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

Recommended Powder(s): Hodgdon CFE223, IMR 4895, Ramshot Big Game, ReloadSwiss RS 52, SNPE Vectan SP 11

9.3 x 66 Sako (370 Sako Mag) + .366 | 285gr | Sellier & Bellot SPRN

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.366 | 285gr | Sellier & Bellot SPRN
Manufacturer SKU:
2952
Bullet Weight:
285gr | 18.5g
Bullet Diameter:
0.366" | 9.30mm
Bullet Length:
1.220" | 31.0mm
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:
0.520" | 13.2mm
Shank Seated Depth:
0.520" | 13.2mm
Case Capacity:
81.0 Grains of Water | 5.26 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
60191 psi | 4150 bar
LID:
LID_B7258_C1263
Last updated:
2025-01-01

Load data for 190 loads in caliber 9.3 x 66 Sako (370 Sako Mag) with .366 | 285gr | Sellier & Bellot SPRN bullet and 95 powders such as Hodgdon CFE223, 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".

  • 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.

    .

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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>>
90%
53809
89%
**05
100%
ADI AR 2208
<<locked>>
96%
53809
89%
**92
99%
Accurate 2015
<<locked>>
86%
53316
89%
**03
100%
Accurate 2200
<<locked>>
88%
53534
89%
**65
99%
Accurate 2230
<<locked>>
85%
54012
90%
**65
100%
Accurate 2460
<<locked>>
85%
54143
90%
**72
100%
Accurate 2495
<<locked>>
90%
53359
89%
**75
100%
Accurate 2520
<<locked>>
89%
53838
89%
**98
100%
Accurate 2700
<<locked>>
97%
53969
90%
**36
96%
Accurate 4064
<<locked>>
96%
54070
90%
**02
100%
Accurate 4350
<<locked>>
97%
41452
69%
**97
97%
Alliant AR-Comp
<<locked>>
89%
53563
89%
**56
100%
Alliant Reloder- TS 15.5
<<locked>>
96%
53447
89%
**18
100%
Alliant Reloder-10x
<<locked>>
84%
53519
89%
**13
100%
Alliant Reloder-15
<<locked>>
94%
53809
89%
**25
100%
Alliant Reloder-16
<<locked>>
97%
42235
70%
**10
97%
Alliant Reloder-17
<<locked>>
97%
47747
79%
**31
100%
[Alliant Reloder-23]*
<<locked>>
97%
29646
49%
**70
94%
Baschieri & Pellagri 107
<<locked>>
91%
53708
89%
**25
99%
Hodgdon BL-C2
<<locked>>
89%
54099
90%
**34
100%
Hodgdon Benchmark
<<locked>>
88%
53983
90%
**33
100%
Hodgdon CFE223 👍
<<locked>>
95%
53940
90%
**67
99%
Hodgdon H322
<<locked>>
87%
53548
89%
**62
100%
Hodgdon H380
<<locked>>
96%
54056
90%
**21
99%
Hodgdon H414
<<locked>>
97%
49226
82%
**05
96%
[Hodgdon H4350]*
<<locked>>
97%
40828
68%
**08
93%
Hodgdon Hybrid 100V
<<locked>>
97%
38087
63%
**01
98%
Hodgdon LVR
<<locked>>
97%
46108
77%
**52
97%
[Hodgdon Superperformance]*
<<locked>>
97%
45440
76%
**52
94%
Hodgdon VARGET
<<locked>>
96%
53432
89%
**85
99%
IMR 3031
<<locked>>
94%
53896
90%
**08
100%
IMR 4064
<<locked>>
97%
53650
89%
**79
99%
IMR 4166 Enduron
<<locked>>
97%
53417
89%
**49
97%
