retumbo
<<locked>>
97%
46195
72%
**69
100%
Hodgdon TrailBoss
<<locked>>
97%
35911
56%
**49
100%
IMR 4350
<<locked>>
85%
57116
90%
**31
100%
IMR 4831
<<locked>>
88%
57246
90%
**31
100%
IMR 4955 Enduron
<<locked>>
91%
57116
89%
**48
99%
IMR 7828 SSC 👍
<<locked>>
90%
57348
90%
**46
99%
[IMR 7977 Enduron]*
<<locked>>
96%
57043
89%
**86
93%
IMR 8133 Enduron
<<locked>>
97%
41989
66%
**71
96%
Lovex S070
<<locked>>
84%
56942
89%
**35
100%
Lovex S071
<<locked>>
96%
57145
90%
**31
100%
Norma 204
<<locked>>
84%
57130
90%
**68
99%
Norma 217
<<locked>>
97%
42279
66%
**97
98%
Norma MRP
<<locked>>
89%
57203
90%
**46
100%
Norma URP
<<locked>>
84%
57058
89%
**58
100%
Ramshot Grand
<<locked>>
88%
57072
89%
**36
99%
Ramshot Hunter
<<locked>>
84%
56956
89%
**71
100%
Ramshot Magnum
<<locked>>
92%
57232
90%
**97
100%
ReloadSwiss RS 14
<<locked>>
97%
36622
57%
**85
100%
ReloadSwiss RS 70
<<locked>>
83%
57130
90%
**14
100%
ReloadSwiss RS 76
<<locked>>
96%
57246
90%
**05
100%
ReloadSwiss RS 80
<<locked>>
97%
53461
84%
**04
98%
Rottweil R 904
<<locked>>
88%
57232
90%
**54
99%
Rottweil R 905
<<locked>>
89%
57174
90%
**84
100%
SNPE Vectan Tubal 7000
<<locked>>
83%
57246
90%
**79
100%
Somchem S361
<<locked>>
87%
57276
90%
**15
98%
Somchem S365
<<locked>>
85%
57072
89%
**38
100%
Somchem S385
<<locked>>
89%
57334
90%
**51
100%
Vihtavuori N150
<<locked>>
84%
57145
90%
**53
100%
Vihtavuori N165
<<locked>>
94%
57087
89%
**28
100%
[Vihtavuori N170]*
<<locked>>
97%
47776
75%
**74
92%
Vihtavuori N555
<<locked>>
89%
57276
90%
**68
100%
Vihtavuori N560
<<locked>>
91%
57174
90%
**46
99%
Vihtavuori N565
<<locked>>
95%
57392
90%
**27
99%
Vihtavuori N568
<<locked>>
97%
54273
85%
**14
97%
[Vihtavuori N570]*
<<locked>>
97%
51793
81%
**91
94%
Winchester 6.5 StaBALL
<<locked>>
83%
57392
90%
**82
100%
Winchester StaBALL HD
<<locked>>
93%
56956
89%
**56
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2209
<<locked>>
81%
44541
70%
**67
97%
ADI AR 2213
<<locked>>
81%
39871
62%
**92
95%
[ADI AR 2217]*
<<locked>>
83%
31749
50%
**52
90%
[ADI AR 2225]*
<<locked>>
81%
27006
42%
**48
91%
Accurate 3100
<<locked>>
81%
40408
63%
**26
99%
[Accurate MAGPRO]*
<<locked>>
81%
39508
62%
**72
92%
Alliant Reloder-16
<<locked>>
81%
51285
80%
**02
100%
Alliant Reloder-19
<<locked>>
81%
44541
70%
**51
97%
Alliant Reloder-22
<<locked>>
81%
40437
63%
**95
96%
Alliant Reloder-23
<<locked>>
81%
39059
61%
**49
100%
Alliant Reloder-25
<<locked>>
81%
33692
53%
**57
97%
Alliant Reloder-26
<<locked>>
81%
43816
69%
