N.Y. Comp. Codes R. & Regs. tit. 9, Appendices, app K-1
Current through Register Vol. 46, No. 50, December 11, 2024
MINIMUM CHAMBER DIAMETERS
RIMFIRE AND CENTERFIRE PISTOL AND REVOLVER
Minimum chamber diameters (inches) | ||
Chamber | Rear | Front |
| 9mm Luger | .395 | .381 |
| 22 Rem Jet CF Mag. | .380 | .252 |
| 221 Rem Fireball | .3804 | .254 |
| 25 Auto | .2841 | .2792 |
| 256 Win mag | .3819 | .286 |
| 30 Luger | .3971 | .3322 |
| 32 Short Colt | .320 | .320 |
| 32 Long Colt | .320 | .320 |
| 32 S&W Long | .3415 | .3395 |
| 32 Colt New Police | .3415 | .3395 |
| 32 S&W | .340 | .3395 |
| 32 Auto | .344 | .339 |
| 357 Magnum | .381 | .380 |
| 38 Short Colt | .3805 | .379 |
| 38 Long Colt | .3805 | .379 |
| 38 Colt New Police | .390 | .388 |
| 38 S&W | .390 | .388 |
| 38 Special | .381 | .380 |
| 38 Special, Match, Wad Cutter | .381 | .380 |
| 38 Super Auto | .389 | .387 |
| 380 Auto | .3825 | .377 |
| 41 Magnum | .437 | .435 |
| 44 S&W Special | .459 | .458 |
| 44 Rem. Magnum | .460 | .458 |
| 45 Colt | .487 | .480 |
| 45 Auto | .4812 | .474 |
| 45 Auto, Match, Wad Cutter | .4812 | .474 |
| 45 Auto Rim | .4794 | .473 |
| 455 Colt | .481 | .481 |
| 22 Short | .2291 | .227 |
| 22 Long | .2307 | .227 |
| 22 Long Rifle-Match | TBA* | TBA* |
| 22 Long Rifle-Sporting | .2307 | .227 |
| 22 Long Rifle Shot | .2284 | .2236 |
| 22 Win. Rimfire | .2462 | .2441 |
| 22 WMRF | .2240 | .2430 |
| 32 Short | .3225 | .319 |
| 32 Long | .3225 | .319 |
Footnotes
* TBA = to be advised.
N.Y. Comp. Codes R. & Regs. tit. 9, Appendices, app K-1