An analogy might be that GM made the engine blocks for Mercruiser marine engines. To do so required shutting down the line quickly changing out tooling and in one day the made all the engine blocks for the majority of the entire marine market for a year plus.Yeah. The "hunting" calibers like 30-06 and 300 winmag, etc are definitely harder to find and more expensive when you do. I believe the manufacturers really aren't producing it as much and gearing more towards standard/popular calibers like 223 and 308
They probably want to keep churning out the in demand calibers...