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Load data for 37XC + .375 | 256gr | Sologne GPA

Recommended Powder(s): Hodgdon H414, Hodgdon Superformance, Ramshot Hunter, ReloadSwiss RS 70, Winchester 760

37XC + .375 | 256gr | Sologne GPA

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.375 | 256gr | Sologne GPA
Manufacturer SKU:
375-256-16.6
Bullet Weight:
256gr | 16.6g
Bullet Diameter:
0.375" | 9.52mm
Bullet Length:
<<locked>>
Caliber:
37XC load data
Case Length (l3):
3.087" | 78.4mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
Case Capacity:
139.8 Grains of Water | 9.08 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
69618 psi | 4800 bar
LID:
LID_B12384_C453
Last updated:
2026-06-10

Load data for 218 loads in caliber 37XC with .375 | 256gr | Sologne GPA bullet and 109 powders such as Hodgdon H414, Hodgdon Superformance, Ramshot Hunter, ReloadSwiss RS 70, Winchester 760. 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 APS 450
<<locked>>
84%
62424
90%
**67
101%
ADI AR 2206H
<<locked>>
84%
62250
89%
**33
100%
ADI AR 2208
<<locked>>
89%
62613
90%
**33
100%
ADI AR 2209
<<locked>>
97%
57130
82%
**40
98%
ADI AR 2213
<<locked>>
97%
50807
73%
**61
96%
[ADI AR 2225]*
<<locked>>
97%
32851
47%
**03
92%
Accurate 2495
<<locked>>
85%
62279
89%
**28
100%
Accurate 2700
<<locked>>
86%
62366
90%
**97
99%
Accurate 3100
<<locked>>
97%
50125
72%
**89
99%
Accurate 4064
<<locked>>
87%
62569
90%
**87
100%
Accurate 4350
<<locked>>
94%
62598
90%
**89
100%
Accurate MAGPRO
<<locked>>
97%
51895
75%
**20
95%
Alliant Power Pro 2000-MR
<<locked>>
85%
62598
90%
**58
100%
Alliant Reloder- TS 15.5
<<locked>>
88%
62308
90%
**33
100%
Alliant Reloder-15
<<locked>>
86%
62468
90%
**56
100%
Alliant Reloder-16
<<locked>>
96%
62236
89%
**35
100%
Alliant Reloder-17
<<locked>>
91%
62207
89%
**31
100%
Alliant Reloder-19
<<locked>>
97%
55840
80%
**23
98%
Alliant Reloder-22
<<locked>>
97%
50024
72%
**71
97%
Alliant Reloder-23
<<locked>>
97%
47094
68%
**05
100%
Alliant Reloder-25
<<locked>>
97%
41292
59%
**30
98%
Alliant Reloder-26
<<locked>>
97%
54302
78%
**99
100%
Baschieri & Pellagri 107
<<locked>>
83%
62279
89%
**49
100%
[Baschieri & Pellagri 109]*
<<locked>>
97%
50792
73%
**76
92%
Bofors RP15
<<locked>>
97%
45890
66%
**89
96%
Bofors RP3
<<locked>>
88%
62279
89%
**33
100%
[Bofors RP30]*
<<locked>>
97%
37231
53%
**25
92%
Bofors RP5
<<locked>>
97%
50024
72%
**71
97%
Bofors RP7
<<locked>>
92%
62598
90%
**40
100%
[Hodgdon H1000]*
<<locked>>
97%
40698
58%
**48
93%
Hodgdon H380
<<locked>>
88%
62424
90%
**53
100%
Hodgdon H414 👍
<<locked>>
93%
62511
90%
**09
100%
Hodgdon H4350
<<locked>>
92%
62656
90%
**82
99%
Hodgdon H4831
<<locked>>
97%
54273
78%
**74
96%
Hodgdon H4831 SC
<<locked>>
97%
53316
77%
**51
96%
Hodgdon H4895
<<locked>>
83%
62366
90%
**36
100%
Hodgdon Hybrid 100V
<<locked>>
97%
61017
88%
**27
100%
Hodgdon LEVERevolution
<<locked>>
85%
61946
89%
**59
100%
Hodgdon Retumbo
<<locked>>
97%
40306
58%
**40
95%
Hodgdon Superformance 👍
<<locked>>
93%
62613
90%
**41
100%
Hodgdon TrailBoss
<<locked>>
97%
35027
50%
**62
100%
Hodgdon VARGET
