At 27-7/8” they are cut for sure. Down from 30” likely.

A note on Parker chokes, they will be long (4-5” plus) if the chokes are tight. And shorter the more open the choke is. The choke reamers are tapered. And the more open the choke is means that the reamer when farther into the muzzle, so the taper will be shorter.

Here are some examples of Meriden Factory Parker choke reamers.

Attachment 90390