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Load data for .300 RCM + .308 | 200gr | Sierra HP MatchKing L1.29

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Recommended Powder(s): Alliant Reloder-16, Hodgdon H414, ReloadSwiss RS 62, ReloadSwiss RS 70, Winchester 760

.300 RCM + .308 | 200gr | Sierra HP MatchKing L1.29

Load Specifications

Bullet:
.308 | 200gr | Sierra HP MatchKing L1.29
Manufacturer SKU:
2230
Bullet Weight:
200gr | 13.0g
Bullet Diameter:
0.308" | 7.82mm
Bullet Length:
1.391" | 35.3mm
Caliber:
.300 RCM load data
Case Length (l3):
2.090" | 53.1mm
Cartridge Length (C.O.L.):
2.797" | 71.1mm
Seated Depth:
0.684" | 17.4mm
Shank Seated Depth:
0.444" | 11.3mm
Case Capacity:
75.0 Grains of Water | 4.87 cm³
Primer Size:
Large Rifle (LR)
Max. allowed Pressure:
63817 psi | 4400 bar
LID:
LID_B5901_C371
Last updated:
2025-01-01
Recommended Twist Rate:
1:12 - 1:10

>> Use the Personalized Load Calculator further below to adjust input parameters. 

Load data for 186 loads in caliber .300 RCM with .308 | 200gr | Sierra HP MatchKing L1.29 bullet and 93 powders such as Alliant Reloder-16, Hodgdon H414, ReloadSwiss RS 62, ReloadSwiss RS 70, Winchester 760. 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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  • .

    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.

