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Load data for .300 Win. Mag. + .308 | 200gr | Speer TBBC

Recommended Powder(s): Alliant Reloder-26, Hodgdon H4350, Norma 204, Norma MRP, Somchem S385

.300 Win. Mag. + .308 | 200gr | Speer TBBC

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.308 | 200gr | Speer TBBC
Manufacturer SKU:
1770
Bullet Weight:
200gr | 13.0g
Bullet Diameter:
0.308" | 7.82mm
Bullet Length:
1.370" | 34.8mm
Caliber:
.300 Win. Mag. load data
Case Length (l3):
2.620" | 66.5mm
Cartridge Length (C.O.L.):
3.290" | 83.6mm
Seated Depth:
0.700" | 17.8mm
Shank Seated Depth:
0.700" | 17.8mm
Case Capacity:
90.5 Grains of Water | 5.88 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
62366 psi | 4300 bar
LID:
LID_B6177_C380
Last updated:
2025-01-01

Load data for 144 loads in caliber .300 Win. Mag. with .308 | 200gr | Speer TBBC bullet and 72 powders such as Alliant Reloder-26, Hodgdon H4350, Norma 204, Norma MRP, Somchem S385. 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".

  • Muzzle velocity vs. barrel length

    Every 1 inch additional barrel length increases muzzle velocity by approx. 30.3 fps

  • 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.

    .

