THE POSSIBLE SHOP
DID - YOU - KNOW
GAUGE TO BORE DIAMETER
 
Gauge
Bore Diameter
Gauge
Bore Diameter
6ga.
.919"
24ga.
.579"
7ga.
.873"
28ga.
.550"
8ga.
.835"
32ga.
.526"
9ga.
.815"
410
.410"
10ga.
.775"
30cal.
Rifle
11ga.
.762"
32cal.
Rifle
12ga.
.729"
38cal.
Pistol(.357")
13ga.
.710"
38cal.
Rifle
14ga.
.693"
40cal.
Rifle
15ga.
.667"
44cal.
Pistol(.429")
16ga.
.662"
44cal.
Rifle
17ga.
.649"
45cal.
Pistol(.452"-.454")
18ga.
.637"
45cal.
Rifle
19ga.
.626"
50 cal.
Rifle
20ga.
.615"
         
Buckshot
OOO
.350 dia
   
Buckshot
OO
.330 dia
   
Buckshot
# 4
.240 dia