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Load data for 9.3 x 66 Sako (370 Sako Mag) + .366 | 258gr | RWS H-Mantel

Recommended Powder(s): ADI AR 2206H, Hodgdon BL-C2, Ramshot Wild Boar, ReloadSwiss RS 52, SNPE Vectan SP 9

9.3 x 66 Sako (370 Sako Mag) + .366 | 258gr | RWS H-Mantel

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.366 | 258gr | RWS H-Mantel
Bullet Weight:
258gr | 16.7g
Bullet Diameter:
0.366" | 9.30mm
Bullet Length:
1.260" | 32.0mm
Caliber:
9.3 x 66 Sako (370 Sako Mag) load data
Case Length (l3):
2.590" | 65.8mm
Cartridge Length (C.O.L.):
3.290" | 83.6mm
Seated Depth:
0.560" | 14.2mm
Shank Seated Depth:
0.560" | 14.2mm
Case Capacity:
81.0 Grains of Water | 5.26 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
60191 psi | 4150 bar
LID:
LID_B5486_C1263
Last updated:
2025-02-02

Load data for 188 loads in caliber 9.3 x 66 Sako (370 Sako Mag) with .366 | 258gr | RWS H-Mantel bullet and 94 powders such as ADI AR 2206H, Hodgdon BL-C2, Ramshot Wild Boar, ReloadSwiss RS 52, SNPE Vectan SP 9. 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 2206H 👍
<<locked>>
94%
53766
89%
**20
99%
ADI AR 2208
<<locked>>
97%
50227
83%
**51
98%
ADI AR 2219
<<locked>>
84%
53417
89%
**80
100%
Accurate 2015
<<locked>>
89%
53650
89%
**28
100%
Accurate 2200
<<locked>>
92%
54143
90%
**80
98%
Accurate 2230
<<locked>>
87%
54012
90%
**74
99%
Accurate 2460
<<locked>>
88%
53534
89%
**77
100%
Accurate 2495
<<locked>>
93%
53751
89%
**03
100%
Accurate 2520
<<locked>>
92%
53925
90%
**23
100%
[Accurate 2700]*
<<locked>>
97%
49052
81%
**65
93%
Accurate 4064
<<locked>>
97%
49052
82%
**64
100%
[Accurate 4350]*
<<locked>>
97%
35882
60%
**00
94%
Alliant AR-Comp
<<locked>>
93%
54172
90%
**87
100%
Alliant Reloder- TS 15.5
<<locked>>
97%
48399
80%
**61
99%
Alliant Reloder-10x
<<locked>>
87%
53998
90%
**41
100%
Alliant Reloder-15
<<locked>>
97%
53156
88%
**26
99%
[Alliant Reloder-16]*
<<locked>>
97%
37956
63%
**16
94%
Alliant Reloder-17
<<locked>>
97%
42830
71%
**48
98%
Baschieri & Pellagri 106
<<locked>>
85%
53650
89%
**92
100%
Baschieri & Pellagri 107
<<locked>>
94%
53272
89%
**33
98%
Hodgdon BL-C2 👍
<<locked>>
92%
53548
89%
**43
100%
Hodgdon Benchmark
<<locked>>
90%
53563
89%
**48
100%
Hodgdon CFE223
<<locked>>
97%
52185
87%
**46
98%
Hodgdon H322
<<locked>>
90%
53838
89%
**84
100%
Hodgdon H335
<<locked>>
85%
54070
90%
**00
100%
Hodgdon H380
<<locked>>
97%
50778
84%
**84
97%
[Hodgdon H414]*
<<locked>>
97%
44411
74%
**25
93%
Hodgdon H4198
<<locked>>
83%
53417
89%
**88
100%
Hodgdon Hybrid 100V
<<locked>>
97%
34534
57%
**24
95%
[Hodgdon LVR]*
<<locked>>
97%
41365
69%
**65
94%
Hodgdon VARGET
<<locked>>
97%
49676
83%
**38
98%
IMR 3031
<<locked>>
97%
52895
88%
**16
100%
IMR 4064