<<locked>>
85%
62439
90%
**23
100%
IMR 4064
<<locked>>
87%
61946
89%
**10
100%
IMR 4166 Enduron
<<locked>>
86%
62062
89%
**10
100%
IMR 4350
<<locked>>
96%
62627
90%
**59
100%
IMR 4451 Enduron
<<locked>>
92%
62526
90%
**40
100%
IMR 4831
<<locked>>
96%
62598
90%
**72
100%
IMR 4895
<<locked>>
86%
62482
90%
**63
100%
IMR 4955 Enduron
<<locked>>
97%
56507
81%
**74
97%
IMR 7828 SSC
<<locked>>
97%
48472
70%
**35
95%
Lovex D073.6
<<locked>>
83%
62410
90%
**00
100%
Lovex S060
<<locked>>
84%
62163
89%
**74
100%
Lovex S062
<<locked>>
87%
62627
90%
**10
100%
Lovex S065
<<locked>>
93%
62395
90%
**33
100%
Lovex S070
<<locked>>
95%
62424
90%
**53
100%
Lovex S071
<<locked>>
97%
42119
60%
**51
98%
Norma 201
<<locked>>
84%
62482
90%
**00
100%
Norma 202
<<locked>>
84%
62540
90%
**84
100%
Norma 203B
<<locked>>
87%
62236
89%
**46
100%
Norma 204
<<locked>>
95%
62569
90%
**95
99%
Norma MRP
<<locked>>
97%
53200
76%
**56
99%
Norma URP
<<locked>>
95%
62497
90%
**92
100%
Ramshot Big Game
<<locked>>
86%
62265
89%
**56
100%
Ramshot Grand
<<locked>>
97%
48443
70%
**51
96%
Ramshot Hunter 👍
<<locked>>
96%
62323
90%
**09
100%
Ramshot Magnum
<<locked>>
97%
43511
63%
**26
96%
ReloadSwiss RS 14
<<locked>>
97%
35607
51%
**04
100%
ReloadSwiss RS 50
<<locked>>
88%
62540
90%
**40
100%
ReloadSwiss RS 52
<<locked>>
83%
62120
89%
**05
100%
ReloadSwiss RS 60
<<locked>>
89%
62062
89%
**28
100%
ReloadSwiss RS 62
<<locked>>
94%
62366
90%
**05
100%
ReloadSwiss RS 70 👍
<<locked>>
95%
62540
90%
**64
100%
ReloadSwiss RS 76
<<locked>>
97%
40074
58%
**33
96%
Rottweil R 902
<<locked>>
86%
62279
89%
**87
100%
Rottweil R 903
<<locked>>
90%
62250
89%
**27
100%
Rottweil R 904
<<locked>>
97%
58465
84%
**07
98%
Rottweil R 905
<<locked>>
97%
55216
79%
**10
98%
Rottweil R 907
<<locked>>
92%
62598
90%
**40
100%
SNPE Vectan SP 11
<<locked>>
89%
62221
89%
**69
100%
SNPE Vectan SP 9
<<locked>>
84%
62410
90%
**30
100%
SNPE Vectan Tubal 3000
<<locked>>
84%
62555
90%
**15
100%
SNPE Vectan Tubal 5000
<<locked>>
90%
62598
90%
**99
100%
SNPE Vectan Tubal 7000
<<locked>>
93%
62584
90%
**90
100%
SNPE Vectan Tubal 8000
<<locked>>
97%
54737
79%
**04
98%
Shooters World Long Rifle
<<locked>>
93%
62395
90%
**33
100%
Shooters World Match Rifle
<<locked>>
83%
62410
90%
**00
100%
Shooters World Precision
<<locked>>
87%
62627
90%
**10
100%
Shooters World SW4350
<<locked>>
95%
62424
90%
**53
100%
Somchem S335
<<locked>>
84%
62526
90%
**18
100%
Somchem S355
<<locked>>
90%
62221
89%
**27
100%
Somchem S361
<<locked>>
97%
60437
87%
**97
97%
Somchem S365
<<locked>>
97%
61960
89%
**92
100%
Somchem S385
<<locked>>
97%
55985
80%
**87
99%
Vihtavuori N133
<<locked>>
84%
62468
90%
**82
100%
Vihtavuori N135
<<locked>>
87%
62062
89%
**31
100%
Vihtavuori N140
<<locked>>
85%
62120
89%
**48
100%
Vihtavuori N150
<<locked>>
91%
62584
90%
**81
100%
Vihtavuori N160
<<locked>>
94%
61917
89%
**49
100%
Vihtavuori N165
<<locked>>
97%
48153
69%
**49
97%
Vihtavuori N540
<<locked>>
86%
62091
89%
**67
100%
Vihtavuori N550
<<locked>>
94%
62540
90%
**76
100%
Vihtavuori N555
<<locked>>
97%
53156
76%
**94
100%
Vihtavuori N560
<<locked>>
