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Load data for .350 Mag. Rigby + .358 | 275gr | A-Square MONO RN

Recommended Powder(s): Alliant Reloder-16, Alliant Reloder-23, Vihtavuori N555, Winchester StaBALL HD

.350 Mag. Rigby + .358 | 275gr | A-Square MONO RN

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.358 | 275gr | A-Square MONO RN
Bullet Weight:
275gr | 17.8g
Bullet Diameter:
0.358" | 9.09mm
Bullet Length:
1.000" | 25.4mm
Caliber:
.350 Mag. Rigby load data
Case Length (l3):
2.750" | 69.8mm
Cartridge Length (C.O.L.):
3.521" | 89.4mm
Seated Depth:
0.229" | 5.8mm
Shank Seated Depth:
0.229" | 5.8mm
Case Capacity:
91.1 Grains of Water | 5.92 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
44962 psi | 3100 bar
LID:
LID_B387_C501
Last updated:
2025-01-01

Load data for 76 loads in caliber .350 Mag. Rigby with .358 | 275gr | A-Square MONO RN bullet and 38 powders such as Alliant Reloder-16, Alliant Reloder-23, Vihtavuori N555, Winchester StaBALL HD. 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>>
90%
40118
89%
**62
94%
[ADI AR 2213]*
<<locked>>
94%
40422
90%
**85
92%
Accurate 3100
<<locked>>
95%
39929
89%
**52
97%
Accurate 4350
<<locked>>
85%
40176
89%
**72
99%
Alliant Reloder-16 👍
<<locked>>
86%
40408
90%
**95
99%
[Alliant Reloder-19]*
<<locked>>
90%
40132
89%
**72
94%
[Alliant Reloder-22]*
<<locked>>
95%
40306
90%
**15
94%
Alliant Reloder-23 👍
<<locked>>
96%
39914
89%
**18
100%
Alliant Reloder-25
<<locked>>
97%
35723
79%
**43
96%
Alliant Reloder-26
<<locked>>
93%
40089
89%
**80
98%
Hodgdon H4350
<<locked>>
87%
40263
90%
**16
95%
Hodgdon Hybrid 100V
<<locked>>
88%
40016
89%
**43
100%
Hodgdon Superperformance
<<locked>>
85%
40466
90%
**05
96%
IMR 4350
<<locked>>
86%
40393
90%
**23
95%
IMR 4831
<<locked>>
90%
40234
89%
**52
99%
[IMR 4955 Enduron]*
<<locked>>
92%
40451
90%
**16
92%
[IMR 7828 SSC]*
<<locked>>
93%
40306
90%
**95
92%
Lovex S070
<<locked>>
84%
40016
89%
**16
96%
Lovex S071
<<locked>>
97%
35636
79%
**70
96%
[Norma 204]*
<<locked>>
86%
40292
90%
**52
94%
Norma MRP
<<locked>>
93%
40263
90%
**48
96%
Norma URP
<<locked>>
86%
40393
90%
**72
99%
Ramshot Hunter
<<locked>>
87%
40408
90%
**88
97%
Ramshot Magnum
<<locked>>
96%
40089
89%
**92
95%
ReloadSwiss RS 60
<<locked>>
83%
40364
90%
**34
100%
ReloadSwiss RS 62
<<locked>>
86%
40364
90%
**98
98%
ReloadSwiss RS 70
<<locked>>
86%
40219
89%
**21
98%
[Rottweil R 904]*
<<locked>>
89%
40306
90%
**23
93%
[Rottweil R 905]*
<<locked>>
91%
39972
89%
**72
94%
[Somchem S361]*
<<locked>>
88%
40292
90%
**97
91%
Somchem S365
<<locked>>
89%
40219
89%
**02
100%
Somchem S385
<<locked>>
91%
40321
90%
**56
95%
Vihtavuori N150
<<locked>>
85%
40379
90%
**90
100%
Vihtavuori N160
<<locked>>
83%
40422
90%
**39
99%
Vihtavuori N165
<<locked>>
96%
39871
89%
**36
95%
Vihtavuori N555 👍
<<locked>>
93%
40466
90%
**18
99%
Winchester 6.5 StaBALL
<<locked>>
85%
39885
89%
**23
100%
Winchester StaBALL HD 👍
<<locked>>
97%
36361
81%
**51
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
[ADI AR 2209]*
<<locked>>
83%
32343
72%
**88
90%
[ADI AR 2213]*
<<locked>>
91%
37420
83%
**16
90%
[Accurate 3100]*
<<locked>>
81%
25237
56%
**21
90%
Accurate 4350
<<locked>>
81%
34722
77%
**60
97%
Alliant Reloder-16
<<locked>>
81%
34301
76%
**67
97%
[Alliant Reloder-19]*
<<locked>>
83%
31734
71%
**78
90%
[Alliant Reloder-22]*
<<locked>>
88%
32010
71%
**24
90%
[Alliant Reloder-23]*
<<locked>>
81%
25019
56%
**44
94%
[Alliant Reloder-25]*
<<locked>>
87%
26353
59%
**77
90%
[Alliant Reloder-26]*
<<locked>>
81%
26324
59%
**23
92%
[Hodgdon H4350]*
<<locked>>
81%
33373
74%
**75
93%
Hodgdon Hybrid 100V
<<locked>>
81%
31734
71%
**75
98%
[Hodgdon Superperformance]*
<<locked>>
81%
35926
80%
**06
94%
[IMR 4350]*
<<locked>>
81%
34896
78%
**05
93%
IMR 4831
<<locked>>
81%
30371
68%
**46
96%
[IMR 4955 Enduron]*
<<locked>>
89%
36622
81%
**41
90%
[IMR 7828 SSC]*
<<locked>>
91%
36941
82%
**23
90%
Lovex S070
<<locked>>
81%
36318
81%
**41
95%
[Lovex S071]*
<<locked>>
85%
24801
55%
**08
90%
[Norma 204]*
<<locked>>
81%
34214
76%
**18
91%
[Norma MRP]*
<<locked>>
83%
28921
64%
**69
90%
Norma URP
<<locked>>
81%
34592
77%
**54
97%
Ramshot Hunter
<<locked>>
81%
33576
75%
**38
95%
[Ramshot Magnum]*
<<locked>>
90%
31850
71%
**08
90%
ReloadSwiss RS 60
<<locked>>
81%
37275
83%
**69
100%
ReloadSwiss RS 62
<<locked>>
81%
33997
76%
**67
97%
ReloadSwiss RS 70
<<locked>>
81%
33924
75%
**80
96%
[Rottweil R 904]*
<<locked>>
85%
35099
78%
**11
90%
[Rottweil R 905]*
<<locked>>
83%
31038
69%
**69
90%
[Somchem S361]*
<<locked>>
86%
37507
83%
**41
90%
Somchem S365
<<locked>>
81%
31053
69%
**11
99%
[Somchem S385]*
<<locked>>
81%
28993
64%
**06
90%
Vihtavuori N150
<<locked>>
81%
35984
80%
**11
100%
Vihtavuori N160
<<locked>>
81%
37579
84%
**80
98%
[Vihtavuori N165]*
<<locked>>
87%
30124
67%
**16
90%
Vihtavuori N555
<<locked>>
81%
26948
60%
**13
95%
Winchester 6.5 StaBALL
<<locked>>
81%
35404
79%
**31
99%
[Winchester StaBALL HD]*
<<locked>>
81%
22017
49%
**91
91%

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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