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>>
85%
57159
90%
**21
100%
ADI AR 2208
<<locked>>
90%
57319
90%
**08
100%
ADI AR 2209
<<locked>>
97%
48791
76%
**66
96%
[ADI AR 2213]*
<<locked>>
97%
43236
68%
**90
93%
Accurate 2200
<<locked>>
83%
56840
89%
**89
100%
Accurate 2495
<<locked>>
83%
57072
89%
**52
100%
Accurate 2700
<<locked>>
91%
56536
89%
**62
99%
Accurate 3100
<<locked>>
97%
41582
65%
**34
98%
Accurate 4064
<<locked>>
88%
57014
89%
**82
100%
Accurate 4350
<<locked>>
96%
56753
89%
**74
100%
Alliant Reloder- TS 15.5
<<locked>>
90%
56652
89%
**15
100%
Alliant Reloder-15
<<locked>>
87%
56623
89%
**31
100%
Alliant Reloder-16 👍
<<locked>>
97%
54882
86%
**87
100%
Alliant Reloder-17
<<locked>>
93%
56855
89%
**26
100%
Alliant Reloder-19
<<locked>>
97%
47964
75%
**59
96%
Alliant Reloder-22
<<locked>>
97%
41626
65%
**93
95%
Alliant Reloder-23
<<locked>>
97%
39334
62%
**57
100%
Alliant Reloder-25
<<locked>>
97%
35041
55%
**72
96%
Alliant Reloder-26
<<locked>>
97%
43874
69%
**08
99%
Baschieri & Pellagri 107
<<locked>>
85%
57188
90%
**44
100%
Hodgdon CFE223
<<locked>>
88%
57000
89%
**74
100%
Hodgdon H380
<<locked>>
89%
56536
89%
**28
100%
Hodgdon H414 👍
<<locked>>
92%
56826
89%
**94
99%
Hodgdon H4350
<<locked>>
97%
52605
82%
**72
98%
[Hodgdon H4831 SC]*
<<locked>>
97%
45469
71%
**84
93%
Hodgdon Hybrid 100V
<<locked>>
97%
51619
81%
**75
100%
Hodgdon LVR
<<locked>>
95%
57232
90%
**77
100%
Hodgdon Superperformance
<<locked>>
95%
56884
89%
**23
99%
Hodgdon VARGET
<<locked>>
90%
56985
89%
**05
100%
IMR 3031
<<locked>>
87%
56681
89%
**82
100%
IMR 4064
<<locked>>
90%
56681
89%
**89
100%
IMR 4166 Enduron
<<locked>>
91%
57305
90%
**92
99%
IMR 4350
<<locked>>
97%
56362
88%
**25
99%
IMR 4451 Enduron
<<locked>>
93%
57145
90%
**18
99%
IMR 4831
<<locked>>
96%
48051
75%
**39
100%
IMR 4895
<<locked>>
87%
57087
89%
**44
100%
[IMR 4955 Enduron]*
<<locked>>
97%
45556
71%
**54
94%
[IMR 7828 SSC]*
<<locked>>
97%
44541
70%
**33
94%
IMR 8208 XBR
<<locked>>
83%
56608
89%
**79
100%
Lovex D073.6
<<locked>>
84%
57029
89%
**89
100%
Lovex S060
<<locked>>
85%
56637
89%
**52
100%
Lovex S062
<<locked>>
88%
56753
89%
**85
100%
Lovex S065
<<locked>>
95%
57246
90%
**18
100%
Lovex S070
<<locked>>
96%
56869
89%
**38
99%
Lovex S071
<<locked>>
97%
34447
54%
**97
95%
Norma 201
<<locked>>
85%
56724
89%
**75
100%
Norma 202
<<locked>>
85%
57377
90%
**72
100%
Norma 203B
<<locked>>
88%
56782
89%
**28
100%
Norma 204
<<locked>>
97%
57000
89%
**77
98%
Norma MRP
<<locked>>
97%
43700
68%
**66
97%
Norma URP
<<locked>>
97%
56043
88%
**71
100%
Ramshot Big Game
<<locked>>
87%
56666
89%
**51
100%
Ramshot Hunter
<<locked>>
97%
55419
87%
**77
100%
Ramshot Magnum
<<locked>>
97%
40466
63%
**48
95%
Ramshot Wild Boar
<<locked>>
83%
57319
90%
**25
100%
ReloadSwiss RS 50
<<locked>>
89%
57217
90%
**18
100%
ReloadSwiss RS 52
<<locked>>
88%
57116
89%
**51
100%
ReloadSwiss RS 60
<<locked>>
94%
56826
89%
**46
100%
ReloadSwiss RS 62 👍
<<locked>>
97%
57261
90%
**10
100%
ReloadSwiss RS 70 👍
<<locked>>
97%
56681
89%
**46
100%
Rottweil R 902
<<locked>>
87%
57000
89%
**72
100%
Rottweil R 903
<<locked>>
91%
56579
89%
**15
100%
Rottweil R 904
<<locked>>
97%
50198
79%
**39
96%
Rottweil R 905
<<locked>>
97%
46224
72%
**39
96%
Rottweil R 907
<<locked>>
94%
57392
90%
**18
99%
SNPE Vectan SP 11
<<locked>>
91%
57246
90%
**64
100%
SNPE Vectan SP 7
<<locked>>
84%
56739
89%
**02
100%
SNPE Vectan SP 9
<<locked>>
86%
57101
89%
**12
100%
SNPE Vectan Tubal 3000
<<locked>>
85%
57319
90%
**00
100%
SNPE Vectan Tubal 5000
<<locked>>
90%
57000
89%
**93
100%
SNPE Vectan Tubal 7000
<<locked>>
95%
57217
90%
**75
99%
Shooters World Long Rifle
<<locked>>
95%
57246
90%
**18
100%
Shooters World Match Rifle
<<locked>>
84%
57029
89%
**89
100%
Shooters World Precision
<<locked>>
88%
56753
89%
**85
100%
Somchem S335
<<locked>>
85%
57406
90%
**10
100%
Somchem S341
<<locked>>
84%
57305
90%
**98
100%
Somchem S355
<<locked>>
91%
56695
89%
**12
100%
Somchem S361
<<locked>>
97%
52156
82%
**39
95%
Somchem S365
<<locked>>
97%
51285
80%
**25
100%
Somchem S385
<<locked>>
97%
47094
74%
**23
97%
Vihtavuori N133
<<locked>>
87%
56942
89%
**80
100%
Vihtavuori N135
<<locked>>
93%
56869
89%
**30
100%
Vihtavuori N140
<<locked>>
87%
56637
89%
**39
100%
Vihtavuori N150
<<locked>>
97%
57290
90%
**79
100%
Vihtavuori N160
<<locked>>
94%
57232
90%
**41
100%
Vihtavuori N165
<<locked>>
97%
39363
62%
**72
95%
Vihtavuori N540
<<locked>>
87%
56739
89%
**75
100%
Vihtavuori N550
<<locked>>
94%
56840
89%
**77
100%
Vihtavuori N555
<<locked>>
97%
43700
68%
**26
100%
[Vihtavuori N560]*
<<locked>>
97%
42032
66%
**03
92%
Winchester 6.5 StaBALL
<<locked>>
96%
56840
89%
**15
100%
Winchester 760 👍
<<locked>>
92%
56826
89%
**94
99%
Winchester StaBALL HD
<<locked>>
97%
35447
56%
**84
100%

