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Load data for .375 Rem. Ultra Mag + .375 | 270gr | Atomic 29 HP

Recommended Powder(s): Alliant Reloder-16, Hodgdon H414, Hodgdon LVR, ReloadSwiss RS 62, Winchester 760

.375 Rem. Ultra Mag + .375 | 270gr | Atomic 29 HP

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.375 | 270gr | Atomic 29 HP
Bullet Weight:
270gr | 17.5g
Bullet Diameter:
0.375" | 9.52mm
Bullet Length:
<<locked>>
Caliber:
.375 Rem. Ultra 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:
117.0 Grains of Water | 7.60 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B12242_C557
Last updated:
2026-03-22

Load data for 218 loads in caliber .375 Rem. Ultra Mag with .375 | 270gr | Atomic 29 HP bullet and 109 powders such as Alliant Reloder-16, Hodgdon H414, Hodgdon LVR, ReloadSwiss RS 62, 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.

    .

    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%
57072
89%
**84
100%
ADI AR 2208
<<locked>>
91%
57290
90%
**71
100%
ADI AR 2209
<<locked>>
97%
47790
75%
**02
96%
[ADI AR 2213]*
<<locked>>
97%
42627
67%
**26
92%
ADI Benchmark 8208
<<locked>>
84%
57072
89%
**48
100%
Accurate 2200
<<locked>>
84%
57159
90%
**57
100%
Accurate 2495
<<locked>>
84%
56898
89%
**28
100%
Accurate 2520
<<locked>>
84%
57435
90%
**57
100%
Accurate 2700
<<locked>>
92%
57130
90%
**21
98%
Accurate 3100
<<locked>>
97%
39987
63%
**57
97%
Accurate 4064
<<locked>>
89%
56739
89%
**51
100%
Accurate 4350
<<locked>>
97%
55970
88%
**23
100%
Alliant AR-Comp
<<locked>>
83%
56826
89%
**02
100%
Alliant Power Pro 2000-MR
<<locked>>
87%
57406
90%
**05
100%
Alliant Reloder- TS 15.5
<<locked>>
91%
57058
89%
**87
100%
Alliant Reloder-15
<<locked>>
88%
57319
90%
**03
100%
Alliant Reloder-16 👍
<<locked>>
97%
53940
85%
**36
100%
Alliant Reloder-17
<<locked>>
94%
56869
89%
**82
100%
Alliant Reloder-19
<<locked>>
97%
46731
73%
**95
96%
[Alliant Reloder-22]*
<<locked>>
97%
40901
64%
**23
94%
Alliant Reloder-23
<<locked>>
97%
38464
60%
**90
99%
Alliant Reloder-25
<<locked>>
97%
33895
53%
**88
95%
Alliant Reloder-26
<<locked>>
97%
43265
68%
**44
99%
Baschieri & Pellagri 107
<<locked>>
85%
57159
90%
**03
100%
[Bofors RP15]*
<<locked>>
97%
37724
59%
**57
92%
Bofors RP3
<<locked>>
90%
56739
89%
**87
100%
[Bofors RP5]*
<<locked>>
97%
40901
64%
**23
94%
Bofors RP7
<<locked>>
95%
57406
90%
**80
99%
Hodgdon BL-C2
<<locked>>
84%
57421
90%
**00
100%
Hodgdon Benchmark
<<locked>>
83%
56956
89%
**08
100%
Hodgdon CFE223
<<locked>>
89%
57174
90%
**36
100%
Hodgdon H380
<<locked>>
90%
56724
89%
**90
100%
Hodgdon H414 👍
<<locked>>
93%
57290
90%
**49
99%
Hodgdon H4350
<<locked>>
97%
52025
82%
**18
98%
[Hodgdon H4831 SC]*
<<locked>>
97%
44817
70%
**20
92%
Hodgdon H4895
<<locked>>
85%
57116
89%
**87
100%
Hodgdon Hybrid 100V
<<locked>>
97%
50517
79%
**15
100%
Hodgdon LVR 👍
<<locked>>
95%
57217
90%
**33
100%
Hodgdon Superperformance
<<locked>>
95%
57014
89%
**76
99%
Hodgdon VARGET
<<locked>>
91%
56884
89%
**71
100%
Hodgdon TrailBoss
<<locked>>
96%
33968
53%
**11
100%
IMR 3031
<<locked>>