<<locked>>
96%
48414
80%
**15
98%
[IMR 4166 Enduron]*
<<locked>>
97%
49269
82%
**88
94%
IMR 4198
<<locked>>
86%
53374
89%
**88
100%
[IMR 4451 Enduron]*
<<locked>>
97%
46789
78%
**79
93%
[IMR 4831]*
<<locked>>
97%
31618
53%
**82
92%
IMR 4895
<<locked>>
96%
53374
89%
**46
99%
IMR 8208 XBR
<<locked>>
92%
53316
89%
**80
100%
Lovex D073.4
<<locked>>
86%
53519
89%
**67
100%
Lovex D073.5
<<locked>>
88%
53055
88%
**70
100%
Lovex D073.6
<<locked>>
94%
53447
89%
**13
100%
Lovex S060
<<locked>>
93%
53650
89%
**44
99%
Lovex S062
<<locked>>
97%
51576
86%
**74
100%
[Lovex S065]*
<<locked>>
97%
42148
70%
**23
94%
[Lovex S070]*
<<locked>>
97%
39668
66%
**93
92%
Norma 201
<<locked>>
94%
53983
90%
**93
100%
Norma 202
<<locked>>
94%
54056
90%
**97
100%
Norma 203B
<<locked>>
97%
51851
86%
**13
99%
[Norma URP]*
<<locked>>
97%
37362
62%
**10
94%
Ramshot Big Game
<<locked>>
97%
52257
87%
**43
99%
Ramshot TAC
<<locked>>
91%
53693
89%
**87
97%
Ramshot Wild Boar 👍
<<locked>>
92%
53171
88%
**16
99%
Ramshot X-Terminator
<<locked>>
89%
53403
89%
**67
99%
ReloadSwiss RS 40
<<locked>>
88%
53809
89%
**84
100%
ReloadSwiss RS 50
<<locked>>
97%
51169
85%
**61
95%
ReloadSwiss RS 52 👍
<<locked>>
97%
50488
84%
**30
100%
ReloadSwiss RS 60
<<locked>>
97%
41626
69%
**31
98%
[ReloadSwiss RS 62]*
<<locked>>
97%
36782
61%
**20
93%
[ReloadSwiss RS 70]*
<<locked>>
97%
38203
63%
**20
92%
Rottweil R 901
<<locked>>
92%
53693
89%
**64
100%
Rottweil R 902
<<locked>>
96%
53650
89%
**77
100%
Rottweil R 903
<<locked>>
97%
45266
75%
**15
98%
[Rottweil R 907]*
<<locked>>
97%
44701
74%
**43
92%
SNPE Vectan SP 10
<<locked>>
84%
53853
89%
**87
100%
SNPE Vectan SP 11
<<locked>>
97%
46978
78%
**67
98%
SNPE Vectan SP 7
<<locked>>
93%
53548
89%
**93
97%
SNPE Vectan SP 9 👍
<<locked>>
95%
53838
89%
**20
99%
SNPE Vectan Tubal 3000
<<locked>>
93%
53882
90%
**11
100%
SNPE Vectan Tubal 5000
<<locked>>
97%
49516
82%
**65
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
97%
41524
69%
**74
92%
[Shooters World Long Rifle]*
<<locked>>
97%
42148
70%
**23
94%
Shooters World Match Rifle
<<locked>>
94%
53447
89%
**13
100%
Shooters World Precision
<<locked>>
97%
51576
86%
**74
100%
Shooters World Tactical Rifle
<<locked>>
86%
53708
89%
**51
100%
Somchem S321
<<locked>>
89%
54099
90%
**16
100%
Somchem S335
<<locked>>
93%
53577
89%
**25
100%
Somchem S341
<<locked>>
93%
53722
89%
**03
99%
Somchem S355
<<locked>>
97%
46079
77%
**18
98%
Somchem S365
<<locked>>
97%
33373
55%
**60
96%
Vihtavuori N120
<<locked>>
84%
53345
89%
**26
100%
Vihtavuori N130
<<locked>>
90%
53998
90%
**92
100%
Vihtavuori N133
<<locked>>
95%
53737
89%
**11
100%
Vihtavuori N135
<<locked>>
97%
44150
73%
**52
100%
Vihtavuori N140
<<locked>>
97%
54099
90%
**74
100%