Max Load - Barrel Length: 23.60''

Powder
Charge
FR
MaxP
%
V(0)
z
ADI AR 2206H
<<locked>>
81%
50778
80%
**26
100%
ADI AR 2208
<<locked>>
81%
43207
68%
**92
99%
[ADI AR 2209]*
<<locked>>
84%
32561
51%
**38
90%
[ADI AR 2213]*
<<locked>>
92%
37043
58%
**62
90%
Accurate 2200
<<locked>>
81%
53040
83%
**39
100%
Accurate 2495
<<locked>>
81%
53098
83%
**07
100%
Accurate 2700
<<locked>>
81%
41249
65%
**23
96%
[Accurate 3100]*
<<locked>>
81%
24381
38%
**44
90%
Accurate 4064
<<locked>>
81%
44991
71%
**18
100%
Accurate 4350
<<locked>>
81%
33649
53%
**83
97%
Alliant Reloder- TS 15.5
<<locked>>
81%
43192
68%
**15
100%
Alliant Reloder-15
<<locked>>
81%
46180
72%
**80
100%
Alliant Reloder-16
<<locked>>
81%
33504
53%
**97
97%
Alliant Reloder-17
<<locked>>
81%
37608
59%
**15
100%
[Alliant Reloder-19]*
<<locked>>
83%
31285
49%
**15
90%
[Alliant Reloder-22]*
<<locked>>
88%
31386
49%
**60
90%
[Alliant Reloder-23]*
<<locked>>
81%
24294
38%
**73
94%
[Alliant Reloder-25]*
<<locked>>
87%
26208
41%
**19
90%
[Alliant Reloder-26]*
<<locked>>
81%
25541
40%
**49
91%
Baschieri & Pellagri 107
<<locked>>
81%
50096
79%
**39
100%
Hodgdon CFE223
<<locked>>
81%
45020
71%
**00
99%
Hodgdon H380
<<locked>>
81%
44048
69%
**38
99%
Hodgdon H414
<<locked>>
81%
39015
61%
**98
96%
[Hodgdon H4350]*
<<locked>>
81%
32605
51%
**98
92%
[Hodgdon H4831 SC]*
<<locked>>
91%
37623
59%
**36
90%
Hodgdon Hybrid 100V
<<locked>>
81%
30937
48%
**05
98%
Hodgdon LVR
<<locked>>
81%
36680
57%
**36
97%
[Hodgdon Superperformance]*
<<locked>>
81%
34795
55%
**26
93%
Hodgdon VARGET
<<locked>>
81%
42917
67%
**88
99%
IMR 3031
<<locked>>
81%
47355
74%
**61
100%
IMR 4064
<<locked>>
81%
42540
67%
**79
99%
IMR 4166 Enduron
<<locked>>
81%
41945
66%
**46
97%
[IMR 4350]*
<<locked>>
81%
34229
54%
**38
93%
IMR 4451 Enduron
<<locked>>
81%
39871
62%
**36
96%
IMR 4831
<<locked>>
81%
29530
46%
**72
95%
IMR 4895
<<locked>>
81%
47427
74%
**07
100%
[IMR 4955 Enduron]*
<<locked>>
90%
36767
58%
**90
90%
[IMR 7828 SSC]*
<<locked>>
91%
36941
58%
**69
90%
IMR 8208 XBR
<<locked>>
81%
53055
83%
**30
100%
Lovex D073.6
<<locked>>
81%
50357
79%
**07
100%
Lovex S060
<<locked>>
81%
50430
79%
**64
100%
Lovex S062
<<locked>>
81%
45614
71%
**25
100%
Lovex S065
<<locked>>
81%
37260
58%
**90
97%
Lovex S070
<<locked>>
81%
35621
56%
**70
95%
[Lovex S071]*
<<locked>>
86%
24540
38%
**44
90%
Norma 201
<<locked>>
81%
49617
78%
**80
100%
Norma 202
<<locked>>
81%
50256
79%
**84
100%
Norma 203B
<<locked>>
81%
45687
72%
**70
100%
