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Load data for 9.3 x 66 Sako (370 Sako Mag) + .366 | 285gr | MEN SPRN

Recommended Powder(s): Alliant Reloder-17, Hodgdon CFE223, Ramshot Big Game, ReloadSwiss RS 60, SNPE Vectan SP 11

9.3 x 66 Sako (370 Sako Mag) + .366 | 285gr | MEN SPRN

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.366 | 285gr | MEN SPRN
Bullet Weight:
285gr | 18.5g
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_B3797_C1263
Last updated:
2025-01-01

Load data for 182 loads in caliber 9.3 x 66 Sako (370 Sako Mag) with .366 | 285gr | MEN SPRN bullet and 91 powders such as Alliant Reloder-17, Hodgdon CFE223, Ramshot Big Game, ReloadSwiss RS 60, 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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  • 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>>
88%
53359
89%
**41
100%
ADI AR 2208
<<locked>>
93%
53519
89%
**25
100%
Accurate 2015
<<locked>>
84%
53592
89%
**36
100%
Accurate 2200
<<locked>>
86%
54114
90%
**15
99%
Accurate 2495
<<locked>>
87%
53853
89%
**05
100%
Accurate 2520
<<locked>>
86%
53635
89%
**31
100%
Accurate 2700
<<locked>>
94%
53998
90%
**82
97%
[Accurate 3100]*
<<locked>>
97%
32750
54%
**49
93%
Accurate 4064
<<locked>>
93%
53940
90%
**28
100%
Accurate 4350
<<locked>>
97%
46369
77%
**08
99%
Alliant AR-Comp
<<locked>>
86%
53737
89%
**85
100%
Alliant Reloder- TS 15.5
<<locked>>
94%
53824
89%
**51
100%
Alliant Reloder-15
<<locked>>
91%
53316
89%
**54
100%
Alliant Reloder-16
<<locked>>
97%
45919
76%
**11
99%
Alliant Reloder-17 👍
<<locked>>
97%
52649
87%
**36
100%
[Alliant Reloder-19]*
<<locked>>
97%
39842
66%
**74
91%
Alliant Reloder-23
<<locked>>
97%
32097
53%
**72
96%
Alliant Reloder-26
<<locked>>
97%
35157
58%
**90
95%
Baschieri & Pellagri 107
<<locked>>
88%
53751
89%
**64
100%
Hodgdon BL-C2
<<locked>>
87%
53693
89%
**61
100%
Hodgdon Benchmark
<<locked>>
85%
53795
89%
**72
100%
Hodgdon CFE223 👍
<<locked>>
92%
53766
89%
**00
100%
Hodgdon H322
<<locked>>
84%
53534
89%
**95
100%
Hodgdon H380
<<locked>>
93%
53519
89%
**57
99%
Hodgdon H414
<<locked>>
96%
53505
89%
**07
98%
[Hodgdon H4350]*
<<locked>>
97%
43845
73%
**97
94%
Hodgdon Hybrid 100V
<<locked>>
97%
41872
70%
**06
99%
Hodgdon LVR
<<locked>>
97%
50589
84%
**51
99%
Hodgdon Superperformance
<<locked>>
97%
50024
83%
**70
96%
Hodgdon VARGET
<<locked>>
94%
53867
89%
**28
100%
IMR 3031
<<locked>>
91%
53751
89%
**34
100%
IMR 4064
<<locked>>
94%
53766
89%
**18
100%
IMR 4166 Enduron
<<locked>>
94%
53693
89%
**95
97%
IMR 4350
<<locked>>
97%
46499
77%
**43
95%
IMR 4451 Enduron
