top of page

Load data for .375 Weath. Mag. + .375 | 300gr | A-Square MONO RN

Recommended Powder(s):

.375 Weath. Mag. + .375 | 300gr | A-Square MONO RN

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.375 | 300gr | A-Square MONO RN
Bullet Weight:
300gr | 19.4g
Bullet Diameter:
0.375" | 9.52mm
Bullet Length:
<<locked>>
Caliber:
.375 Weath. Mag. load data
Case Length (l3):
2.850" | 72.4mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
Case Capacity:
105.0 Grains of Water | 6.82 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B393_C568
Last updated:
2026-04-30

Load data for 222 loads in caliber .375 Weath. Mag. with .375 | 300gr | A-Square MONO RN bullet and 111 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.

    .

    Loading_icon.gif

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 2206H
<<locked>>
85%
57276
90%
**79
100%
ADI AR 2208
<<locked>>
91%
57145
90%
**62
100%
ADI AR 2209
<<locked>>
97%
47500
74%
**00
96%
[ADI AR 2213]*
<<locked>>
97%
42627
67%
**25
92%
ADI Benchmark 8208
<<locked>>
84%
57029
89%
**36
100%
Accurate 2200
<<locked>>
84%
56913
89%
**43
100%
Accurate 2495
<<locked>>
84%
57188
90%
**16
100%
Accurate 2520
<<locked>>
84%
57276
90%
**49
100%
Accurate 2700
<<locked>>
92%
57188
90%
**23
98%
Accurate 3100
<<locked>>
97%
40219
63%
**62
97%
Accurate 4064
<<locked>>
89%
56956
89%
**36
100%
Accurate 4350
<<locked>>
97%
56217
88%
**25
100%
Alliant AR-Comp
<<locked>>
83%
56913
89%
**90
100%
Alliant Power Pro 2000-MR
<<locked>>
87%
57174
90%
**90
100%
Alliant Reloder- TS 15.5
<<locked>>
91%
57116
90%
**75
100%
Alliant Reloder-15
<<locked>>
88%
57203
90%
**95
100%
Alliant Reloder-16
<<locked>>
97%
53490
84%
**21
100%
Alliant Reloder-17
<<locked>>
94%
57334
90%
**90
100%
Alliant Reloder-19
<<locked>>
97%
46702
73%
**97
96%
[Alliant Reloder-22]*
<<locked>>
97%
40785
64%
**31
94%
Alliant Reloder-23
<<locked>>
97%
38435
60%
**88
99%
Alliant Reloder-25
<<locked>>
97%
34069
53%
**03
95%
Alliant Reloder-26
<<locked>>
97%
42482
67%
**36
99%
Baschieri & Pellagri 107
<<locked>>
85%
56797
89%
**89
100%
[Bofors RP15]*
<<locked>>
97%
37318
58%
**59
92%
Bofors RP3
<<locked>>
90%
57392
90%
**85
100%
[Bofors RP5]*
<<locked>>
97%
40785
64%
**31
94%
Bofors RP7
<<locked>>
94%
57130
90%
**69
99%
Hodgdon BL-C2
<<locked>>
84%
57116
89%
**85
100%
Hodgdon Benchmark
<<locked>>
83%
57217
90%
**00
100%
Hodgdon H380
<<locked>>
90%
56666
89%
**85
100%
Hodgdon H414 👍
<<locked>>
93%
57246
90%
**48
99%
Hodgdon H4350
<<locked>>
97%
56913
89%
**98
98%
[Hodgdon H4831 SC]*
<<locked>>
97%
44657
70%
**25
92%
Hodgdon H4895
<<locked>>
85%
57087
89%
**69
100%
Hodgdon Hybrid 100V
<<locked>>
97%
50285
79%
**13
100%
Hodgdon LVR 👍
<<locked>>
95%
56869
89%
**28
100%
Hodgdon Superperformance
<<locked>>
96%
57072
89%
**77
99%
Hodgdon VARGET
<<locked>>
89%
56855
89%
**56
100%
Hodgdon LEVERevolution
<<locked>>
89%
57188
90%
**12
100%
Hodgdon TrailBoss
<<locked>>
96%
34229
54%
**12
100%
IMR 3031
<<locked>>
88%
57029
89%
**46
100%
IMR 4064
<<locked>>
91%
56927
89%
**52
100%
IMR 4166 Enduron
<<locked>>
92%
57392
90%
**43
99%
IMR 4350
