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Load data for 9.3 x 66 Sako (370 Sako Mag) + .366 | 262gr | MEN SPRN Starkm.

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Recommended Powder(s): Alliant Reloder-15, IMR 4895, Ramshot Big Game, ReloadSwiss RS 52, SNPE Vectan SP 11

9.3 x 66 Sako (370 Sako Mag) + .366 | 262gr | MEN SPRN Starkm.

Load Specifications

Bullet:
.366 | 262gr | MEN SPRN Starkm.
Bullet Weight:
262gr | 17.0g
Bullet Diameter:
0.366" | 9.30mm
Bullet Length:
1.000" | 25.4mm
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:
0.300" | 7.6mm
Shank Seated Depth:
0.300" | 7.6mm
Case Capacity:
81.0 Grains of Water | 5.26 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
60191 psi | 4150 bar
LID:
LID_B3796_C1263
Last updated:
2025-01-01

>> Use the Personalized Load Calculator further below to adjust input parameters. 

Load data for 186 loads in caliber 9.3 x 66 Sako (370 Sako Mag) with .366 | 262gr | MEN SPRN Starkm. bullet and 93 powders such as Alliant Reloder-15, IMR 4895, Ramshot Big Game, ReloadSwiss RS 52, SNPE Vectan SP 11. 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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    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.