<<locked>>
96%
53548
89%
**25
97%
IMR 4831
<<locked>>
97%
39421
66%
**77
97%
IMR 4895
<<locked>>
91%
54099
90%
**77
100%
IMR 8208 XBR
<<locked>>
86%
53766
89%
**11
100%
Lovex D073.6
<<locked>>
89%
53867
89%
**31
100%
Lovex S060
<<locked>>
88%
53940
90%
**85
100%
Lovex S062
<<locked>>
92%
53737
89%
**21
100%
Lovex S065
<<locked>>
97%
50734
84%
**92
98%
Lovex S070
<<locked>>
97%
48530
81%
**79
97%
Norma 201
<<locked>>
89%
53577
89%
**05
100%
Norma 202
<<locked>>
89%
53809
89%
**08
100%
Norma 203B
<<locked>>
92%
54012
90%
**64
100%
[Norma 204]*
<<locked>>
97%
46543
77%
**72
94%
Norma URP
<<locked>>
97%
46122
77%
**98
99%
Ramshot Big Game 👍
<<locked>>
92%
54041
90%
**84
100%
Ramshot Hunter
<<locked>>
97%
44846
75%
**85
97%
Ramshot TAC
<<locked>>
86%
53505
89%
**18
99%
Ramshot Wild Boar
<<locked>>
87%
53621
89%
**51
100%
Ramshot X-Terminator
<<locked>>
84%
53896
90%
**05
100%
ReloadSwiss RS 50
<<locked>>
93%
53911
90%
**34
98%
ReloadSwiss RS 52
<<locked>>
92%
53592
89%
**87
100%
ReloadSwiss RS 60 👍
<<locked>>
97%
50952
85%
**33
100%
ReloadSwiss RS 62
<<locked>>
97%
45527
76%
**21
98%
ReloadSwiss RS 70
<<locked>>
97%
46427
77%
**44
98%
Rottweil R 901
<<locked>>
86%
53780
89%
**79
100%
Rottweil R 902
<<locked>>
91%
54041
90%
**08
100%
Rottweil R 903
<<locked>>
95%
53577
89%
**51
100%
Rottweil R 907
<<locked>>
97%
53272
89%
**21
97%
SNPE Vectan SP 11 👍
<<locked>>
94%
53272
89%
**87
100%
SNPE Vectan SP 7
<<locked>>
87%
54070
90%
**31
99%
SNPE Vectan SP 9
<<locked>>
89%
53853
89%
**41
100%
SNPE Vectan Tubal 3000
<<locked>>
88%
54056
90%
**36
100%
SNPE Vectan Tubal 5000
<<locked>>
94%
53534
89%
**36
100%
SNPE Vectan Tubal 7000
<<locked>>
97%
51474
86%
**59
97%
Shooters World Long Rifle
<<locked>>
97%
50734
84%
**92
98%
Shooters World Match Rifle
<<locked>>
89%
53867
89%
**31
100%
Shooters World Precision
<<locked>>
92%
53737
89%
**21
100%
Somchem S321
<<locked>>
84%
53882
90%
**28
100%
Somchem S335
<<locked>>
88%
53911
90%
**46
100%
Somchem S341
<<locked>>
88%
53998
90%
**28
100%
Somchem S355
<<locked>>
95%
53708
89%
**44
100%
Somchem S365
<<locked>>
97%
40756
68%
**49
100%
[Somchem S385]*
<<locked>>
97%
38305
64%
**41
93%
Vihtavuori N130
<<locked>>
84%
53911
90%
**06
100%
Vihtavuori N133
<<locked>>
90%
53911
90%
**26
100%
Vihtavuori N135
<<locked>>
97%
53635
89%
**82
100%
Vihtavuori N140
<<locked>>
91%
53867
89%
**88
100%
Vihtavuori N150
<<locked>>
97%
47993
80%
**46
100%
Vihtavuori N160
<<locked>>
97%
50749
84%
**28
99%
Vihtavuori N530
<<locked>>
85%
53635
89%
**18
100%
Vihtavuori N540
<<locked>>
91%
53896
90%
**15
100%