<<locked>>
97%
54940
86%
**56
98%
IMR 4451 Enduron
<<locked>>
93%
56971
89%
**69
99%
IMR 4831
<<locked>>
97%
47036
74%
**77
99%
IMR 4895
<<locked>>
88%
57334
90%
**05
100%
[IMR 4955 Enduron]*
<<locked>>
97%
44614
70%
**92
93%
[IMR 7828 SSC]*
<<locked>>
97%
43192
68%
**48
92%
IMR 8208 XBR
<<locked>>
84%
57029
89%
**36
100%
Lovex D073.6
<<locked>>
86%
57406
90%
**56
100%
Lovex S060
<<locked>>
86%
57334
90%
**16
100%
Lovex S062
<<locked>>
89%
56826
89%
**46
100%
Lovex S065
<<locked>>
96%
57116
89%
**69
100%
Lovex S070
<<locked>>
97%
56579
89%
**82
99%
[Lovex S071]*
<<locked>>
97%
33431
52%
**31
94%
Norma 201
<<locked>>
86%
57203
90%
**39
100%
Norma 202
<<locked>>
86%
57217
90%
**30
100%
Norma 203B
<<locked>>
89%
57145
90%
**92
100%
Norma 204
<<locked>>
97%
55013
86%
**98
97%
Norma MRP
<<locked>>
97%
42946
67%
**03
96%
Norma URP
<<locked>>
97%
54592
86%
**05
100%
Ramshot Big Game
<<locked>>
89%
57188
90%
**12
100%
[Ramshot Grand]*
<<locked>>
97%
45063
71%
**97
93%
Ramshot Hunter
<<locked>>
97%
53272
83%
**05
99%
[Ramshot Magnum]*
<<locked>>
97%
39175
61%
**72
94%
Ramshot TAC
<<locked>>
84%
57348
90%
**69
100%
Ramshot Wild Boar
<<locked>>
84%
57246
90%
**79
100%
ReloadSwiss RS 14
<<locked>>
96%
34722
54%
**45
100%
ReloadSwiss RS 50
<<locked>>
90%
57087
89%
**69
99%
ReloadSwiss RS 52
<<locked>>
86%
57072
89%
**44
100%
ReloadSwiss RS 60
<<locked>>
92%
57014
89%
**80
100%
ReloadSwiss RS 62 👍
<<locked>>
97%
55753
87%
**44
100%
ReloadSwiss RS 70 👍
<<locked>>
97%
54824
86%
**64
100%
Rottweil R 901
<<locked>>
84%
57101
89%
**00
100%
Rottweil R 902
<<locked>>
88%
57232
90%
**30
100%
Rottweil R 903
<<locked>>
92%
56956
89%
**72
100%
Rottweil R 904
<<locked>>
97%
49298
77%
**80
95%
Rottweil R 905
<<locked>>
97%
45469
71%
**74
96%
Rottweil R 907
<<locked>>
94%
57130
90%
**69
99%
SNPE Vectan SP 11
<<locked>>
91%
57145
90%
**12
100%
SNPE Vectan SP 7
<<locked>>
85%
57377
90%
**66
100%
SNPE Vectan SP 9
<<locked>>
86%
57058
89%
**66
100%
SNPE Vectan Tubal 3000
<<locked>>
85%
57116
89%
**57
100%
SNPE Vectan Tubal 5000
<<locked>>
91%
57043
89%
**54
100%
SNPE Vectan Tubal 7000
<<locked>>
96%
57101
89%
**30
99%
Shooters World Long Rifle
<<locked>>
96%
57116
89%
**69
100%
Shooters World Match Rifle
<<locked>>
86%
57406
90%
**56
100%
Shooters World Precision
<<locked>>
89%
56826
89%
**46
100%
Somchem S335
<<locked>>
86%
57392
90%
**67
100%
Somchem S341
<<locked>>
85%
57363
90%
**62
100%
Somchem S355
<<locked>>
92%
57116
89%
**75
100%
[Somchem S361]*
<<locked>>
97%
50691
79%
**74
94%
Somchem S365
<<locked>>
97%
49603
78%
**62
100%
Somchem S385
<<locked>>
97%
46296
73%
**61
97%
Vihtavuori N133
<<locked>>
85%
57276
90%
**38
100%
Vihtavuori N135
<<locked>>
90%
57363
90%
**93
100%
Vihtavuori N140
<<locked>>
87%
56826
89%
**97
100%
Vihtavuori N150
<<locked>>
93%
56855
89%
**30
100%
Vihtavuori N160
<<locked>>
97%
56913
89%
**98
100%
[Vihtavuori N165]*
<<locked>>
97%
39798
62%
**36
94%
Vihtavuori N530
<<locked>>
84%
57334
90%
**36
100%
Vihtavuori N540
<<locked>>
89%
56971
89%
**23
100%
Vihtavuori N550
<<locked>>
97%
56362
88%
**08
100%
Vihtavuori N555
<<locked>>