IMR 4198
<<locked>>
83%
53505
89%
**67
100%
[IMR 4350]*
<<locked>>
97%
43207
72%
**51
93%
IMR 4451 Enduron
<<locked>>
97%
50763
84%
**43
96%
IMR 4831
<<locked>>
97%
35375
59%
**69
95%
IMR 4895 👍
<<locked>>
93%
53432
89%
**28
100%
IMR 8208 XBR
<<locked>>
89%
53969
90%
**79
100%
Lovex D073.4
<<locked>>
84%
54172
90%
**59
100%
Lovex D073.5
<<locked>>
85%
53693
89%
**62
100%
Lovex D073.6
<<locked>>
91%
53838
89%
**98
100%
Lovex S060
<<locked>>
90%
53621
89%
**36
100%
Lovex S062
<<locked>>
95%
54143
90%
**92
100%
Lovex S065
<<locked>>
97%
46876
78%
**97
97%
Lovex S070
<<locked>>
97%
44150
73%
**74
95%
Norma 201
<<locked>>
91%
53606
89%
**75
100%
Norma 202
<<locked>>
91%
54128
90%
**82
100%
Norma 203B
<<locked>>
94%
53577
89%
**28
100%
[Norma 204]*
<<locked>>
97%
43526
72%
**77
91%
Norma URP
<<locked>>
97%
41843
70%
**90
97%
Ramshot Big Game 👍
<<locked>>
94%
54143
90%
**54
100%
Ramshot Hunter
<<locked>>
97%
41437
69%
**87
95%
Ramshot TAC
<<locked>>
88%
53490
89%
**82
98%
Ramshot Wild Boar
<<locked>>
89%
54085
90%
**18
100%
Ramshot X-Terminator
<<locked>>
86%
53751
89%
**65
100%
ReloadSwiss RS 40
<<locked>>
85%
53388
89%
**59
100%
ReloadSwiss RS 50
<<locked>>
95%
53621
89%
**92
97%
ReloadSwiss RS 52 👍
<<locked>>
95%
53882
90%
**57
100%
ReloadSwiss RS 60
<<locked>>
97%
46485
77%
**21
100%
ReloadSwiss RS 62
<<locked>>
97%
41292
69%
**13
97%
ReloadSwiss RS 70
<<locked>>
97%
42540
71%
**26
96%
Rottweil R 901
<<locked>>
88%
53693
89%
**43
100%
Rottweil R 902
<<locked>>
93%
53287
89%
**59
100%
Rottweil R 903
<<locked>>
97%
50807
84%
**82
100%
Rottweil R 907
<<locked>>
97%
49081
82%
**16
95%
SNPE Vectan SP 11 👍
<<locked>>
97%
53142
88%
**41
100%
SNPE Vectan SP 7
<<locked>>
90%
54099
90%
**88
99%
SNPE Vectan SP 9
<<locked>>
91%
53272
89%
**95
100%
SNPE Vectan Tubal 3000
<<locked>>
90%
53722
89%
**00
100%
SNPE Vectan Tubal 5000
<<locked>>
96%
53708
89%
**03
100%
SNPE Vectan Tubal 7000
<<locked>>
97%
47021
78%
**60
95%
Shooters World Long Rifle
<<locked>>
97%
46876
78%
**97
97%
Shooters World Match Rifle
<<locked>>
91%
53838
89%
**98
100%
Shooters World Precision
<<locked>>
95%
54143
90%
**92
100%
Shooters World Tactical Rifle
<<locked>>
83%
53954
90%
**43
100%
Somchem S321
<<locked>>
86%
53751
89%
**95
100%
Somchem S335
<<locked>>
91%
54143
90%
**16
100%
Somchem S341
<<locked>>
90%
53214
88%
**85
100%
Somchem S355
<<locked>>
97%
51692
86%
**85
100%
Somchem S365
<<locked>>
97%
37434
62%
**54
99%
Vihtavuori N130
<<locked>>
86%
53490
89%
**67
100%
Vihtavuori N133
<<locked>>
93%
53954
90%
**93
100%
Vihtavuori N135
<<locked>>
96%
49095
82%
**00
100%
Vihtavuori N140
<<locked>>
93%
53838
89%
**56
100%
Vihtavuori N150
<<locked>>
97%
43903
73%
**51
100%
Vihtavuori N160
<<locked>>
97%
46093
77%
**23
98%
Vihtavuori N530