Vihtavuori N550
<<locked>>
97%
50879
85%
**67
99%
Vihtavuori N555
<<locked>>
97%
34505
57%
**41
96%
Winchester 6.5 StaBALL
<<locked>>
97%
48747
81%
**82
100%
Winchester 748
<<locked>>
84%
53417
89%
**48
100%
Winchester 760
<<locked>>
96%
53505
89%
**07
98%
[Winchester StaBALL HD]*
<<locked>>
97%
28674
48%
**36
94%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
43178
72%
**83
99%
ADI AR 2208
<<locked>>
81%
36854
61%
**56
97%
Accurate 2015
<<locked>>
81%
49124
82%
**80
100%
Accurate 2200
<<locked>>
81%
45426
75%
**87
98%
Accurate 2495
<<locked>>
81%
44266
74%
**83
100%
Accurate 2520
<<locked>>
81%
44802
74%
**10
100%
[Accurate 2700]*
<<locked>>
81%
35288
59%
**77
91%
[Accurate 3100]*
<<locked>>
92%
27978
46%
**37
90%
Accurate 4064
<<locked>>
81%
37420
62%
**92
100%
[Accurate 4350]*
<<locked>>
81%
26701
44%
**18
92%
Alliant AR-Comp
<<locked>>
81%
45353
75%
**80
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
36289
60%
**78
98%
Alliant Reloder-15
<<locked>>
81%
38928
65%
**28
98%
[Alliant Reloder-16]*
<<locked>>
81%
28224
47%
**34
92%
Alliant Reloder-17
<<locked>>
81%
31241
52%
**46
96%
[Alliant Reloder-19]*
<<locked>>
94%
36651
61%
**11
90%
[Alliant Reloder-23]*
<<locked>>
85%
23105
38%
**09
90%
[Alliant Reloder-26]*
<<locked>>
90%
28036
47%
**00
90%
Baschieri & Pellagri 107
<<locked>>
81%
42076
70%
**87
98%
Hodgdon BL-C2
<<locked>>
81%
44556
74%
**36
100%
Hodgdon Benchmark
<<locked>>
81%
47456
79%
**83
100%
Hodgdon CFE223
<<locked>>
81%
36912
61%
**28
97%
Hodgdon H322
<<locked>>
81%
48167
80%
**23
100%
Hodgdon H380
<<locked>>
81%
36622
61%
**78
96%
[Hodgdon H414]*
<<locked>>
81%
32169
53%
**23
91%
[Hodgdon H4350]*
<<locked>>
87%
33112
55%
**93
90%
[Hodgdon Hybrid 100V]*
<<locked>>
81%
25831
43%
**59
93%
[Hodgdon LVR]*
<<locked>>
81%
30356
50%
**77
93%
[Hodgdon Superperformance]*
<<locked>>
86%
33953
56%
**75
90%
Hodgdon VARGET
<<locked>>
81%
36680
61%
**52
97%
IMR 3031
<<locked>>
81%
39276
65%
**28
100%
IMR 4064
<<locked>>
81%
36071
60%
**33
97%
[IMR 4166 Enduron]*
<<locked>>
81%
36071
60%
**00
93%
[IMR 4350]*
<<locked>>
85%
32677
54%
**80
90%
[IMR 4451 Enduron]*
<<locked>>
81%
34142
57%
**90
92%
[IMR 4831]*
<<locked>>
81%
24149
40%
**23
90%
IMR 4895
<<locked>>
81%
39769
66%
**54
98%
IMR 8208 XBR
<<locked>>
81%
45266
75%
**90
100%
Lovex D073.6
<<locked>>
81%
41945
70%
**64
100%
Lovex S060
<<locked>>
81%
43685
73%
**31
99%
Lovex S062
<<locked>>
81%
38522
64%
**88
99%
[Lovex S065]*
<<locked>>
81%
31575
52%
**47
93%
[Lovex S070]*
<<locked>>
82%
30211
50%
**34
90%
Norma 201
<<locked>>
81%
42511
71%
**47
100%
Norma 202