88%
57276
90%
**64
100%
IMR 4064
<<locked>>
92%
57145
90%
**64
100%
IMR 4166 Enduron
<<locked>>
92%
57276
90%
**54
99%
IMR 4350
<<locked>>
97%
55288
87%
**67
98%
IMR 4451 Enduron
<<locked>>
93%
56927
89%
**77
99%
IMR 4831
<<locked>>
97%
47152
74%
**82
99%
IMR 4895
<<locked>>
87%
56855
89%
**10
100%
[IMR 4955 Enduron]*
<<locked>>
97%
44425
70%
**87
93%
[IMR 7828 SSC]*
<<locked>>
97%
43613
68%
**52
92%
IMR 8208 XBR
<<locked>>
84%
57072
89%
**48
100%
Lovex D073.6
<<locked>>
85%
56971
89%
**57
100%
Lovex S060
<<locked>>
86%
57116
90%
**28
100%
Lovex S062
<<locked>>
89%
56739
89%
**51
100%
Lovex S065
<<locked>>
96%
57406
90%
**84
100%
Lovex S070
<<locked>>
97%
57000
89%
**94
99%
[Lovex S071]*
<<locked>>
97%
33228
52%
**20
94%
Norma 201
<<locked>>
86%
57014
89%
**44
100%
Norma 202
<<locked>>
86%
57029
89%
**38
100%
Norma 203B
<<locked>>
89%
57188
90%
**00
100%
Norma 204
<<locked>>
97%
56072
88%
**10
97%
Norma MRP
<<locked>>
97%
42902
67%
**98
96%
Norma URP
<<locked>>
97%
55463
87%
**20
100%
Ramshot Big Game
<<locked>>
88%
57246
90%
**17
100%
[Ramshot Grand]*
<<locked>>
97%
45818
72%
**05
94%
Ramshot Hunter
<<locked>>
97%
54389
85%
**17
99%
[Ramshot Magnum]*
<<locked>>
97%
39537
62%
**67
94%
Ramshot TAC
<<locked>>
84%
56971
89%
**71
100%
Ramshot Wild Boar
<<locked>>
84%
57029
89%
**84
100%
ReloadSwiss RS 14
<<locked>>
97%
34809
55%
**54
100%
ReloadSwiss RS 50
<<locked>>
90%
57421
90%
**87
99%
ReloadSwiss RS 52
<<locked>>
86%
57334
90%
**56
100%
ReloadSwiss RS 60
<<locked>>
92%
57072
89%
**85
100%
ReloadSwiss RS 62 👍
<<locked>>
97%
56159
88%
**46
100%
ReloadSwiss RS 70
<<locked>>
97%
55463
87%
**76
100%
Rottweil R 901
<<locked>>
84%
56884
89%
**15
100%
Rottweil R 902
<<locked>>
88%
57232
90%
**44
100%
Rottweil R 903
<<locked>>
92%
57232
90%
**84
100%
Rottweil R 904
<<locked>>
97%
49487
78%
**79
95%
Rottweil R 905
<<locked>>
97%
45701
72%
**75
96%
Rottweil R 907
<<locked>>
95%
57406
90%
**80
99%
SNPE Vectan SP 11
<<locked>>
91%
57305
90%
**23
100%
SNPE Vectan SP 7
<<locked>>
85%
56898
89%
**64
100%
SNPE Vectan SP 9
<<locked>>
86%
57203
90%
**84
100%
SNPE Vectan Tubal 3000
<<locked>>
85%
56753
89%
**66
100%
SNPE Vectan Tubal 5000
<<locked>>
91%
57000
89%
**59
100%
SNPE Vectan Tubal 7000
<<locked>>
95%
57000
89%
**28
99%
Shooters World Long Rifle
<<locked>>
96%
57406
90%
**84
100%
Shooters World Match Rifle
<<locked>>
85%
56971
89%
**57
100%
Shooters World Precision
<<locked>>
89%
56739
89%
**51
100%
Somchem S335
<<locked>>
86%
57246
90%
**75
100%
Somchem S341
<<locked>>
85%
57043
89%
**61
100%
Somchem S355
<<locked>>
92%
57087
89%
**84
100%
[Somchem S361]*
<<locked>>
97%
50865
80%
**69
94%
Somchem S365
<<locked>>
97%
50024
78%
**64
100%
Somchem S385
<<locked>>
97%
46282
73%
**59
97%
Vihtavuori N133
<<locked>>
88%
57276
90%
**59
100%
Vihtavuori N135
<<locked>>
93%
57072
89%
**02
100%
Vihtavuori N140
<<locked>>
88%
57087
89%
**12
100%
Vihtavuori N150
<<locked>>
97%
56159
88%
**31
100%
Vihtavuori N160
<<locked>>
95%
57363
90%
**00
100%
[Vihtavuori N165]*
<<locked>>
97%
38479
60%
**05
94%
Vihtavuori N540