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>>
90%
53751
89%
**46
100%
ADI AR 2208
<<locked>>
96%
53824
89%
**30
99%
Accurate 2015
<<locked>>
86%
53998
90%
**54
100%
Accurate 2200
<<locked>>
88%
53940
90%
**10
99%
Accurate 2230
<<locked>>
84%
53432
89%
**93
100%
Accurate 2460
<<locked>>
84%
53882
90%
**07
100%
Accurate 2495
<<locked>>
90%
54085
90%
**23
100%
Accurate 2520
<<locked>>
88%
53505
89%
**36
100%
Accurate 2700
<<locked>>
96%
53432
89%
**64
95%
Accurate 4064
<<locked>>
95%
53679
89%
**39
100%
Accurate 4350
<<locked>>
97%
42279
70%
**34
97%
Alliant AR-Comp
<<locked>>
89%
53621
89%
**97
100%
Alliant Reloder- TS 15.5
<<locked>>
96%
53766
89%
**59
100%
Alliant Reloder-10x
<<locked>>
83%
53447
89%
**48
100%
Alliant Reloder-15 👍
<<locked>>
94%
54056
90%
**72
99%
Alliant Reloder-16
<<locked>>
97%
42786
71%
**48
97%
Alliant Reloder-17
<<locked>>
97%
48776
81%
**82
100%
[Alliant Reloder-23]*
<<locked>>
97%
29776
49%
**88
93%
Baschieri & Pellagri 107
<<locked>>
90%
53882
90%
**66
99%
Hodgdon BL-C2
<<locked>>
89%
53737
89%
**69
100%
Hodgdon Benchmark
<<locked>>
87%
53563
89%
**67
100%
Hodgdon CFE223
<<locked>>
94%
53490
89%
**02
99%
Hodgdon H322
<<locked>>
87%
53896
90%
**07
100%
Hodgdon H380
<<locked>>
95%
53563
89%
**52
98%
Hodgdon H414
<<locked>>
97%
50154
83%
**59
96%
[Hodgdon H4350]*
<<locked>>
97%
40872
68%
**36
92%
Hodgdon Hybrid 100V
<<locked>>
97%
38783
64%
**39
98%
Hodgdon LVR
<<locked>>
97%
46847
78%
**93
97%
[Hodgdon Superperformance]*
<<locked>>
97%
46441
77%
**97
94%
Hodgdon VARGET
<<locked>>
96%
53635
89%
**23
99%
IMR 3031
<<locked>>
93%
53592
89%
**43
100%
IMR 4064
<<locked>>
97%
54157
90%
**26
99%
IMR 4166 Enduron
<<locked>>
96%
53505
89%
**84
96%
IMR 4198
<<locked>>
83%
53505
89%
**11
100%
[IMR 4350]*
<<locked>>
97%
43337
72%
**75
93%
IMR 4451 Enduron
<<locked>>
97%
51706
86%
**87
96%
IMR 4831
<<locked>>
97%
36230
60%
**03
95%
IMR 4895 👍
<<locked>>
93%
53896
90%
**82
100%
IMR 8208 XBR
<<locked>>
88%
53461
89%
**13
100%
Lovex D073.4
<<locked>>
83%
53998
90%
**93
100%
Lovex D073.5
<<locked>>
84%
53679
89%
**00
100%
Lovex D073.6
<<locked>>
91%
53911
90%
**39
100%
Lovex S060
<<locked>>
90%
53838
89%
**77
100%
Lovex S062
<<locked>>
94%
53751
89%
**26
100%
Lovex S065
<<locked>>
97%
47311
79%
**34
97%
Lovex S070
<<locked>>
97%
45092
75%
**18
95%
Norma 201
<<locked>>
91%
53954
90%
**13
100%
Norma 202
<<locked>>
90%
53461
89%
**13
100%
Norma 203B
<<locked>>
94%
54143
90%
**72
100%
Norma URP
<<locked>>
97%
42569
71%
**31
97%
Ramshot Big Game 👍
<<locked>>
94%
53780
89%
**89
100%
[Ramshot Hunter]*
<<locked>>
97%
41626
69%
**11
94%
Ramshot TAC
<<locked>>
88%
53780
89%
**20
98%
Ramshot Wild Boar
<<locked>>
89%
53693
89%
**49
100%
Ramshot X-Terminator
<<locked>>
86%
53766
89%
**03
99%
ReloadSwiss RS 40
<<locked>>
85%
53679
89%
**07
100%
ReloadSwiss RS 50
<<locked>>
95%
54070
90%
**33
97%
ReloadSwiss RS 52 👍
<<locked>>
94%
53403
89%
**92
100%
ReloadSwiss RS 60
<<locked>>
97%
47297
79%
**69
100%
ReloadSwiss RS 62
<<locked>>
97%
41771
69%
**44
96%
ReloadSwiss RS 70
<<locked>>
97%
43149
72%
**64
96%
Rottweil R 901
<<locked>>
88%
54056
90%
**87
100%
Rottweil R 902
<<locked>>
92%
53577
89%
**03
100%
Rottweil R 903
<<locked>>
97%
51735
86%
**30
100%