    Loading_icon.gif

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 2208
<<locked>>
84%
55999
90%
**67
100%
ADI AR 2209
<<locked>>
94%
55303
89%
**56
99%
ADI AR 2213
<<locked>>
97%
54346
87%
**79
98%
[ADI AR 2217]*
<<locked>>
97%
39784
64%
**97
94%
ADI AR 2225
<<locked>>
97%
35520
57%
**67
96%
Accurate 2700
<<locked>>
85%
56057
90%
**44
99%
Accurate 3100
<<locked>>
97%
54476
87%
**00
100%
Accurate 4350
<<locked>>
89%
56086
90%
**30
100%
Accurate MAGPRO
<<locked>>
97%
53447
86%
**85
96%
Alliant Reloder-16
<<locked>>
90%
55825
90%
**72
100%
Alliant Reloder-17
<<locked>>
86%
55782
89%
**66
100%
Alliant Reloder-19
<<locked>>
94%
55361
89%
**59
99%
Alliant Reloder-22
<<locked>>
97%
53940
86%
**76
99%
Alliant Reloder-23
<<locked>>
97%
51445
82%
**07
100%
Alliant Reloder-25
<<locked>>
97%
44121
71%
**38
100%
Alliant Reloder-26 👍
<<locked>>
95%
55985
90%
**54
100%
[Hodgdon H1000]*
<<locked>>
97%
39784
64%
**97
94%
Hodgdon H414
<<locked>>
85%
56014
90%
**56
100%
Hodgdon H4350 👍
<<locked>>
92%
56014
90%
**07
100%
Hodgdon H4831
<<locked>>
97%
50212
81%
**57
97%
Hodgdon H4831 SC
<<locked>>
96%
55564
89%
**40
98%
Hodgdon Hybrid 100V
<<locked>>
92%
55956
90%
**97
100%
Hodgdon LVR
<<locked>>
87%
55564
89%
**30
100%
Hodgdon Retumbo
<<locked>>
97%
35520
57%
**67
96%
Hodgdon Superperformance
<<locked>>
88%
56101
90%
**89
100%
Hodgdon VARGET
<<locked>>
84%
55593
89%
**64
100%
IMR 4064
<<locked>>
84%
55811
89%
**54
100%
IMR 4166 Enduron
<<locked>>
85%
55927
90%
**61
100%
IMR 4350
<<locked>>
90%
55579
89%
**00
100%
IMR 4451 Enduron
<<locked>>
86%
55695
89%
**84
100%
IMR 4831
<<locked>>
94%
56101
90%
**20
100%
IMR 4955 Enduron
<<locked>>
97%
55259
89%
**00
98%
IMR 7828 SSC
<<locked>>
97%
55419
89%
**12
98%
Lovex S065
<<locked>>
88%
55564
89%
**77
100%
Lovex S070
<<locked>>
89%
55724
89%
**97
100%
Lovex S071
<<locked>>
97%
45165
72%
**56
99%
Norma 204 👍
<<locked>>
90%
55724
89%
**36
99%
[Norma 217]*
<<locked>>
97%
31502
51%
**85
93%
Norma MRP 👍
<<locked>>
96%
55245
89%
**28
100%
Norma URP
<<locked>>
89%
55506
89%
**30
100%
Ramshot Hunter
<<locked>>
90%
55680
89%
**56
100%
Ramshot Magnum
<<locked>>
97%
52779
85%
**43
99%
ReloadSwiss RS 14
<<locked>>
96%
35969
58%
**77
100%
ReloadSwiss RS 60
<<locked>>
87%
56043
90%
**92
100%
ReloadSwiss RS 62
<<locked>>
89%
55999
90%
**53
100%
ReloadSwiss RS 70
<<locked>>
90%
55550
89%
**99
100%
ReloadSwiss RS 76
<<locked>>
97%
43134
69%
**71
99%
[ReloadSwiss RS 80]*
<<locked>>
97%
38899
62%
**62
92%
Rottweil R 903
<<locked>>
84%
55477
89%
**67
100%
Rottweil R 904
<<locked>>
93%
55651
89%
**13
98%
Rottweil R 905
<<locked>>
95%
55782
89%
**62
99%
Rottweil R 907
<<locked>>
87%
55550
89%
**77
100%
SNPE Vectan SP 11
<<locked>>
83%
55767
89%
**03
100%
SNPE Vectan Tubal 5000
<<locked>>
84%
55579
89%
**43
100%
SNPE Vectan Tubal 7000
<<locked>>
88%
55608
89%
**38
100%
Shooters World Long Rifle
<<locked>>
88%
55564
89%
**77
100%
Somchem S355
<<locked>>
85%
56043
90%
**71
100%
Somchem S361
<<locked>>
92%
55767
89%
**87
98%
Somchem S365
<<locked>>
91%
55506
89%
**30
100%
Somchem S385 👍
<<locked>>
95%
55985
90%
**33
100%
Vihtavuori N135
<<locked>>
85%
55622
89%
**75
100%
Vihtavuori N150
<<locked>>
89%
55535
89%
**25
100%
Vihtavuori N160
<<locked>>
87%
55782
89%
**94
100%
Vihtavuori N165
<<locked>>
97%
50038
80%
**28
99%
Vihtavuori N550
<<locked>>
87%
55970
90%
**36
100%
Vihtavuori N555
<<locked>>
96%
55898
90%
**59
100%
Vihtavuori N560
<<locked>>
97%
53635
86%
**95
98%
Vihtavuori N565
<<locked>>
97%
46383
74%
**54
96%
[Vihtavuori N568]*
<<locked>>
97%
40161
64%
**62
92%
Winchester 6.5 StaBALL
<<locked>>
89%
55970
90%
**74
100%
Winchester 760
<<locked>>
85%
56014
90%
**56
100%
Winchester StaBALL HD
<<locked>>
97%
46934
75%
**72
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2208
<<locked>>