**13
100%
[Alliant Reloder-33]*
<<locked>>
92%
40030
63%
**25
90%
[Baschieri & Pellagri 109]*
<<locked>>
81%
39392
62%
**00
90%
Bofors RP15
<<locked>>
81%
37434
59%
**20
95%
[Bofors RP30]*
<<locked>>
81%
31082
49%
**75
91%
Bofors RP5
<<locked>>
81%
40437
63%
**95
96%
[Hodgdon H1000]*
<<locked>>
83%
31749
50%
**52
90%
Hodgdon H4350
<<locked>>
81%
48167
75%
**77
99%
[Hodgdon H4831]*
<<locked>>
81%
37391
59%
**80
93%
Hodgdon H4831 SC
<<locked>>
81%
41785
65%
**82
95%
Hodgdon Hybrid 100V
<<locked>>
81%
48370
76%
**77
100%
[Hodgdon Retumbo]*
<<locked>>
81%
27006
42%
**48
91%
Hodgdon TrailBoss
<<locked>>
81%
28500
45%
**78
100%
IMR 4350
<<locked>>
81%
50473
79%
**23
99%
IMR 4831
<<locked>>
81%
45890
72%
**51
100%
IMR 4955 Enduron
<<locked>>
81%
41423
65%
**40
95%
IMR 7828 SSC
<<locked>>
81%
41133
64%
**31
95%
[IMR 7977 Enduron]*
<<locked>>
91%
48907
77%
**48
90%
[IMR 8133 Enduron]*
<<locked>>
88%
31111
49%
**75
90%
Lovex S070
<<locked>>
81%
52518
82%
**59
100%
Lovex S071
<<locked>>
81%
34780
54%
**98
97%
Norma 204
<<locked>>
81%
51155
80%
**72
99%
[Norma 217]*
<<locked>>
84%
27412
43%
**80
90%
Norma MRP
<<locked>>
81%
42728
67%
**64
98%
Norma URP
<<locked>>
81%
52040
82%
**76
100%
Ramshot Grand
<<locked>>
81%
43192
68%
**90
96%
Ramshot Hunter
<<locked>>
81%
51184
80%
**72
100%
Ramshot Magnum
<<locked>>
81%
37855
59%
**33
96%
ReloadSwiss RS 14
<<locked>>
81%
29196
46%
**21
100%
ReloadSwiss RS 70
<<locked>>
81%
52344
82%
**41
100%
[ReloadSwiss RS 76]*
<<locked>>
81%
32111
50%
**38
94%
[ReloadSwiss RS 80]*
<<locked>>
85%
34287
54%
**74
90%
Rottweil R 904
<<locked>>
81%
45542
71%
**38
97%
Rottweil R 905
<<locked>>
81%
44121
69%
**48
98%
SNPE Vectan Tubal 7000
<<locked>>
81%
53200
83%
**13
100%
Somchem S361
<<locked>>
81%
46789
73%
**31
96%
Somchem S365
<<locked>>
81%
49603
78%
**33
100%
Somchem S385
<<locked>>
81%
44556
70%
**25
98%
Vihtavuori N150
<<locked>>
81%
51590
81%
**67
100%
Vihtavuori N165
<<locked>>
81%
37536
59%
**61
96%
[Vihtavuori N170]*
<<locked>>
94%
43627
68%
**89
90%
Vihtavuori N555
<<locked>>
81%
43642
68%
**38
100%
[Vihtavuori N560]*
<<locked>>
81%
40422
63%
**15
94%
[Vihtavuori N565]*
<<locked>>
81%
35128
55%
**54
92%
[Vihtavuori N568]*
<<locked>>
85%
35128
55%
**97
90%
[Vihtavuori N570]*
<<locked>>
90%
40872
64%
**61
90%
Winchester 6.5 StaBALL
<<locked>>
81%
53200
83%
**17
100%
Winchester StaBALL HD
<<locked>>
81%
36100
57%
**92
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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