97%
42322
66%
**57
99%
[Vihtavuori N560]*
<<locked>>
97%
43555
68%
**87
92%
Winchester 6.5 StaBALL
<<locked>>
97%
57101
89%
**79
100%
Winchester 760 👍
<<locked>>
93%
57246
90%
**48
99%
Winchester StaBALL HD
<<locked>>
97%
34084
53%
**98
99%
Winchester Supreme 780
<<locked>>
97%
47355
74%
**64
96%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
49908
78%
**70
100%
ADI AR 2208
<<locked>>
81%
42351
66%
**36
99%
[ADI AR 2209]*
<<locked>>
86%
33504
53%
**15
90%
[ADI AR 2213]*
<<locked>>
94%
38827
61%
**46
90%
ADI Benchmark 8208
<<locked>>
81%
52040
82%
**70
100%
Accurate 2200
<<locked>>
81%
51953
81%
**74
100%
Accurate 2495
<<locked>>
81%
52141
82%
**57
100%
Accurate 2520
<<locked>>
81%
52591
82%
**93
100%
Accurate 2700
<<locked>>
81%
40625
64%
**60
95%
[Accurate 3100]*
<<locked>>
83%
25454
40%
**31
90%
Accurate 4064
<<locked>>
81%
44019
69%
**65
100%
Accurate 4350
<<locked>>
81%
32721
51%
**21
96%
Alliant AR-Comp
<<locked>>
81%
53011
83%
**44
100%
Alliant Power Pro 2000-MR
<<locked>>
81%
45614
71%
**13
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
42047
66%
**59
100%
Alliant Reloder-15
<<locked>>
81%
45324
71%
**15
100%
Alliant Reloder-16
<<locked>>
81%
32735
51%
**31
96%
Alliant Reloder-17
<<locked>>
81%
36593
57%
**46
99%
[Alliant Reloder-19]*
<<locked>>
85%
32808
51%
**11
90%
[Alliant Reloder-22]*
<<locked>>
90%
32779
51%
**51
90%
[Alliant Reloder-23]*
<<locked>>
81%
23685
37%
**05
93%
[Alliant Reloder-25]*
<<locked>>
89%
27253
43%
**13
90%
[Alliant Reloder-26]*
<<locked>>
81%
25193
39%
**96
90%
Baschieri & Pellagri 107
<<locked>>
81%
49052
77%
**80
100%
[Bofors RP15]*
<<locked>>
93%
33301
52%
**60
90%
Bofors RP3
<<locked>>
81%
41959
66%
**62
100%
[Bofors RP5]*
<<locked>>
90%
32779
51%
**51
90%
[Bofors RP7]*
<<locked>>
81%
37695
59%
**47
94%
Hodgdon BL-C2
<<locked>>
81%
52228
82%
**20
100%
Hodgdon Benchmark
<<locked>>
81%
53679
84%
**54
100%
Hodgdon H380
<<locked>>
81%
42757
67%
**75
98%
Hodgdon H414
<<locked>>
81%
37811
59%
**33
95%
[Hodgdon H4350]*
<<locked>>
81%
35085
55%
**21
92%
[Hodgdon H4831 SC]*
<<locked>>
93%
39218
61%
**23
90%
Hodgdon H4895
<<locked>>
81%
50386
79%
**80
100%
Hodgdon Hybrid 100V
<<locked>>
81%
30124
47%
**42
97%
Hodgdon LVR
<<locked>>
81%
35665
56%
**74
96%
[Hodgdon Superperformance]*
<<locked>>
81%
34084
53%
**64
92%
Hodgdon VARGET
<<locked>>
81%
44643
70%
**79
100%
Hodgdon LEVERevolution
<<locked>>
81%
43671
68%
**15
100%
Hodgdon TrailBoss
<<locked>>
93%
32706
51%
**86
100%
IMR 3031
<<locked>>
81%
46369
73%
**08
100%
IMR 4064
<<locked>>
81%
41510
65%
**16
99%
IMR 4166 Enduron
<<locked>>
81%
41220
65%
**87
96%
[IMR 4350]*
<<locked>>
81%
33344
52%
**75
92%
IMR 4451 Enduron
<<locked>>
81%
39117
61%
**77
95%
IMR 4831
<<locked>>
81%
28790
45%
**13
95%
IMR 4895
<<locked>>
81%
46528
73%
**48
100%
[IMR 4955 Enduron]*
<<locked>>
91%
37637
59%
**64
90%
[IMR 7828 SSC]*
<<locked>>
93%
38319
60%
**49
90%
IMR 8208 XBR
<<locked>>
81%
52040
82%
**70
100%
Lovex D073.6
<<locked>>
81%
49385
77%
**51
100%
Lovex S060
<<locked>>
81%
49487
78%
**08
100%
Lovex S062
<<locked>>
81%
44628
70%
**72
100%
Lovex S065