97%
53258
76%
**40
96%
[Vihtavuori N565]*
<<locked>>
97%
42424
61%
**17
93%
Winchester 6.5 StaBALL
<<locked>>
94%
62221
89%
**13
100%
Winchester 760 👍
<<locked>>
93%
62511
90%
**09
100%
Winchester StaBALL HD
<<locked>>
97%
42192
61%
**64
100%
Winchester StaBALL Match
<<locked>>
84%
62279
89%
**30
100%
Winchester Supreme 780
<<locked>>
97%
52533
75%
**25
98%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI APS 450
<<locked>>
81%
59712
86%
**28
100%
ADI AR 2206H
<<locked>>
81%
57450
83%
**71
100%
ADI AR 2208
<<locked>>
81%
48849
70%
**23
100%
[ADI AR 2209]*
<<locked>>
81%
33736
48%
**74
91%
[ADI AR 2213]*
<<locked>>
87%
36419
52%
**52
90%
[ADI AR 2225]*
<<locked>>
94%
30414
44%
**28
90%
Accurate 2495
<<locked>>
81%
54665
79%
**36
100%
Accurate 2700
<<locked>>
81%
52185
75%
**46
98%
[Accurate 3100]*
<<locked>>
81%
29196
42%
**52
93%
Accurate 4064
<<locked>>
81%
51822
74%
**43
100%
Accurate 4350
<<locked>>
81%
39784
57%
**21
99%
[Accurate MAGPRO]*
<<locked>>
88%
38116
55%
**38
90%
Alliant Power Pro 2000-MR
<<locked>>
81%
54157
78%
**36
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
49240
71%
**46
100%
Alliant Reloder-15
<<locked>>
81%
52736
76%
**22
100%
Alliant Reloder-16
<<locked>>
81%
38450
55%
**21
99%
Alliant Reloder-17
<<locked>>
81%
43859
63%
**53
100%
[Alliant Reloder-19]*
<<locked>>
81%
33605
48%
**74
91%
[Alliant Reloder-22]*
<<locked>>
83%
31720
46%
**61
90%
Alliant Reloder-23
<<locked>>
81%
28253
41%
**79
96%
[Alliant Reloder-25]*
<<locked>>
82%
26020
37%
**00
90%
Alliant Reloder-26
<<locked>>
81%
30226
43%
**84
95%
Baschieri & Pellagri 107
<<locked>>
81%
57551
83%
**84
100%
[Baschieri & Pellagri 109]*
<<locked>>
93%
45687
66%
**74
90%
[Bofors RP15]*
<<locked>>
86%
31995
46%
**70
90%
Bofors RP3
<<locked>>
81%
49893
72%
**59
100%
[Bofors RP30]*
<<locked>>
94%
33634
48%
**39
90%
[Bofors RP5]*
<<locked>>
83%
31720
46%
**61
90%
Bofors RP7
<<locked>>
81%
43613
63%
**28
97%
[Hodgdon H1000]*
<<locked>>
92%
35128
50%
**13
90%
Hodgdon H380
<<locked>>
81%
50154
72%
**72
100%
Hodgdon H414
<<locked>>
81%
41756
60%
**64
97%
Hodgdon H4350
<<locked>>
81%
44672
64%
**80
96%
[Hodgdon H4831]*
<<locked>>
85%
37130
53%
**39
90%
[Hodgdon H4831 SC]*
<<locked>>
86%
37130
53%
**39
90%
Hodgdon H4895
<<locked>>
81%
58102
83%
**81
100%
Hodgdon Hybrid 100V
<<locked>>
81%
36085
52%
**16
99%
Hodgdon LEVERevolution
<<locked>>
81%
54795
79%
**64
100%
[Hodgdon Retumbo]*
<<locked>>
91%
32779
47%
**36
90%
Hodgdon Superformance
<<locked>>
81%
40611
58%
**64
96%
Hodgdon TrailBoss
<<locked>>
81%
27746
40%
**14
100%
Hodgdon VARGET
<<locked>>
81%
55550
80%
**25
100%
IMR 4064
<<locked>>
81%
51445
74%
**59
100%
IMR 4166 Enduron
<<locked>>
81%
53635
77%
**89
99%
IMR 4350
<<locked>>
81%
39001
56%
**49
95%
IMR 4451 Enduron
<<locked>>
81%
45150
65%
**57
97%
IMR 4831
<<locked>>
81%
38116
55%
**66
98%
IMR 4895
<<locked>>
81%
54172
78%
**48
100%
[IMR 4955 Enduron]*
<<locked>>
83%
36201
52%
**80
90%
[IMR 7828 SSC]*
<<locked>>
88%
36114
52%
**62
90%
Lovex D073.6
<<locked>>
81%
57943
83%
**41
100%
Lovex S060
<<locked>>
81%
55970
80%
**92
100%
Lovex S062
