Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

W.R. Weaver Company Mount Base Specifications

DETACHABLE MOUNT BASES
No. of Base
Length
Hole Spacing
Diameter
Thickness
11
.812
.504
1.290
.147
12
.812
.504
.925
.155
13
.812
.504
.730
.238
14
.812
.504
Tapered for Savage 99 only
15
.812
.504
.946
.195
16
.812
.504
.840
.205
17
.812
.504
.770
.219
18
.812
.504
1.050
.182
19
.812
.504
1.160
.125
20A
1.168
.860
1.360
.127
21
.812
.504
.710
.273
22
.812
.504
.700
.201
24
.812
.504
.900
.271
25
.812
.504
1.125
.248
27
.812
.504
.930 Tapered
.161/.185
28
.812
.504
Flat
.239
29
.812
.504
Flat
.292
30
.812
.504
.845 Tapered
.205/.230
31
.812
.504
Octag.
.182
32
.812
.504
Octag.
.357
35
1.168
.860
1.290
.147
36
1.401
.604
3.900
.272
39
.812
.504
Flat
.165
40A
1.840
.860
1.290
.147
42
.812
.504
.730
.298
43
.812
.504
.840
.265
44
.812
.504
.770
.279
45
.812
.504
1.050
.396
46
1.168
.860
1.290
.222
47
1.168
.860
2.692
.368
48
.812
.504
1.290
.395
49A
1.058
Win. 70 in 375 H&H, 300 H&H only
.368
50
4.500
.504
Flat-Tapered
.200/.232
53
4.983
Win. 88, 100
1.290
.222
54
.812
.504
1.290
.222
55
.812
.504
1.050
.310
57
2.340
.960
1.220
.250
58
4.624
3.275
Flat
.283
59
.812
One hole only
Notched
.366
60
4.500
Browning .22 Auto, H&R "Topper"
.361
61
1.168
.860
Flat
.360
62
4.430
Rem. 740, 760
1.290
.222
63A
6.125
Marlin 336
Flat
.283
63B
5.450
Marlin 336
Flat
.370
65
2.000
None
Spec. *
.322
66
2.650
None
Spec. *
.322
67
1.650
None
Spec. *
.332
68
.812
.504
.916
.399
70
5.900
Rem 600
1.290
.275
71
1.168
.748
1.180
.215
72
.812
.504
2.590
.376
74
5.723
Savage 24V
1.125
.275
75
1.168
.860
1.050
.310
76
.812
One hole only
1.050
.310
77
.812
.504
.700 Tapered
.248/.267
78
.812
.504
.880 Tapered
.171/.198
79
.912
.604
3.900
.272
80
6.125
.500
1.892
.147
81
6.000
H&R 360, 361
.946 Tapered
.237/.252
82
6.000
H&R Topper 158C
1.050
.396
83
.812
.504
1.252
.250
84
1.168
.860
1.252
.250
85
1.168
.860
1.124
.275
86
.862
.555
.925 Tapered
.366/.396
87
5.000
H&R 700
1.050
.400
88
5.900
Mossberg 500AS
1.500
.496
89
.862
.560
1.062
.347Fr/.301Rr
90
5.000
Marlin 39A
.300Fr/.428Rr
91
1.400
.504
.946
.280
92
4.500
Thompson Contender Hand Gun
.361
93
4.430
Rem 4/6/7400/7600
1.290
.222
94
.812
.500
1.124
.170
95
1.168
.860
1.124
.170
TO-9
4.750
Ruger 10/22
2.000 Tapered
.155/.170
TO-10
5.00
Grooved for most 22's
Spec. *
.175
* Flat topped dovetail rib