81%
51576
83%
**02
100%
[ADI AR 2209]*
<<locked>>
81%
36216
58%
**05
94%
[ADI AR 2213]*
<<locked>>
81%
32387
52%
**26
90%
[ADI AR 2217]*
<<locked>>
91%
32764
53%
**23
90%
[ADI AR 2225]*
<<locked>>
88%
26963
43%
**11
90%
Accurate 2700
<<locked>>
81%
49908
80%
**46
99%
Accurate 3100
<<locked>>
81%
31966
51%
**80
96%
Accurate 4350
<<locked>>
81%
43250
69%
**26
100%
[Accurate MAGPRO]*
<<locked>>
86%
35911
58%
**38
90%
Alliant Reloder-16
<<locked>>
81%
41278
66%
**30
100%
Alliant Reloder-17
<<locked>>
81%
47587
76%
**54
100%
[Alliant Reloder-19]*
<<locked>>
81%
36013
58%
**95
94%
[Alliant Reloder-22]*
<<locked>>
81%
31894
51%
**36
93%
Alliant Reloder-23
<<locked>>
81%
30748
49%
**10
99%
[Alliant Reloder-25]*
<<locked>>
81%
27006
43%
**18
94%
Alliant Reloder-26
<<locked>>
81%
33011
53%
**28
98%
[Hodgdon H1000]*
<<locked>>
91%
32764
53%
**23
90%
Hodgdon H414
<<locked>>
81%
48878
78%
**41
99%
Hodgdon H4350
<<locked>>
81%
40030
64%
**25
97%
[Hodgdon H4831]*
<<locked>>
83%
32866
53%
**00
90%
[Hodgdon H4831 SC]*
<<locked>>
81%
33808
54%
**20
91%
Hodgdon Hybrid 100V
<<locked>>
81%
39073
63%
**28
100%
Hodgdon LVR
<<locked>>
81%
45542
73%
**72
100%
[Hodgdon Retumbo]*
<<locked>>
88%
26963
43%
**11
90%
Hodgdon Superperformance
<<locked>>
81%
43903
70%
**92
98%
Hodgdon VARGET
<<locked>>
81%
51343
82%
**98
100%
IMR 4064
<<locked>>
81%
50734
81%
**79
100%
IMR 4166 Enduron
<<locked>>
81%
49516
79%
**62
99%
IMR 4350
<<locked>>
81%
41989
67%
**67
98%
IMR 4451 Enduron
<<locked>>
81%
48066
77%
**59
99%
IMR 4831
<<locked>>
81%
37260
60%
**05
99%
[IMR 4955 Enduron]*
<<locked>>
81%
34519
55%
**03
91%
[IMR 7828 SSC]*
<<locked>>
81%
32837
53%
**49
91%
Lovex S065
<<locked>>
81%
45368
73%
**10
99%
Lovex S070
<<locked>>
81%
43671
70%
**03
99%
[Lovex S071]*
<<locked>>
81%
27702
44%
**72
94%
Norma 204
<<locked>>
81%
41597
67%
**97
96%
[Norma 217]*
<<locked>>
92%
27209
44%
**54
90%
Norma MRP
<<locked>>
81%
33098
53%
**98
95%
Norma URP
<<locked>>
81%
42380
68%
**13
100%
Ramshot Hunter
<<locked>>
81%
41220
66%
**13
99%
[Ramshot Magnum]*
<<locked>>
81%
29443
47%
**64
92%
ReloadSwiss RS 14
<<locked>>
93%
34098
55%
**44
100%
ReloadSwiss RS 60
<<locked>>
81%
45876
74%
**44
100%
ReloadSwiss RS 62
<<locked>>
81%
42873
69%
**46
100%
ReloadSwiss RS 70
<<locked>>
81%
41394
66%
**66
99%
[ReloadSwiss RS 76]*
<<locked>>
83%
27470
44%
**47
90%
[ReloadSwiss RS 80]*
<<locked>>
94%
34809
56%
**61
90%
Rottweil R 903
<<locked>>
81%
50314
81%
**92
100%
[Rottweil R 904]*
<<locked>>
81%
37797
61%
**85
94%
[Rottweil R 905]*
<<locked>>
81%
35317
57%
**79
94%
Rottweil R 907
<<locked>>
81%
46499
75%
**30
98%
SNPE Vectan SP 11
<<locked>>
81%
51416
82%
**48
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
51010
82%
**87
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
44657
72%
**64
99%
Shooters World Long Rifle
<<locked>>
81%
45368
73%
**10
99%
Somchem S355
<<locked>>
81%
50241
81%
**85
100%
[Somchem S361]*
<<locked>>
81%
38334
61%
**82
93%
Somchem S365
<<locked>>
81%
39146
63%
**80
100%
Somchem S385
<<locked>>
81%
35868
58%
**69
96%
Vihtavuori N135
<<locked>>
81%
48878
78%
**84
100%
Vihtavuori N150
<<locked>>
81%
43294
69%
**44
100%
Vihtavuori N160
<<locked>>
81%
45716
73%
**39
100%
[Vihtavuori N165]*
<<locked>>
81%
30124
48%
**24
92%
Vihtavuori N550
<<locked>>
81%
46340
74%
**85
100%
Vihtavuori N555
<<locked>>
81%
34374
55%
**82
99%
[Vihtavuori N560]*
<<locked>>
81%
32605
52%
**59
90%
[Vihtavuori N565]*
<<locked>>
86%
31618
51%
**39
90%
[Vihtavuori N568]*
<<locked>>
94%
36390
58%
**77
90%
Winchester 6.5 StaBALL
<<locked>>
81%
42975
69%
**84
100%
Winchester 760
<<locked>>
81%
48878
78%
**41
99%
Winchester StaBALL HD
<<locked>>
81%
24990
40%
**06
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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