Was looking for the print and number, just checking if any members went down that roadGive JGS Reamers and Manson Reamers a call. They probably have a design to fit your needs.
Big thanksTom Danielson ( Alpha) told me their 6ppc brass is based off of a JGS 1045 reamer. .273 neck seams to be the go to for a Alpha no turn. Shooter13 has a no turn .273 alpha reamer. I would reach out to him. See how it has worked out.