Vihtavuori N150
<<locked>>
97%
39044
65%
**77
98%
Vihtavuori N160
<<locked>>
97%
41814
69%
**49
95%
Vihtavuori N530
<<locked>>
90%
53171
88%
**90
100%
Vihtavuori N540
<<locked>>
96%
53476
89%
**00
100%
Vihtavuori N550
<<locked>>
97%
41423
69%
**85
95%
Winchester 6.5 StaBALL
<<locked>>
97%
40915
68%
**13
97%
Winchester 748
<<locked>>
90%
54114
90%
**46
100%
[Winchester 760]*
<<locked>>
97%
44411
74%
**25
93%
Winchester StaBALL Match
<<locked>>
88%
53592
89%
**30
99%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
36260
60%
**24
95%
[ADI AR 2208]*
<<locked>>
81%
31111
52%
**93
92%
ADI AR 2219
<<locked>>
81%
47601
79%
**02
100%
Accurate 2015
<<locked>>
81%
41365
69%
**60
100%
[Accurate 2200]*
<<locked>>
81%
38464
64%
**28
94%
Accurate 2230
<<locked>>
81%
42743
71%
**10
98%
Accurate 2460
<<locked>>
81%
42975
71%
**23
99%
Accurate 2495
<<locked>>
81%
35723
59%
**38
100%
Accurate 2520
<<locked>>
81%
36376
60%
**51
99%
[Accurate 2700]*
<<locked>>
91%
40466
67%
**24
90%
Accurate 4064
<<locked>>
81%
30052
50%
**23
98%
[Accurate 4350]*
<<locked>>
90%
28369
47%
**29
90%
Alliant AR-Comp
<<locked>>
81%
36883
61%
**57
100%
[Alliant Reloder- TS 15.5]*
<<locked>>
81%
29704
49%
**06
94%
Alliant Reloder-10x
<<locked>>
81%
44976
75%
**23
100%
[Alliant Reloder-15]*
<<locked>>
81%
32126
53%
**62
93%
[Alliant Reloder-16]*
<<locked>>
90%
31082
52%
**49
90%
[Alliant Reloder-17]*
<<locked>>
83%
27354
45%
**80
90%
Baschieri & Pellagri 106
<<locked>>
81%
46862
78%
**03
100%
[Baschieri & Pellagri 107]*
<<locked>>
81%
34954
58%
**18
93%
Hodgdon BL-C2
<<locked>>
81%
36376
60%
**67
97%
Hodgdon Benchmark
<<locked>>
81%
40698
68%
**44
98%
[Hodgdon CFE223]*
<<locked>>
81%
30792
51%
**46
91%
Hodgdon H322
<<locked>>
81%
40640
68%
**90
100%
Hodgdon H335
<<locked>>
81%
46920
78%
**98
100%
[Hodgdon H380]*
<<locked>>
81%
30182
50%
**03
90%
[Hodgdon H414]*
<<locked>>
92%
37971
63%
**03
90%
Hodgdon H4198
<<locked>>
81%
50009
83%
**39
100%
[Hodgdon Hybrid 100V]*
<<locked>>
87%
26049
43%
**08
90%
[Hodgdon LVR]*
<<locked>>
88%
31604
53%
**59
90%
[Hodgdon VARGET]*
<<locked>>
81%
30835
51%
**87
92%
IMR 3031
<<locked>>
81%
32111
53%
**85
99%
[IMR 4064]*
<<locked>>
81%
30342
50%
**70
92%
[IMR 4166 Enduron]*
<<locked>>
87%
37246
62%
**75
90%
IMR 4198
<<locked>>
81%
46108
77%
**93
100%
[IMR 4451 Enduron]*
<<locked>>
90%
37623
63%
**18
90%
[IMR 4831]*
<<locked>>
94%
28848
48%
**13
90%
[IMR 4895]*
<<locked>>
81%
32895
55%
**88
94%
IMR 8208 XBR
<<locked>>
81%
38421
64%
**44
97%
Lovex D073.4
<<locked>>
81%
44904
75%
**46
99%
Lovex D073.5
<<locked>>
81%
42554
71%
**16
99%
Lovex D073.6
<<locked>>
81%
34316
57%
**11
98%
Lovex S060
<<locked>>
81%
37246
62%
**82
96%
Lovex S062
<<locked>>
81%
31807
53%
**29
96%
[Lovex S065]*
