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

Recommended Powder(s):

.300 Win. 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 Win. Mag. load data
Case Length (l3):
2.620" | 66.5mm
Cartridge Length (C.O.L.):
<<locked>>
Seated Depth:
<<locked>>
Shank Seated Depth:
<<locked>>
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_B6175_C380
Last updated:
2026-01-21

Load data for 150 loads in caliber .300 Win. Mag. with .308 | 200gr | Speer Grand Slam bullet and 75 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>>
93%
55796
89%
**79
99%
ADI AR 2213
<<locked>>
97%
56014
90%
**25
99%
ADI AR 2217
<<locked>>
97%
40988
66%
**39
95%
ADI AR 2225
<<locked>>
97%
36550
59%
**03
97%
Accurate 2700
<<locked>>
83%
55550
89%
**51
100%
Accurate 3100
<<locked>>
96%
55463
89%
**26
100%
Accurate 4350
<<locked>>
88%
55869
90%
**36
100%
Accurate MAGPRO
<<locked>>
97%
54897
88%
**18
97%
Alliant Reloder-16
<<locked>>
89%
55680
89%
**76
100%
Alliant Reloder-17
<<locked>>
85%
55811
89%
**76
100%
Alliant Reloder-19 👍
<<locked>>
94%
55666
89%
**76
99%
Alliant Reloder-22
<<locked>>
97%
55622
89%
**15
99%
Alliant Reloder-23
<<locked>>
97%
53069
85%
**36
100%
Alliant Reloder-25
<<locked>>
97%
46151
74%
**87
100%
Alliant Reloder-26 👍
<<locked>>
94%
55811
89%
**61
100%
Baschieri & Pellagri 109
<<locked>>
97%
54853
88%
**33
95%
Bofors RP15
<<locked>>
97%
51097
82%
**46
99%
Bofors RP30
<<locked>>
97%
42090
67%
**18
96%
Bofors RP5
<<locked>>
97%
55622
89%
**15
99%
Bofors RP7
<<locked>>
86%
55259
89%
**90
100%
Hodgdon H1000
<<locked>>
97%
40988
66%
**39
95%
Hodgdon H414
<<locked>>
84%
55883
90%
**69
100%
Hodgdon H4350
<<locked>>
91%
56014
90%
**20
100%
Hodgdon H4831
<<locked>>
97%
52156
84%
**97
97%
Hodgdon H4831 SC
<<locked>>
95%
55579
89%
**53
98%
Hodgdon Hybrid 100V
<<locked>>
91%
55637
89%
**97
100%
Hodgdon LVR
<<locked>>
86%
55956
90%
**43
100%
Hodgdon Retumbo
<<locked>>
97%
36550
59%
**03
97%
Hodgdon Superperformance
<<locked>>
87%
55912
90%
**99
100%
Hodgdon VARGET
<<locked>>
83%
56072
90%
**84
100%
IMR 4064
<<locked>>
83%
55622
89%
**67
100%
IMR 4166 Enduron
<<locked>>
84%
55550
89%
**67
100%
IMR 4350
<<locked>>
89%
55999
90%
**17
100%
IMR 4451 Enduron
<<locked>>
85%
55854
90%
**97
100%
IMR 4831
<<locked>>
93%
55651
89%
**20
100%
IMR 4955 Enduron
<<locked>>
96%
55811
89%
**20
98%
IMR 7828 SSC
<<locked>>
96%
55506
89%
**22
99%
Lovex S065
<<locked>>
87%
55782
89%
**87
100%
Lovex S070
<<locked>>
88%
55564
89%
**10
100%
Lovex S071
<<locked>>
97%
47239
76%
**02
100%
Norma 204
<<locked>>
89%
56101
90%
**56
99%
[Norma 217]*
<<locked>>
97%
32285
52%
**18
94%
Norma MRP 👍
<<locked>>
95%
56043
90%
**51
100%
Norma URP
<<locked>>
89%
56115
90%
**46
100%
Ramshot Grand
<<locked>>
94%
55564
89%
**31
99%
Ramshot Hunter
<<locked>>