<<locked>>
81%
42670
71%
**57
100%
Norma 203B
<<locked>>
81%
38174
63%
**18
98%
[Norma 204]*
<<locked>>
90%
37565
62%
**08
90%
[Norma URP]*
<<locked>>
81%
27978
46%
**31
92%
Ramshot Big Game
<<locked>>
81%
37637
63%
**31
98%
[Ramshot Hunter]*
<<locked>>
83%
29370
49%
**64
90%
Ramshot TAC
<<locked>>
81%
45150
75%
**93
97%
Ramshot Wild Boar
<<locked>>
81%
44643
74%
**16
99%
Ramshot X-Terminator
<<locked>>
81%
48849
81%
**33
99%
[ReloadSwiss RS 50]*
<<locked>>
81%
37188
62%
**65
94%
ReloadSwiss RS 52
<<locked>>
81%
36796
61%
**28
99%
ReloadSwiss RS 60
<<locked>>
81%
30443
51%
**33
97%
[ReloadSwiss RS 62]*
<<locked>>
81%
27079
45%
**31
91%
[ReloadSwiss RS 70]*
<<locked>>
82%
28805
48%
**57
90%
Rottweil R 901
<<locked>>
81%
46528
77%
**80
100%
Rottweil R 902
<<locked>>
81%
40509
67%
**05
99%
Rottweil R 903
<<locked>>
81%
33591
56%
**33
98%
[Rottweil R 907]*
<<locked>>
81%
32634
54%
**57
90%
SNPE Vectan SP 11
<<locked>>
81%
34461
57%
**72
97%
SNPE Vectan SP 7
<<locked>>
81%
43410
72%
**74
97%
SNPE Vectan SP 9
<<locked>>
81%
41698
69%
**57
99%
SNPE Vectan Tubal 3000
<<locked>>
81%
44048
73%
**05
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
36303
60%
**90
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
81%
30139
50%
**95
90%
[Shooters World Long Rifle]*
<<locked>>
81%
31575
52%
**47
93%
Shooters World Match Rifle
<<locked>>
81%
41945
70%
**64
100%
Shooters World Precision
<<locked>>
81%
38522
64%
**88
99%
Somchem S321
<<locked>>
81%
48863
81%
**62
100%
Somchem S335
<<locked>>
81%
43613
72%
**08
100%
Somchem S341
<<locked>>
81%
42960
71%
**70
99%
Somchem S355
<<locked>>
81%
34548
57%
**39
98%
[Somchem S365]*
<<locked>>
81%
24787
41%
**78
94%
[Somchem S385]*
<<locked>>
92%
32561
54%
**26
90%
Vihtavuori N130
<<locked>>
81%
48689
81%
**44
100%
Vihtavuori N133
<<locked>>
81%
41292
69%
**59
100%
Vihtavuori N135
<<locked>>
81%
33504
56%
**83
100%
Vihtavuori N140
<<locked>>
81%
39552
66%
**85
100%
Vihtavuori N150
<<locked>>
81%
29269
49%
**08
97%
[Vihtavuori N160]*
<<locked>>
81%
30414
51%
**60
93%
Vihtavuori N530
<<locked>>
81%
47688
79%
**39
100%
Vihtavuori N540
<<locked>>
81%
39334
65%
**05
100%
[Vihtavuori N550]*
<<locked>>
81%
30458
51%
**96
94%
[Vihtavuori N555]*
<<locked>>
85%
23627
39%
**62
90%
Winchester 6.5 StaBALL
<<locked>>
81%
29109
48%
**14
95%
Winchester 748
<<locked>>
81%
48225
80%
**82
100%
[Winchester 760]*
<<locked>>
81%
32169
53%
**23
91%
[Winchester StaBALL HD]*
<<locked>>
92%
24555
41%
**95
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

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