Thank you for the feedback, yes Homer,you are correct, the .44 caliber work,it is .429" and will be swag to fit your .423" gas check..it will be great if you can fill me in with details of the process you use to get a good fit of the .44 magnum gas checks you use for the .423" cast bullets.

I received an answer from the gas check company, I really think this is excellent service from this company.

"
Gert,

With those dimensions the people in our shop are saying that a 44 Caliber Gas Check should work. We can adjust the thickness of the raw material to provide several different shank diameters. If you want to try it out and let me know which work best we are more than willing to send you some sample checks. You would just have to cover the shipping cost for the sample checks. Just need to get a country and postal code from you to calculate shipping."

---

John Overacker

VulcanChecks
191 Whitney Road
Penfield, NY 14526