Rottweil R 907
<<locked>>
97%
49806
83%
**61
95%
SNPE Vectan SP 11 👍
<<locked>>
97%
53026
88%
**85
100%
SNPE Vectan SP 7
<<locked>>
90%
54027
90%
**26
98%
SNPE Vectan SP 9
<<locked>>
91%
53998
90%
**46
100%
SNPE Vectan Tubal 3000
<<locked>>
89%
53229
88%
**31
100%
SNPE Vectan Tubal 5000
<<locked>>
96%
54143
90%
**44
100%
SNPE Vectan Tubal 7000
<<locked>>
97%
47776
79%
**98
95%
Shooters World Long Rifle
<<locked>>
97%
47311
79%
**34
97%
Shooters World Match Rifle
<<locked>>
91%
53911
90%
**39
100%
Shooters World Precision
<<locked>>
94%
53751
89%
**26
100%
Somchem S321
<<locked>>
86%
53272
88%
**26
100%
Somchem S335
<<locked>>
90%
53461
89%
**44
100%
Somchem S341
<<locked>>
90%
54056
90%
**33
100%
Somchem S355
<<locked>>
97%
52011
86%
**23
100%
Somchem S365
<<locked>>
97%
37565
62%
**82
99%
Vihtavuori N130
<<locked>>
86%
53882
90%
**15
100%
Vihtavuori N133
<<locked>>
92%
53621
89%
**28
100%
Vihtavuori N135
<<locked>>
97%
49821
83%
**44
100%
Vihtavuori N140
<<locked>>
93%
54172
90%
**97
100%
Vihtavuori N150
<<locked>>
97%
44541
74%
**92
100%
Vihtavuori N160
<<locked>>
97%
46891
78%
**64
98%
Vihtavuori N530
<<locked>>
86%
53461
89%
**23
100%
Vihtavuori N540
<<locked>>
93%
53969
90%
**26
100%
Vihtavuori N550
<<locked>>
97%
46963
78%
**07
98%
[Vihtavuori N555]*
<<locked>>
97%
31575
52%
**60
94%
Winchester 6.5 StaBALL
<<locked>>
97%
45455
76%
**18
99%
Winchester 748
<<locked>>
86%
53447
89%
**59
100%
Winchester 760
<<locked>>
97%
50154
83%
**59
96%
Winchester StaBALL Match
<<locked>>
85%
54041
90%
**59
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
40364
67%
**29
98%
ADI AR 2208
<<locked>>
81%
34490
57%
**95
95%
Accurate 2015
<<locked>>
81%
46021
76%
**46
100%
Accurate 2200
<<locked>>
81%
42627
71%
**33
97%
Accurate 2230
<<locked>>
81%
48341
80%
**21
99%
Accurate 2460
<<locked>>
81%
48225
80%
**25
100%
Accurate 2495
<<locked>>
81%
40814
68%
**36
100%
Accurate 2520
<<locked>>
81%
41437
69%
**59
100%
[Accurate 2700]*
<<locked>>
85%
37101
62%
**95
90%
Accurate 4064
<<locked>>
81%
34490
57%
**34
100%
[Accurate 4350]*
<<locked>>
83%
26353
44%
**93
90%
Alliant AR-Comp
<<locked>>
81%
41901
70%
**43
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
33649
56%
**15
97%
Alliant Reloder-10x
<<locked>>
81%
49792
83%
**05
100%
Alliant Reloder-15
<<locked>>
81%
36216
60%
**67
96%
[Alliant Reloder-16]*
<<locked>>
83%
28384
47%
**10
90%
[Alliant Reloder-17]*
<<locked>>
81%
29080
48%
**62
93%
[Alliant Reloder-23]*
<<locked>>
91%
25701
43%
**67
90%
Baschieri & Pellagri 107
<<locked>>
81%
39146
65%
**26
96%
Hodgdon BL-C2
<<locked>>
81%
41292
69%
**79
99%
Hodgdon Benchmark
<<locked>>
81%
44759
74%
**43
100%
[Hodgdon CFE223]*
<<locked>>
81%
34301
57%
**57
94%
Hodgdon H322
<<locked>>
81%
45049
75%
**82
100%
[Hodgdon H380]*
<<locked>>
81%
33982
56%
**11
93%
[Hodgdon H414]*
<<locked>>
85%
34098
57%
**51
90%
[Hodgdon H4350]*
<<locked>>
93%
36622
61%
**47
90%
[Hodgdon Hybrid 100V]*
<<locked>>
81%
24062
40%
**75
90%
[Hodgdon LVR]*
<<locked>>
82%
29008
48%
**23
90%
[Hodgdon Superperformance]*
<<locked>>
91%
37913
63%
**36
90%
Hodgdon VARGET
<<locked>>
81%
34330
57%
**92
95%
IMR 3031
<<locked>>
81%
36289
60%
**80
100%
IMR 4064
<<locked>>
81%
33721
56%
**72
95%
[IMR 4166 Enduron]*
<<locked>>