89%
55376
89%
**59
100%
Ramshot Magnum
<<locked>>
97%
54984
88%
**89
100%
ReloadSwiss RS 14
<<locked>>
96%
35694
57%
**86
100%
ReloadSwiss RS 62
<<locked>>
88%
55666
89%
**62
100%
ReloadSwiss RS 70
<<locked>>
89%
56043
90%
**15
100%
ReloadSwiss RS 76
<<locked>>
97%
44672
72%
**17
99%
[ReloadSwiss RS 80]*
<<locked>>
97%
40103
64%
**95
93%
Rottweil R 903
<<locked>>
83%
55521
89%
**77
100%
Rottweil R 904
<<locked>>
92%
55477
89%
**23
98%
Rottweil R 905 👍
<<locked>>
94%
56086
90%
**82
99%
Rottweil R 907
<<locked>>
86%
55259
89%
**90
100%
SNPE Vectan Tubal 5000
<<locked>>
83%
55811
89%
**59
100%
SNPE Vectan Tubal 7000
<<locked>>
87%
56043
90%
**57
100%
Shooters World Long Rifle
<<locked>>
87%
55782
89%
**87
100%
Somchem S355
<<locked>>
83%
55738
89%
**77
100%
Somchem S361
<<locked>>
92%
55593
89%
**97
98%
Somchem S365
<<locked>>
91%
56101
90%
**49
100%
Somchem S385
<<locked>>
94%
56101
90%
**43
100%
Vihtavuori N135
<<locked>>
85%
55854
90%
**85
100%
Vihtavuori N150
<<locked>>
89%
56043
90%
**44
100%
Vihtavuori N160
<<locked>>
86%
55376
89%
**00
100%
Vihtavuori N165
<<locked>>
97%
51663
83%
**71
99%
Vihtavuori N550
<<locked>>
86%
55883
90%
**49
100%
Vihtavuori N555
<<locked>>
95%
56057
90%
**69
100%
Vihtavuori N560
<<locked>>
96%
55434
89%
**38
98%
Vihtavuori N565
<<locked>>
97%
47964
77%
**97
97%
[Vihtavuori N568]*
<<locked>>
97%
41814
67%
**18
93%
Winchester 6.5 StaBALL
<<locked>>
88%
56028
90%
**84
100%
Winchester 760
<<locked>>
84%
55883
90%
**69
100%
Winchester StaBALL HD
<<locked>>
97%
49052
79%
**05
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2209
<<locked>>
81%
37289
60%
**34
95%
[ADI AR 2213]*
<<locked>>
81%
33243
53%
**56
91%
[ADI AR 2217]*
<<locked>>
89%
31633
51%
**13
90%
[ADI AR 2225]*
<<locked>>
87%
26774
43%
**15
90%
Accurate 2700
<<locked>>
81%
51285
82%
**82
99%
Accurate 3100
<<locked>>
81%
32996
53%
**16
97%
Accurate 4350
<<locked>>
81%
44541
71%
**59
100%
[Accurate MAGPRO]*
<<locked>>
84%
35375
57%
**41
90%
Alliant Reloder-16
<<locked>>
81%
42830
69%
**75
100%
Alliant Reloder-17
<<locked>>
81%
49168
79%
**84
100%
Alliant Reloder-19
<<locked>>
81%
37217
60%
**34
95%
[Alliant Reloder-22]*
<<locked>>
81%
32996
53%
**75
93%
Alliant Reloder-23
<<locked>>
81%
31618
51%
**46
99%
[Alliant Reloder-25]*
<<locked>>
81%
27760
45%
**51
94%
Alliant Reloder-26
<<locked>>
81%
34243
55%
**70
98%
[Baschieri & Pellagri 109]*
<<locked>>
87%
40089
64%
**48
90%
[Bofors RP15]*
<<locked>>
81%
30850
49%
**16
92%
[Bofors RP30]*
<<locked>>
86%
29530
47%
**06
90%
[Bofors RP5]*
<<locked>>
81%
32996
53%
**75
93%
Bofors RP7
<<locked>>
81%
47776
77%
**69
99%
[Hodgdon H1000]*
<<locked>>
89%
31633
51%
**13
90%
Hodgdon H414
<<locked>>
81%
50212
81%
**77
99%
Hodgdon H4350
<<locked>>
81%
40828
65%
**57
97%