<<locked>>
81%
36622
57%
**28
96%
[Lovex S070]*
<<locked>>
81%
34708
54%
**11
94%
[Lovex S071]*
<<locked>>
88%
25454
40%
**31
90%
Norma 201
<<locked>>
81%
48689
76%
**18
100%
Norma 202
<<locked>>
81%
49197
77%
**25
100%
Norma 203B
<<locked>>
81%
44831
70%
**11
100%
[Norma 204]*
<<locked>>
81%
33127
52%
**98
90%
[Norma MRP]*
<<locked>>
86%
29863
47%
**98
90%
Norma URP
<<locked>>
81%
32880
52%
**24
96%
Ramshot Big Game
<<locked>>
81%
44396
70%
**21
100%
[Ramshot Grand]*
<<locked>>
92%
38043
60%
**52
90%
[Ramshot Hunter]*
<<locked>>
81%
32155
50%
**08
94%
[Ramshot Magnum]*
<<locked>>
91%
32416
51%
**18
90%
Ramshot TAC
<<locked>>
81%
51721
81%
**87
99%
Ramshot Wild Boar
<<locked>>
81%
51735
81%
**07
100%
ReloadSwiss RS 14
<<locked>>
89%
31183
49%
**83
100%
ReloadSwiss RS 50
<<locked>>
81%
43047
67%
**56
97%
ReloadSwiss RS 52
<<locked>>
81%
48196
76%
**16
100%
ReloadSwiss RS 60
<<locked>>
81%
38783
61%
**02
100%
ReloadSwiss RS 62
<<locked>>
81%
32300
51%
**38
96%
ReloadSwiss RS 70
<<locked>>
81%
32097
50%
**38
95%
Rottweil R 901
<<locked>>
81%
52779
83%
**48
100%
Rottweil R 902
<<locked>>
81%
46514
73%
**82
100%
Rottweil R 903
<<locked>>
81%
39595
62%
**13
99%
[Rottweil R 904]*
<<locked>>
87%
35984
56%
**34
90%
[Rottweil R 905]*
<<locked>>
86%
32184
50%
**05
90%
[Rottweil R 907]*
<<locked>>
81%
37695
59%
**47
94%
SNPE Vectan SP 11
<<locked>>
81%
40524
63%
**65
99%
SNPE Vectan SP 7
<<locked>>
81%
50618
79%
**70
99%
SNPE Vectan SP 9
<<locked>>
81%
48138
75%
**44
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
50024
78%
**69
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
41989
66%
**54
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
81%
35607
56%
**78
94%
Shooters World Long Rifle
<<locked>>
81%
36622
57%
**28
96%
Shooters World Match Rifle
<<locked>>
81%
49385
77%
**51
100%
Shooters World Precision
<<locked>>
81%
44628
70%
**72
100%
Somchem S335
<<locked>>
81%
49545
78%
**69
100%
Somchem S341
<<locked>>
81%
50038
78%
**64
100%
Somchem S355
<<locked>>
81%
40350
63%
**16
99%
[Somchem S361]*
<<locked>>
89%
38537
60%
**67
90%
Somchem S365
<<locked>>
81%
29443
46%
**78
98%
[Somchem S385]*
<<locked>>
83%
29544
46%
**26
90%
Vihtavuori N133
<<locked>>
81%
50575
79%
**59
100%
Vihtavuori N135
<<locked>>
81%
44019
69%
**26
100%
Vihtavuori N140
<<locked>>
81%
46615
73%
**65
100%
Vihtavuori N150
<<locked>>
81%
38450
60%
**60
100%
Vihtavuori N160
<<locked>>
81%
34316
54%
**28
97%
[Vihtavuori N165]*
<<locked>>
89%
30893
48%
**42
90%
Vihtavuori N530
<<locked>>
81%
52199
82%
**67
100%
Vihtavuori N540
<<locked>>
81%
44759
70%
**59
100%
Vihtavuori N550
<<locked>>
81%
33765
53%
**24
96%
[Vihtavuori N555]*
<<locked>>
81%
25454
40%
**77
93%
[Vihtavuori N560]*
<<locked>>
93%
39044
61%
**92
90%
Winchester 6.5 StaBALL
<<locked>>
81%
33808
53%
**98
98%
Winchester 760
<<locked>>
81%
37811
59%
**33
95%
[Winchester StaBALL HD]*
<<locked>>
83%
22089
35%
**91
90%
[Winchester Supreme 780]*
<<locked>>
86%
33040
52%
**92
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.

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

bottom of page