<<locked>>
88%
57087
89%
**44
100%
Vihtavuori N550
<<locked>>
95%
56782
89%
**33
100%
Vihtavuori N555
<<locked>>
97%
42322
66%
**56
99%
Winchester 6.5 StaBALL
<<locked>>
96%
57116
89%
**77
100%
Winchester 760 👍
<<locked>>
93%
57290
90%
**49
99%
Winchester StaBALL HD
<<locked>>
97%
34374
54%
**93
99%
Winchester Supreme 780
<<locked>>
97%
48283
76%
**75
96%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
49530
78%
**79
100%
ADI AR 2208
<<locked>>
81%
41959
66%
**41
99%
[ADI AR 2209]*
<<locked>>
87%
34026
53%
**23
90%
[ADI AR 2213]*
<<locked>>
94%
38899
61%
**44
90%
ADI Benchmark 8208
<<locked>>
81%
51677
81%
**75
100%
Accurate 2200
<<locked>>
81%
51648
81%
**79
100%
Accurate 2495
<<locked>>
81%
51343
80%
**59
100%
Accurate 2520
<<locked>>
81%
52272
82%
**95
100%
Accurate 2700
<<locked>>
81%
40248
63%
**59
95%
[Accurate 3100]*
<<locked>>
84%
25730
40%
**33
90%
Accurate 4064
<<locked>>
81%
43076
68%
**57
100%
Accurate 4350
<<locked>>
81%
31952
50%
**03
96%
Alliant AR-Comp
<<locked>>
81%
52939
83%
**52
100%
Alliant Power Pro 2000-MR
<<locked>>
81%
45730
72%
**21
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
41800
65%
**61
100%
Alliant Reloder-15
<<locked>>
81%
44860
70%
**20
99%
Alliant Reloder-16
<<locked>>
81%
32358
51%
**23
96%
Alliant Reloder-17
<<locked>>
81%
36274
57%
**48
99%
[Alliant Reloder-19]*
<<locked>>
86%
33112
52%
**13
90%
[Alliant Reloder-22]*
<<locked>>
90%
32967
52%
**49
90%
[Alliant Reloder-23]*
<<locked>>
81%
23163
36%
**77
92%
[Alliant Reloder-25]*
<<locked>>
90%
27340
43%
**05
90%
[Alliant Reloder-26]*
<<locked>>
82%
25512
40%
**95
90%
Baschieri & Pellagri 107
<<locked>>
81%
49182
77%
**85
100%
[Bofors RP15]*
<<locked>>
93%
33330
52%
**56
90%
Bofors RP3
<<locked>>
81%
41640
65%
**67
100%
[Bofors RP5]*
<<locked>>
90%
32967
52%
**49
90%
[Bofors RP7]*
<<locked>>
81%
37188
58%
**39
94%
Hodgdon BL-C2
<<locked>>
81%
51938
81%
**25
100%
Hodgdon Benchmark
<<locked>>
81%
53301
84%
**59
100%
Hodgdon CFE223
<<locked>>
81%
43656
68%
**33
99%
Hodgdon H380
<<locked>>
81%
42424
66%
**70
98%
Hodgdon H414
<<locked>>
81%
37550
59%
**21
95%
[Hodgdon H4350]*
<<locked>>
81%
31502
49%
**31
91%
[Hodgdon H4831 SC]*
<<locked>>
93%
39421
62%
**21
90%
Hodgdon H4895
<<locked>>
81%
50009
78%
**92
100%
Hodgdon Hybrid 100V
<<locked>>
81%
29704
47%
**31
97%
Hodgdon LVR
<<locked>>
81%
35273
55%
**69
96%
[Hodgdon Superperformance]*
<<locked>>
81%
33924
53%
**52
92%
Hodgdon VARGET
<<locked>>
81%
41640
65%
**31
99%
Hodgdon TrailBoss
<<locked>>
82%
27528
43%
**83
100%
IMR 3031
<<locked>>
81%
45832
72%
**13
100%
IMR 4064
<<locked>>
81%
41147
64%
**21
99%
IMR 4166 Enduron
<<locked>>
81%
40799
64%
**85
96%
[IMR 4350]*
<<locked>>
81%
33170
52%
**70
92%
IMR 4451 Enduron
<<locked>>
81%
38783
61%
**75
95%
[IMR 4831]*
<<locked>>
81%
28195
44%
**98
94%
IMR 4895
<<locked>>
81%
46050
72%
**46
100%
[IMR 4955 Enduron]*
<<locked>>
92%
38159
60%
**69
90%
[IMR 7828 SSC]*
<<locked>>
93%
38435
60%
**48
90%
IMR 8208 XBR
<<locked>>
81%
51677
81%
**75
100%
Lovex D073.6
<<locked>>
81%
49182
77%
**56
100%
Lovex S060
