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Load data for .300 Weath. Mag. + .308 | 200gr | Speer Grand Slam

Recommended Powder(s):

.300 Weath. Mag. + .308 | 200gr | Speer Grand Slam

Load Specifications

(Use the Personalized Load Calculator below to adjust )

Bullet:
.308 | 200gr | Speer Grand Slam
Manufacturer SKU:
2212
Bullet Weight:
200gr | 13.0g
Bullet Diameter:
0.308" | 7.82mm
Bullet Length:
<<locked>>
Caliber:
.300 Weath. Mag. load data
Case Length (l3):
2.824" | 71.7mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
Case Capacity:
98.9 Grains of Water | 6.42 cm³
Primer Size:
Large Rifle Magnum (LRM)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B6175_C379
Last updated:
2026-01-21

Load data for 138 loads in caliber .300 Weath. Mag. with .308 | 200gr | Speer Grand Slam bullet and 69 powder(s). 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 2209
<<locked>>
91%
56985
89%
**38
100%
ADI AR 2213
<<locked>>
94%
56942
89%
**74
99%
ADI AR 2217
<<locked>>
97%
46166
72%
**90
98%
ADI AR 2225
<<locked>>
97%
40944
64%
**44
99%
Accurate 3100
<<locked>>
94%
56811
89%
**72
100%
Accurate 4350
<<locked>>
85%
56985
89%
**89
100%
Accurate MAGPRO
<<locked>>
94%
56724
89%
**77
98%
Alliant Reloder-16
<<locked>>
87%
56869
89%
**22
100%
Alliant Reloder-19
<<locked>>
91%
57174
90%
**31
100%
Alliant Reloder-22 👍
<<locked>>
94%
57014
89%
**71
100%
Alliant Reloder-23
<<locked>>
95%
56782
89%
**15
100%
Alliant Reloder-25
<<locked>>
97%
51909
81%
**15
100%
Alliant Reloder-26
<<locked>>
91%
57305
90%
**04
100%
[Alliant Reloder-33]*
<<locked>>
97%
42177
66%
**67
92%
Baschieri & Pellagri 109
<<locked>>
95%
57159
90%
**15
97%
Bofors RP15 👍
<<locked>>
97%
57029
89%
**64
100%
Bofors RP30
<<locked>>
97%
48022
75%
**46
98%
Bofors RP5 👍
<<locked>>
94%
57014
89%
**71
100%
Bofors RP7
<<locked>>
84%
57043
89%
**53
100%
Hodgdon H1000
<<locked>>
97%
46166
72%
**90
98%
Hodgdon H4350
<<locked>>
89%
56666
89%
**69
100%
Hodgdon H4831
<<locked>>
96%
56927
89%
**18
99%
Hodgdon H4831 SC
<<locked>>
93%
57290
90%
**18
99%
Hodgdon Hybrid 100V
<<locked>>
88%
56768
89%
**43
100%
Hodgdon LVR
<<locked>>
84%
57072
89%
**95
100%
Hodgdon Retumbo
<<locked>>
97%
40944
64%
**44
99%
Hodgdon Superperformance
<<locked>>
84%
57305
90%
**48
100%
Hodgdon TrailBoss
<<locked>>
97%
35621
56%
**03
100%
IMR 4350
<<locked>>
87%
56666
89%
**69
100%
IMR 4451 Enduron
<<locked>>
83%
56797
89%
**56
100%
IMR 4831
<<locked>>
90%
57000
89%
**72
100%
IMR 4955 Enduron
<<locked>>
94%
57276
90%
**89
99%
IMR 7828 SSC
<<locked>>
93%
56927
89%
**81
99%
[IMR 7977 Enduron]*
<<locked>>
97%
54375
85%
**94
92%
IMR 8133 Enduron
<<locked>>
97%
36941
58%
**49
95%
Lovex S065
<<locked>>
85%
56782
