| Gauge | Bore Diameter | Wad Diameter | Gauge | Bore Diameter | Wad Diameter |
|---|---|---|---|---|---|
| 4ga. | 1.070" | 1.050" | 19ga. | .626" | .636" |
| 5ga. | .976" | .995" | 20ga. | .615" | .625" |
| 6ga. | .919" | .935" | 24ga. | .579" | .589" |
| 7ga. | .873" | .888" | 28ga. | .550" | .560" |
| 8ga. | .835" | .850" | 410 | .410" | .415" |
| 9ga. | .815" | .803" | 30cal. | Rifle | .310" |
| 10ga. | .775" | .788" | 32cal. | Rifle | .320" |
| 11ga. | .751" | .762" | 38cal. | Pistol(.357") | .360" |
| 12ga. | .729" | .740" | 38cal. | Rifle | .360" |
| 13ga. | .710" | .720" | 40cal. | Rifle | .410" |
| 14ga. | .693" | .703" | 44cal. | Pistol(.429") | .430" |
| 15ga. | .667" | .687" | 44cal. | Rifle | .450" |
| 16ga. | .662" | .672" | 45cal. | Pistol(.452"-.454") | .455" |
| 17ga. | .649" | .659" | 45cal. | Rifle | .460" |
| 18ga. | .637" | .647" | 50 cal. | Rifle | .510" |