<<locked>>
87%
53766
89%
**82
100%
Vihtavuori N540
<<locked>>
93%
53824
89%
**82
100%
Vihtavuori N550
<<locked>>
97%
45963
76%
**59
98%
[Vihtavuori N555]*
<<locked>>
97%
31140
52%
**33
94%
Winchester 6.5 StaBALL
<<locked>>
97%
44991
75%
**87
99%
Winchester 748
<<locked>>
87%
53592
89%
**21
100%
Winchester 760
<<locked>>
97%
49226
82%
**05
96%
Winchester StaBALL Match
<<locked>>
85%
54143
90%
**21
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
40074
67%
**98
98%
ADI AR 2208
<<locked>>
81%
34214
57%
**70
95%
Accurate 2015
<<locked>>
81%
45600
76%
**08
100%
Accurate 2200
<<locked>>
81%
42206
70%
**98
97%
Accurate 2230
<<locked>>
81%
47572
79%
**80
100%
Accurate 2460
<<locked>>
81%
47543
79%
**87
100%
Accurate 2495
<<locked>>
81%
40277
67%
**98
100%
Accurate 2520
<<locked>>
81%
40814
68%
**21
100%
[Accurate 2700]*
<<locked>>
84%
35636
59%
**47
90%
Accurate 4064
<<locked>>
81%
33895
56%
**00
100%
[Accurate 4350]*
<<locked>>
82%
25048
42%
**49
90%
Alliant AR-Comp
<<locked>>
81%
41452
69%
**01
100%
Alliant Reloder- TS 15.5
<<locked>>
81%
33185
55%
**90
97%
Alliant Reloder-10x
<<locked>>
81%
49385
82%
**64
100%
Alliant Reloder-15
<<locked>>
81%
35795
59%
**39
96%
[Alliant Reloder-16]*
<<locked>>
82%
27137
45%
**65
90%
[Alliant Reloder-17]*
<<locked>>
81%
28747
48%
**44
94%
[Alliant Reloder-23]*
<<locked>>
90%
24569
41%
**23
90%
Baschieri & Pellagri 107
<<locked>>
81%
38870
65%
**92
96%
Hodgdon BL-C2
<<locked>>
81%
40857
68%
**41
99%
Hodgdon Benchmark
<<locked>>
81%
44280
74%
**05
100%
Hodgdon CFE223
<<locked>>
81%
34069
57%
**33
95%
Hodgdon H322
<<locked>>
81%
44831
74%
**44
100%
[Hodgdon H380]*
<<locked>>
81%
33533
56%
**83
94%
[Hodgdon H414]*
<<locked>>
84%
32953
55%
**06
90%
[Hodgdon H4350]*
<<locked>>
92%
35157
58%
**00
90%
[Hodgdon Hybrid 100V]*
<<locked>>
81%
23946
40%
**70
91%
[Hodgdon LVR]*
<<locked>>
81%
28036
47%
**82
90%
[Hodgdon Superperformance]*
<<locked>>
90%
36579
61%
**85
90%
Hodgdon VARGET
<<locked>>
81%
33895
56%
**64
95%
IMR 3031
<<locked>>
81%
36071
60%
**52
100%
IMR 4064
<<locked>>
81%
33504
56%
**51
96%
[IMR 4166 Enduron]*
<<locked>>
81%
33663
56%
**18
91%
IMR 4198
<<locked>>
81%
50314
84%
**31
100%
[IMR 4350]*
<<locked>>
89%
34505
57%
**87
90%
[IMR 4451 Enduron]*
<<locked>>
82%
33243
55%
**37
90%
[IMR 4831]*
<<locked>>
86%
25324
42%
**32
90%
IMR 4895
<<locked>>
81%
36535
61%
**62
97%
IMR 8208 XBR
<<locked>>
81%
42134
70%
**08
99%
Lovex D073.4
<<locked>>
81%
49298
82%
**00
100%
Lovex D073.5
<<locked>>
81%
47297
79%
**77
100%
Lovex D073.6
<<locked>>
81%
38348
64%
**78
100%
Lovex S060
<<locked>>
81%
40582
67%
**42
98%
Lovex S062
<<locked>>
81%
35273
59%
**00
98%
[Lovex S065]*
<<locked>>
81%
29066
48%
**59
90%
[Lovex S070]*
<<locked>>
86%
31966
53%
**41
90%
Norma 201
