.237 bullet comparator

[fabricator21]

Does anyone make a bullet comparator that has an actual .237 diameter hole?

 

[Dmagna]

Modular Headspace Comparator - Kit

Modular Headspace Comparator Kit offers precise measurements and reliability, making it versatile for all your reloading needs and enhancing your accuracy.

shortactioncustoms.com

They said the 6mm is .237