Barrel Dimenions
| Barrel | A | B | C | D | E | F |
|---|---|---|---|---|---|---|
| Remington Mountain | 1.200 | 0.5 | 5 | .700 | .550 | 20 |
| Remington Sporter | 1.200 | 0.5 | 6 | .800 | .650 | 24 |
| Remington Magnum Sporter | 1.200 | 0.5 | 6 | .850 | .650 | 24 |
| Remington Varmint | 1.200 | 0.5 | 4 | .950 | .830 | 26 |
| Winchester Featherweight | 1.200 | 0.25 | ||||
| Winchester Sporter | 1.200 | |||||
| Winchester Express | 1.200 | |||||
| Proof Sendero | 1.200 | |||||
| Proof Sendero Light | 1.200 | |||||
| Douglas #1 | 1.200 | 1.25 | 4.25 | .700 | .560 | 22 |
| Douglas #1 Extended Shank | 1.200 | 1.625 | 4.625 | .700 | .560 | 22 |
| Douglas #2 | 1.200 | 1.25 | 4.25 | .750 | .600 | 24 |
| Douglas #2 Extended Shank | 1.200 | 1.625 | 4.625 | .750 | .600 | 24 |
| Douglas #3 | 1.200 | 1.25 | 4.25 | .780 | .625 | 24 |
| Douglas #3 Extended Shank | 1.200 | 1.625 | 4.625 | .780 | .625 | 24 |
| Douglas #4 | 1.200 | 1.25 | 4.25 | .875 | .650 | 26 |
| Douglas #4 Extended Shank | 1.200 | 1.625 | 4.625 | .875 | .650 | 26 |
| Douglas #5 | 1.200 | 1.75 | 3.75 | .900 | .700 | 26 |
| Douglas #5A | 1.200 | 1.75 | 3.75 | 1.015 | .750 | 22-26 |