[Hodgdon H4831]*
<<locked>>
82%
32285
52%
**97
90%
[Hodgdon H4831 SC]*
<<locked>>
81%
34824
56%
**59
92%
Hodgdon Hybrid 100V
<<locked>>
81%
40205
64%
**57
100%
Hodgdon LVR
<<locked>>
81%
47021
75%
**08
100%
[Hodgdon Retumbo]*
<<locked>>
87%
26774
43%
**15
90%
Hodgdon Superperformance
<<locked>>
81%
45484
73%
**28
99%
Hodgdon VARGET
<<locked>>
81%
52547
84%
**28
100%
IMR 4064
<<locked>>
81%
52112
84%
**18
100%
IMR 4166 Enduron
<<locked>>
81%
50676
81%
**95
99%
IMR 4350
<<locked>>
81%
43134
69%
**03
98%
IMR 4451 Enduron
<<locked>>
81%
49066
79%
**95
99%
IMR 4831
<<locked>>
81%
38392
62%
**38
99%
[IMR 4955 Enduron]*
<<locked>>
81%
35201
56%
**39
92%
[IMR 7828 SSC]*
<<locked>>
81%
33866
54%
**88
92%
Lovex S065
<<locked>>
81%
46441
74%
**39
100%
Lovex S070
<<locked>>
81%
44904
72%
**33
99%
Lovex S071
<<locked>>
81%
28398
46%
**01
95%
Norma 204
<<locked>>
81%
42627
68%
**30
97%
[Norma 217]*
<<locked>>
91%
26861
43%
**60
90%
Norma MRP
<<locked>>
81%
34403
55%
**41
96%
Norma URP
<<locked>>
81%
43888
70%
**52
100%
[Ramshot Grand]*
<<locked>>
81%
34751
56%
**25
93%
Ramshot Hunter
<<locked>>
81%
42438
68%
**46
99%
[Ramshot Magnum]*
<<locked>>
81%
30124
48%
**90
93%
ReloadSwiss RS 14
<<locked>>
91%
33388
54%
**44
100%
ReloadSwiss RS 62
<<locked>>
81%
44266
71%
**75
100%
ReloadSwiss RS 70
<<locked>>
81%
42554
68%
**92
100%
[ReloadSwiss RS 76]*
<<locked>>
82%
26919
43%
**44
90%
[ReloadSwiss RS 80]*
<<locked>>
92%
34069
55%
**51
90%
Rottweil R 903
<<locked>>
81%
51808
83%
**25
100%
[Rottweil R 904]*
<<locked>>
81%
38522
62%
**18
94%
Rottweil R 905
<<locked>>
81%
36419
58%
**18
95%
Rottweil R 907
<<locked>>
81%
47776
77%
**69
99%
SNPE Vectan Tubal 5000
<<locked>>
81%
52301
84%
**13
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
45803
73%
**97
99%
Shooters World Long Rifle
<<locked>>
81%
46441
74%
**39
100%
Somchem S355
<<locked>>
81%
51459
83%
**18
100%
[Somchem S361]*
<<locked>>
81%
39247
63%
**08
94%
Somchem S365
<<locked>>
81%
40495
65%
**13
100%
Somchem S385
<<locked>>
81%
37057
59%
**05
96%
Vihtavuori N135
<<locked>>
81%
50067
80%
**16
100%
Vihtavuori N150
<<locked>>
81%
44469
71%
**74
100%
Vihtavuori N160
<<locked>>
81%
47195
76%
**75
100%
[Vihtavuori N165]*
<<locked>>
81%
31038
50%
**60
93%
Vihtavuori N550
<<locked>>
81%
47558
76%
**15
100%
Vihtavuori N555
<<locked>>
81%
35433
57%
**18
99%
[Vihtavuori N560]*
<<locked>>
81%
33040
53%
**85
91%
[Vihtavuori N565]*
<<locked>>
84%
31140
50%
**29
90%
[Vihtavuori N568]*
<<locked>>
92%
35636
57%
**77
90%
Winchester 6.5 StaBALL
<<locked>>
81%
44150
71%
**16
100%
Winchester 760
<<locked>>
81%
50212
81%
**77
99%
Winchester StaBALL HD
<<locked>>
81%
26237
42%
**39
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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