[Norma 204]*
<<locked>>
81%
33489
52%
**51
91%
[Norma MRP]*
<<locked>>
84%
28747
45%
**18
90%
Norma URP
<<locked>>
81%
33852
53%
**87
97%
Ramshot Big Game
<<locked>>
81%
45542
71%
**87
100%
Ramshot Hunter
<<locked>>
81%
32953
52%
**74
95%
[Ramshot Magnum]*
<<locked>>
90%
31270
49%
**34
90%
Ramshot Wild Boar
<<locked>>
81%
52852
83%
**66
100%
ReloadSwiss RS 50
<<locked>>
81%
43976
69%
**15
98%
ReloadSwiss RS 52
<<locked>>
81%
44889
70%
**77
100%
ReloadSwiss RS 60
<<locked>>
81%
36376
57%
**02
100%
ReloadSwiss RS 62
<<locked>>
81%
33315
52%
**06
97%
ReloadSwiss RS 70
<<locked>>
81%
33025
52%
**03
96%
Rottweil R 902
<<locked>>
81%
47355
74%
**38
100%
Rottweil R 903
<<locked>>
81%
40712
64%
**79
100%
[Rottweil R 904]*
<<locked>>
85%
34606
54%
**44
90%
[Rottweil R 905]*
<<locked>>
84%
31140
49%
**21
90%
Rottweil R 907
<<locked>>
81%
38493
60%
**06
95%
SNPE Vectan SP 11
<<locked>>
81%
41684
65%
**28
100%
SNPE Vectan SP 7
<<locked>>
81%
51459
81%
**26
100%
SNPE Vectan SP 9
<<locked>>
81%
49197
77%
**07
100%
SNPE Vectan Tubal 3000
<<locked>>
81%
50807
80%
**18
100%
SNPE Vectan Tubal 5000
<<locked>>
81%
42496
67%
**00
100%
SNPE Vectan Tubal 7000
<<locked>>
81%
36738
58%
**44
95%
Shooters World Long Rifle
<<locked>>
81%
37260
58%
**90
97%
Shooters World Match Rifle
<<locked>>
81%
50357
79%
**07
100%
Shooters World Precision
<<locked>>
81%
45614
71%
**25
100%
Somchem S335
<<locked>>
81%
50285
79%
**21
100%
Somchem S341
<<locked>>
81%
51082
80%
**23
100%
Somchem S355
<<locked>>
81%
41075
64%
**75
100%
[Somchem S361]*
<<locked>>
86%
36985
58%
**77
90%
Somchem S365
<<locked>>
81%
30153
47%
**44
99%
[Somchem S385]*
<<locked>>
81%
28732
45%
**46
90%
Vihtavuori N133
<<locked>>
81%
48008
75%
**69
100%
Vihtavuori N135
<<locked>>
81%
40089
63%
**00
100%
Vihtavuori N140
<<locked>>
81%
46992
74%
**11
100%
Vihtavuori N150
<<locked>>
81%
35462
56%
**44
100%
Vihtavuori N160
<<locked>>
81%
36579
57%
**10
98%
[Vihtavuori N165]*
<<locked>>
88%
29936
47%
**62
90%
Vihtavuori N540
<<locked>>
81%
46470
73%
**34
100%
Vihtavuori N550
<<locked>>
81%
37304
58%
**56
98%
[Vihtavuori N555]*
<<locked>>
81%
26165
41%
**42
94%
[Vihtavuori N560]*
<<locked>>
93%
37362
59%
**05
90%
Winchester 6.5 StaBALL
<<locked>>
81%
34635
54%
**60
99%
Winchester 760
<<locked>>
81%
39015
61%
**98
96%
[Winchester StaBALL HD]*
<<locked>>
81%
21437
34%
**14
91%

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.

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