81%
33953
56%
**36
90%
IMR 4198
<<locked>>
81%
50502
84%
**72
100%
[IMR 4350]*
<<locked>>
91%
36187
60%
**41
90%
[IMR 4451 Enduron]*
<<locked>>
83%
34330
57%
**78
90%
[IMR 4831]*
<<locked>>
87%
26513
44%
**73
90%
IMR 4895
<<locked>>
81%
36970
61%
**93
97%
IMR 8208 XBR
<<locked>>
81%
42438
71%
**39
99%
Lovex D073.4
<<locked>>
81%
49937
83%
**44
100%
Lovex D073.5
<<locked>>
81%
47659
79%
**18
100%
Lovex D073.6
<<locked>>
81%
38783
64%
**10
99%
Lovex S060
<<locked>>
81%
41176
68%
**80
98%
Lovex S062
<<locked>>
81%
35882
60%
**31
98%
[Lovex S065]*
<<locked>>
82%
29820
50%
**87
90%
[Lovex S070]*
<<locked>>
87%
33330
55%
**85
90%
Norma 201
<<locked>>
81%
39755
66%
**90
99%
Norma 202
<<locked>>
81%
39798
66%
**03
100%
Norma 203B
<<locked>>
81%
35462
59%
**54
96%
[Norma URP]*
<<locked>>
82%
27093
45%
**87
90%
Ramshot Big Game
<<locked>>
81%
34954
58%
**64
96%
[Ramshot Hunter]*
<<locked>>
89%
32300
54%
**11
90%
Ramshot TAC
<<locked>>
81%
42337
70%
**36
95%
Ramshot Wild Boar
<<locked>>
81%
41611
69%
**59
98%
Ramshot X-Terminator
<<locked>>
81%
45905
76%
**85
99%
ReloadSwiss RS 40
<<locked>>
81%
47732
79%
**18
100%
[ReloadSwiss RS 50]*
<<locked>>
81%
34664
58%
**98
91%
ReloadSwiss RS 52
<<locked>>
81%
33939
56%
**67
98%
[ReloadSwiss RS 60]*
<<locked>>
81%
28384
47%
**49
94%
[ReloadSwiss RS 62]*
<<locked>>
85%
28311
47%
**46
90%
[ReloadSwiss RS 70]*
<<locked>>
88%
32126
53%
**21
90%
Rottweil R 901
<<locked>>
81%
43656
73%
**39
100%
Rottweil R 902
<<locked>>
81%
37869
63%
**51
98%
Rottweil R 903
<<locked>>
81%
30951
51%
**62
96%
[Rottweil R 907]*
<<locked>>
86%
35926
60%
**08
90%
SNPE Vectan SP 11
<<locked>>
81%
32024
53%
**01
95%
SNPE Vectan SP 7
<<locked>>
81%
40437
67%
**13
96%
SNPE Vectan SP 9
<<locked>>
81%
38914
65%
**00
97%
SNPE Vectan Tubal 3000
<<locked>>
81%
41423
69%
**57
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
33968
56%
**36
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
86%
33054
55%
**46
90%
[Shooters World Long Rifle]*
<<locked>>
82%
29820
50%
**87
90%
Shooters World Match Rifle
<<locked>>
81%
38783
64%
**10
99%
Shooters World Precision
<<locked>>
81%
35882
60%
**31
98%
Somchem S321
<<locked>>
81%
45643
76%
**15
100%
Somchem S335
<<locked>>
81%
40944
68%
**60
100%
Somchem S341
<<locked>>
81%
39972
66%
**13
97%
Somchem S355
<<locked>>
81%
32039
53%
**75
96%
[Somchem S365]*
<<locked>>
81%
23018
38%
**95
91%
Vihtavuori N130
<<locked>>
81%
45890
76%
**06
100%
Vihtavuori N133
<<locked>>
81%
38740
64%
**15
100%
Vihtavuori N135
<<locked>>
81%
30995
52%
**29
100%
Vihtavuori N140
<<locked>>
81%
36854
61%
**34
100%
Vihtavuori N150
<<locked>>
81%
27108
45%
**41
95%
[Vihtavuori N160]*
<<locked>>
81%
28268
47%
**83
91%
Vihtavuori N530
<<locked>>
81%
44628
74%
**85
99%
Vihtavuori N540
<<locked>>
81%
36651
61%
**54
99%
[Vihtavuori N550]*
<<locked>>
81%
28195
47%
**19
91%
[Vihtavuori N555]*
<<locked>>
90%
25773
43%
**03
90%
[Winchester 6.5 StaBALL]*
<<locked>>
81%
27238
45%
**37
93%
Winchester 748
<<locked>>
81%
44759
74%
**31
100%
[Winchester 760]*
<<locked>>
85%
34098
57%
**51
90%
Winchester StaBALL Match
<<locked>>
81%
47485
79%
**67
99%

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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