<<locked>>
88%
32721
54%
**36
90%
[Lovex S070]*
<<locked>>
94%
36114
60%
**24
90%
Norma 201
<<locked>>
81%
35534
59%
**88
97%
Norma 202
<<locked>>
81%
35491
59%
**08
99%
[Norma 203B]*
<<locked>>
81%
31662
53%
**52
94%
[Norma URP]*
<<locked>>
89%
29588
49%
**29
90%
[Ramshot Big Game]*
<<locked>>
81%
31169
52%
**52
93%
[Ramshot TAC]*
<<locked>>
81%
38159
63%
**34
93%
Ramshot Wild Boar
<<locked>>
81%
37144
62%
**54
96%
Ramshot X-Terminator
<<locked>>
81%
41800
69%
**83
97%
ReloadSwiss RS 40
<<locked>>
81%
43091
72%
**23
99%
[ReloadSwiss RS 50]*
<<locked>>
85%
35259
59%
**82
90%
ReloadSwiss RS 52
<<locked>>
81%
29950
50%
**49
95%
[ReloadSwiss RS 60]*
<<locked>>
83%
26643
44%
**57
90%
[ReloadSwiss RS 62]*
<<locked>>
91%
30545
51%
**78
90%
[ReloadSwiss RS 70]*
<<locked>>
94%
35520
59%
**60
90%
Rottweil R 901
<<locked>>
81%
39276
65%
**41
99%
Rottweil R 902
<<locked>>
81%
33750
56%
**42
96%
[Rottweil R 903]*
<<locked>>
81%
26977
45%
**51
92%
[Rottweil R 907]*
<<locked>>
93%
39465
66%
**51
90%
SNPE Vectan SP 10
<<locked>>
81%
48124
80%
**11
100%
[SNPE Vectan SP 11]*
<<locked>>
81%
28689
48%
**93
92%
[SNPE Vectan SP 7]*
<<locked>>
81%
35926
60%
**01
93%
SNPE Vectan SP 9
<<locked>>
81%
34737
58%
**95
95%
SNPE Vectan Tubal 3000
<<locked>>
81%
37550
62%
**69
99%
SNPE Vectan Tubal 5000
<<locked>>
81%
30719
51%
**51
99%
[SNPE Vectan Tubal 7000]*
<<locked>>
93%
36376
60%
**85
90%
[Shooters World Long Rifle]*
<<locked>>
88%
32721
54%
**36
90%
Shooters World Match Rifle
<<locked>>
81%
34316
57%
**11
98%
Shooters World Precision
<<locked>>
81%
31807
53%
**29
96%
Shooters World Tactical Rifle
<<locked>>
81%
45832
76%
**36
99%
Somchem S321
<<locked>>
81%
40785
68%
**10
98%
Somchem S335
<<locked>>
81%
36811
61%
**75
100%
Somchem S341
<<locked>>
81%
35549
59%
**05
95%
[Somchem S355]*
<<locked>>
81%
28398
47%
**67
93%
[Somchem S365]*
<<locked>>
86%
24047
40%
**01
90%
Vihtavuori N120
<<locked>>
81%
49226
82%
**77
100%
Vihtavuori N130
<<locked>>
81%
41785
69%
**31
100%
Vihtavuori N133
<<locked>>
81%
35085
58%
**33
100%
Vihtavuori N135
<<locked>>
81%
27470
46%
**34
99%
Vihtavuori N140
<<locked>>
81%
33199
55%
**46
99%
[Vihtavuori N150]*
<<locked>>
81%
24279
40%
**46
92%
[Vihtavuori N160]*
<<locked>>
87%
29921
50%
**00
90%
Vihtavuori N530
<<locked>>
81%
40379
67%
**90
98%
Vihtavuori N540
<<locked>>
81%
32561
54%
**56
98%
[Vihtavuori N550]*
<<locked>>
86%
29762
49%
**36
90%
[Winchester 6.5 StaBALL]*
<<locked>>
83%
26411
44%
**85
90%
Winchester 748
<<locked>>
81%
39610
66%
**23
99%
[Winchester 760]*
<<locked>>
92%
37971
63%
**03
90%
Winchester StaBALL Match
<<locked>>
81%
42163
70%
**59
98%

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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