<<locked>>
81%
51517
74%
**56
100%
Lovex S065
<<locked>>
81%
42598
61%
**12
98%
Lovex S070
<<locked>>
81%
40814
59%
**95
97%
[Lovex S071]*
<<locked>>
81%
25208
36%
**28
90%
Norma 201
<<locked>>
81%
55970
80%
**12
100%
Norma 202
<<locked>>
81%
56739
81%
**05
100%
Norma 203B
<<locked>>
81%
52228
75%
**08
100%
[Norma 204]*
<<locked>>
81%
38537
55%
**72
93%
[Norma MRP]*
<<locked>>
81%
30618
44%
**57
91%
Norma URP
<<locked>>
81%
39320
56%
**08
98%
Ramshot Big Game
<<locked>>
81%
52663
76%
**25
100%
[Ramshot Grand]*
<<locked>>
88%
35346
51%
**56
90%
Ramshot Hunter
<<locked>>
81%
38189
55%
**95
96%
[Ramshot Magnum]*
<<locked>>
87%
30690
44%
**15
90%
ReloadSwiss RS 14
<<locked>>
81%
28297
41%
**54
100%
ReloadSwiss RS 50
<<locked>>
81%
50285
72%
**62
99%
ReloadSwiss RS 52
<<locked>>
81%
57087
82%
**40
100%
ReloadSwiss RS 60
<<locked>>
81%
46572
67%
**05
100%
ReloadSwiss RS 62
<<locked>>
81%
39436
57%
**31
98%
ReloadSwiss RS 70
<<locked>>
81%
38218
55%
**38
98%
[ReloadSwiss RS 76]*
<<locked>>
89%
30748
44%
**70
90%
Rottweil R 902
<<locked>>
81%
53417
77%
**66
100%
Rottweil R 903
<<locked>>
81%
46934
67%
**10
100%
[Rottweil R 904]*
<<locked>>
81%
34896
50%
**61
90%
[Rottweil R 905]*
<<locked>>
81%
32503
47%
**54
91%
Rottweil R 907
<<locked>>
81%
43613
63%
**28
97%
SNPE Vectan SP 11
<<locked>>
81%
48124
69%
**56
100%
SNPE Vectan SP 9
<<locked>>
81%
55622
80%
**35
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
56782
82%
**40
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
47964
69%
**12
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
41756
60%
**56
97%
[SNPE Vectan Tubal 8000]*
<<locked>>
81%
32198
46%
**44
91%
Shooters World Long Rifle
<<locked>>
81%
42598
61%
**12
98%
Shooters World Match Rifle
<<locked>>
81%
57943
83%
**41
100%
Shooters World Precision
<<locked>>
81%
51517
74%
**56
100%
Shooters World SW4350
<<locked>>
81%
40814
59%
**95
97%
Somchem S335
<<locked>>
81%
56434
81%
**40
100%
Somchem S355
<<locked>>
81%
47123
68%
**07
100%
[Somchem S361]*
<<locked>>
82%
36854
53%
**77
90%
Somchem S365
<<locked>>
81%
35621
51%
**66
100%
[Somchem S385]*
<<locked>>
81%
33243
48%
**41
93%
Vihtavuori N133
<<locked>>
81%
57232
82%
**26
100%
Vihtavuori N135
<<locked>>
81%
51169
73%
**94
100%
Vihtavuori N140
<<locked>>
81%
53708
77%
**36
100%
Vihtavuori N150
<<locked>>
81%
44904
64%
**35
100%
Vihtavuori N160
<<locked>>
81%
40843
59%
**08
99%
[Vihtavuori N165]*
<<locked>>
82%
29849
43%
**43
90%
Vihtavuori N540
<<locked>>
81%
51996
75%
**33
100%
Vihtavuori N550
<<locked>>
81%
40306
58%
**08
98%
Vihtavuori N555
<<locked>>
81%
31227
45%
**51
97%
[Vihtavuori N560]*
<<locked>>
86%
36608
53%
**92
90%
[Vihtavuori N565]*
<<locked>>
92%
35404
51%
**66
90%
Winchester 6.5 StaBALL
<<locked>>
81%
40089
58%
**79
100%
Winchester 760
<<locked>>
81%
41756
60%
**64
97%
Winchester StaBALL HD
<<locked>>
81%
24889
36%
**39
95%
Winchester StaBALL Match
<<locked>>
81%
56144
81%
**51
100%
[Winchester Supreme 780]*
<<locked>>
82%
31531
45%
**95
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.

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