89%
**43
100%
Lovex S070
<<locked>>
86%
57145
90%
**66
100%
Lovex S071
<<locked>>
97%
52707
83%
**13
100%
Norma 204
<<locked>>
87%
57072
89%
**08
100%
Norma 217
<<locked>>
97%
36782
58%
**72
97%
Norma MRP 👍
<<locked>>
92%
57014
89%
**94
100%
Norma URP
<<locked>>
86%
57217
90%
**92
100%
Ramshot Grand 👍
<<locked>>
91%
56855
89%
**97
99%
Ramshot Hunter
<<locked>>
87%
57130
90%
**18
100%
Ramshot Magnum
<<locked>>
94%
56811
89%
**44
100%
ReloadSwiss RS 14
<<locked>>
96%
36390
57%
**42
100%
ReloadSwiss RS 62
<<locked>>
85%
57087
89%
**08
100%
ReloadSwiss RS 70
<<locked>>
86%
56724
89%
**58
100%
ReloadSwiss RS 76
<<locked>>
97%
50749
80%
**61
100%
ReloadSwiss RS 80
<<locked>>
97%
46296
73%
**56
96%
Rottweil R 904
<<locked>>
90%
56666
89%
**82
99%
Rottweil R 905
<<locked>>
92%
57305
90%
**35
100%
Rottweil R 907
<<locked>>
84%
57043
89%
**53
100%
SNPE Vectan Tubal 7000
<<locked>>
85%
57217
90%
**17
100%
Shooters World Long Rifle
<<locked>>
85%
56782
89%
**43
100%
Somchem S361
<<locked>>
90%
57203
90%
**66
99%
Somchem S365
<<locked>>
88%
56956
89%
**85
100%
Somchem S385
<<locked>>
91%
56927
89%
**89
100%
Vihtavuori N150
<<locked>>
87%
57232
90%
**94
100%
Vihtavuori N160
<<locked>>
84%
56884
89%
**53
100%
Vihtavuori N165
<<locked>>
97%
57421
90%
**82
100%
Vihtavuori N550
<<locked>>
84%
56898
89%
**89
100%
Vihtavuori N555
<<locked>>
92%
56898
89%
**08
100%
Vihtavuori N560
<<locked>>
94%
57145
90%
**97
99%
Vihtavuori N565
<<locked>>
97%
54128
85%
**25
99%
Vihtavuori N568
<<locked>>
97%
47543
74%
**66
96%
[Vihtavuori N570]*
<<locked>>
97%
45165
71%
**40
93%
Winchester 6.5 StaBALL
<<locked>>
85%
56942
89%
**23
100%
Winchester StaBALL HD
<<locked>>
96%
57101
89%
**27
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2209
<<locked>>
81%
41104
64%
**56
97%
[ADI AR 2213]*
<<locked>>
81%
36608
57%
**77
94%
[ADI AR 2217]*
<<locked>>
84%
30211
47%
**03
90%
[ADI AR 2225]*
<<locked>>
82%
25367
40%
**01
90%
Accurate 3100
<<locked>>
81%
37043
58%
**31
98%
Accurate 4350
<<locked>>
81%
49530
78%
**80
100%
[Accurate MAGPRO]*
<<locked>>
81%
35781
56%
**77
91%
Alliant Reloder-16
<<locked>>
81%
47166
74%
**77
100%
Alliant Reloder-19
<<locked>>
81%
41205
65%
**52
97%
Alliant Reloder-22
<<locked>>
81%
36796
58%
**93
96%
Alliant Reloder-23
<<locked>>
81%
35476
56%
**54
100%
Alliant Reloder-25
<<locked>>
81%
30661
48%
**69
97%
Alliant Reloder-26
<<locked>>
81%
39044
61%
**95
100%
[Alliant Reloder-33]*
<<locked>>
94%
38276
60%
**75
90%
[Baschieri & Pellagri 109]*
<<locked>>
82%
37536
59%
**31
90%
Bofors RP15
<<locked>>
81%
34272
54%
**31
95%
[Bofors RP30]*
<<locked>>
81%
28558
45%
**00
90%
Bofors RP5
<<locked>>
81%
36796
58%
**93
96%
Bofors RP7
<<locked>>
81%
51837