<<locked>>
81%
49124
77%
**16
100%
Lovex S062
<<locked>>
81%
43932
69%
**67
100%
Lovex S065
<<locked>>
81%
36056
56%
**26
96%
[Lovex S070]*
<<locked>>
81%
34258
54%
**00
94%
[Lovex S071]*
<<locked>>
89%
25730
40%
**33
90%
Norma 201
<<locked>>
81%
48385
76%
**33
100%
Norma 202
<<locked>>
81%
48762
76%
**30
100%
Norma 203B
<<locked>>
81%
44222
69%
**07
100%
[Norma 204]*
<<locked>>
82%
33605
53%
**03
90%
[Norma MRP]*
<<locked>>
87%
30211
47%
**03
90%
Norma URP
<<locked>>
81%
32401
51%
**10
96%
Ramshot Big Game
<<locked>>
81%
44280
69%
**30
100%
[Ramshot Grand]*
<<locked>>
92%
37884
59%
**41
90%
[Ramshot Hunter]*
<<locked>>
81%
31763
50%
**97
93%
[Ramshot Magnum]*
<<locked>>
92%
32692
51%
**10
90%
Ramshot TAC
<<locked>>
81%
51793
81%
**98
99%
Ramshot Wild Boar
<<locked>>
81%
51692
81%
**12
100%
ReloadSwiss RS 14
<<locked>>
81%
27383
43%
**09
100%
ReloadSwiss RS 50
<<locked>>
81%
42757
67%
**51
97%
ReloadSwiss RS 52
<<locked>>
81%
48138
75%
**25
100%
ReloadSwiss RS 60
<<locked>>
81%
38624
61%
**00
100%
ReloadSwiss RS 62
<<locked>>
81%
31908
50%
**26
95%
[ReloadSwiss RS 70]*
<<locked>>
81%
31923
50%
**29
94%
Rottweil R 901
<<locked>>
81%
52112
82%
**52
100%
Rottweil R 902
<<locked>>
81%
45745
72%
**80
100%
Rottweil R 903
<<locked>>
81%
39131
61%
**15
99%
[Rottweil R 904]*
<<locked>>
88%
36535
57%
**43
90%
[Rottweil R 905]*
<<locked>>
87%
32518
51%
**06
90%
[Rottweil R 907]*
<<locked>>
81%
37188
58%
**39
94%
SNPE Vectan SP 11
<<locked>>
81%
40495
63%
**67
99%
SNPE Vectan SP 7
<<locked>>
81%
50415
79%
**72
99%
SNPE Vectan SP 9
<<locked>>
81%
48080
75%
**52
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
49516
78%
**74
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
41350
65%
**49
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
81%
35201
55%
**70
94%
Shooters World Long Rifle
<<locked>>
81%
36056
56%
**26
96%
Shooters World Match Rifle
<<locked>>
81%
49182
77%
**56
100%
Shooters World Precision
<<locked>>
81%
43932
69%
**67
100%
Somchem S335
<<locked>>
81%
49255
77%
**74
100%
Somchem S341
<<locked>>
81%
50009
78%
**66
100%
Somchem S355
<<locked>>
81%
39769
62%
**18
99%
[Somchem S361]*
<<locked>>
89%
39102
61%
**69
90%
Somchem S365
<<locked>>
81%
29022
45%
**64
98%
[Somchem S385]*
<<locked>>
84%
29849
47%
**21
90%
Vihtavuori N133
<<locked>>
81%
46746
73%
**18
100%
Vihtavuori N135
<<locked>>
81%
38725
61%
**52
100%
Vihtavuori N140
<<locked>>
81%
45745
72%
**61
100%
Vihtavuori N150
<<locked>>
81%
33866
53%
**77
99%
Vihtavuori N160
<<locked>>
81%
35288
55%
**39
97%
[Vihtavuori N165]*
<<locked>>
91%
31386
49%
**47
90%
Vihtavuori N540
<<locked>>
81%
45223
71%
**80
100%
Vihtavuori N550
<<locked>>
81%
35766
56%
**79
97%
[Vihtavuori N555]*
<<locked>>
81%
24700
39%
**49
93%
Winchester 6.5 StaBALL
<<locked>>
81%
33649
53%
**90
98%
Winchester 760
<<locked>>
81%
37550
59%
**21
95%
[Winchester StaBALL HD]*
<<locked>>
84%
22176
35%
**90
90%
[Winchester Supreme 780]*
<<locked>>
87%
33504
53%
**93
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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