<<locked>>
81%
39320
65%
**62
99%
Norma 202
<<locked>>
81%
39291
65%
**72
100%
Norma 203B
<<locked>>
81%
35172
58%
**29
97%
[Norma 204]*
<<locked>>
95%
40118
67%
**18
90%
[Norma URP]*
<<locked>>
82%
26121
43%
**49
90%
Ramshot Big Game
<<locked>>
81%
34577
57%
**36
96%
[Ramshot Hunter]*
<<locked>>
88%
31169
52%
**70
90%
Ramshot TAC
<<locked>>
81%
42119
70%
**08
96%
Ramshot Wild Boar
<<locked>>
81%
40901
68%
**24
98%
Ramshot X-Terminator
<<locked>>
81%
45498
76%
**44
99%
ReloadSwiss RS 40
<<locked>>
81%
47152
78%
**77
100%
[ReloadSwiss RS 50]*
<<locked>>
81%
34301
57%
**73
92%
ReloadSwiss RS 52
<<locked>>
81%
33605
56%
**39
98%
[ReloadSwiss RS 60]*
<<locked>>
81%
27949
46%
**28
94%
[ReloadSwiss RS 62]*
<<locked>>
84%
27122
45%
**01
90%
[ReloadSwiss RS 70]*
<<locked>>
87%
30893
51%
**73
90%
Rottweil R 901
<<locked>>
81%
43178
72%
**01
100%
Rottweil R 902
<<locked>>
81%
37260
62%
**16
98%
Rottweil R 903
<<locked>>
81%
30560
51%
**41
96%
[Rottweil R 907]*
<<locked>>
85%
34287
57%
**60
90%
SNPE Vectan SP 11
<<locked>>
81%
31749
53%
**77
95%
SNPE Vectan SP 7
<<locked>>
81%
40118
67%
**85
96%
SNPE Vectan SP 9
<<locked>>
81%
38580
64%
**72
98%
SNPE Vectan Tubal 3000
<<locked>>
81%
40915
68%
**26
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
33475
56%
**11
100%
[SNPE Vectan Tubal 7000]*
<<locked>>
85%
31618
53%
**98
90%
[Shooters World Long Rifle]*
<<locked>>
81%
29066
48%
**59
90%
Shooters World Match Rifle
<<locked>>
81%
38348
64%
**78
100%
Shooters World Precision
<<locked>>
81%
35273
59%
**00
98%
Shooters World Tactical Rifle
<<locked>>
81%
49966
83%
**90
100%
Somchem S321
<<locked>>
81%
45339
75%
**77
100%
Somchem S335
<<locked>>
81%
40379
67%
**29
100%
Somchem S341
<<locked>>
81%
39682
66%
**85
98%
Somchem S355
<<locked>>
81%
31662
53%
**47
96%
[Somchem S365]*
<<locked>>
81%
22800
38%
**86
92%
Vihtavuori N130
<<locked>>
81%
45716
76%
**75
100%
Vihtavuori N133
<<locked>>
81%
38667
64%
**90
100%
Vihtavuori N135
<<locked>>
81%
30821
51%
**11
100%
Vihtavuori N140
<<locked>>
81%
36782
61%
**10
100%
Vihtavuori N150
<<locked>>
81%
26948
45%
**29
96%
[Vihtavuori N160]*
<<locked>>
81%
27905
46%
**65
91%
Vihtavuori N530
<<locked>>
81%
44396
74%
**54
100%
Vihtavuori N540
<<locked>>
81%
36361
60%
**29
100%
[Vihtavuori N550]*
<<locked>>
81%
27804
46%
**01
91%
[Vihtavuori N555]*
<<locked>>
89%
24758
41%
**69
90%
[Winchester 6.5 StaBALL]*
<<locked>>
81%
27093
45%
**23
93%
Winchester 748
<<locked>>
81%
44251
74%
**90
100%
[Winchester 760]*
<<locked>>
84%
32953
55%
**06
90%
Winchester StaBALL Match
<<locked>>
81%
47007
78%
**26
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.

<<locked>>... you need to buy an access license to unlock the data

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