81%
**74
100%
[Hodgdon H1000]*
<<locked>>
84%
30211
47%
**03
90%
Hodgdon H4350
<<locked>>
81%
44672
70%
**62
99%
[Hodgdon H4831]*
<<locked>>
81%
34403
54%
**82
92%
[Hodgdon H4831 SC]*
<<locked>>
81%
38392
60%
**74
94%
Hodgdon Hybrid 100V
<<locked>>
81%
44759
70%
**62
100%
Hodgdon LVR
<<locked>>
81%
51619
81%
**10
100%
[Hodgdon Retumbo]*
<<locked>>
82%
25367
40%
**01
90%
Hodgdon Superperformance
<<locked>>
81%
50633
79%
**49
100%
Hodgdon TrailBoss
<<locked>>
90%
32445
51%
**44
100%
IMR 4350
<<locked>>
81%
46862
73%
**08
99%
IMR 4451 Enduron
<<locked>>
81%
52968
83%
**94
100%
IMR 4831
<<locked>>
81%
42424
66%
**39
100%
[IMR 4955 Enduron]*
<<locked>>
81%
38609
61%
**51
94%
[IMR 7828 SSC]*
<<locked>>
81%
37492
59%
**16
94%
[IMR 7977 Enduron]*
<<locked>>
93%
48008
75%
**89
90%
[IMR 8133 Enduron]*
<<locked>>
90%
29530
46%
**49
90%
Lovex S065
<<locked>>
81%
50546
79%
**44
100%
Lovex S070
<<locked>>
81%
48878
77%
**38
100%
Lovex S071
<<locked>>
81%
31705
50%
**10
97%
Norma 204
<<locked>>
81%
47369
74%
**54
98%
[Norma 217]*
<<locked>>
86%
25686
40%
**44
90%
Norma MRP
<<locked>>
81%
38450
60%
**56
98%
Norma URP
<<locked>>
81%
48312
76%
**57
100%
Ramshot Grand
<<locked>>
81%
38928
61%
**56
95%
Ramshot Hunter
<<locked>>
81%
47079
74%
**61
100%
Ramshot Magnum
<<locked>>
81%
34040
53%
**28
96%
ReloadSwiss RS 14
<<locked>>
87%
31647
50%
**47
100%
ReloadSwiss RS 62
<<locked>>
81%
49255
77%
**94
100%
ReloadSwiss RS 70
<<locked>>
81%
47514
74%
**10
100%
[ReloadSwiss RS 76]*
<<locked>>
81%
29008
45%
**52
93%
[ReloadSwiss RS 80]*
<<locked>>
87%
32372
51%
**34
90%
Rottweil R 904
<<locked>>
81%
42395
66%
**30
96%
Rottweil R 905
<<locked>>
81%
40379
63%
**39
97%
Rottweil R 907
<<locked>>
81%
51837
81%
**74
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
49545
78%
**95
100%
Shooters World Long Rifle
<<locked>>
81%
50546
79%
**44
100%
Somchem S361
<<locked>>
81%
43178
68%
**26
96%
Somchem S365
<<locked>>
81%
45194
71%
**15
100%
Somchem S385
<<locked>>
81%
40959
64%
**16
98%
Vihtavuori N150
<<locked>>
81%
48254
76%
**62
100%
Vihtavuori N160
<<locked>>
81%
51677
81%
**74
100%
Vihtavuori N165
<<locked>>
81%
34592
54%
**75
96%
Vihtavuori N550
<<locked>>
81%
52388
82%
**26
100%
Vihtavuori N555
<<locked>>
81%
39784
62%
**33
100%
[Vihtavuori N560]*
<<locked>>
81%
36840
58%
**03
93%
[Vihtavuori N565]*
<<locked>>
81%
31604
50%
**62
91%
[Vihtavuori N568]*
<<locked>>
87%
33576
53%
**51
90%
[Vihtavuori N570]*
<<locked>>
93%
39363
62%
**18
90%
Winchester 6.5 StaBALL
<<locked>>
81%
48675
76%
**08
100%
Winchester StaBALL HD
<<locked>>
81%
31502
49%
**87
100%

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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