The shortage has a lot to do with the manufacturing process.
Each company only has so many reloading lines. All calibers are loaded on those lines, Each load has to book "time" on the line. Some lower demand calibers may only be loaded once a year, so when those are gone, you have to wait till next year.
I talked with a Federal plant supervisor about this long ago. There is a lot of set up involved in setting up a line to load a specific loads for commercial sales, it's not just a matter of swapping dies, and measuring out some loads. Everything has to be proofed and validated. On some lower demand loads, they can spend more time setting up than the production takes.
Plus there are shortages all up and down the supply chain.
Each company only has so many reloading lines. All calibers are loaded on those lines, Each load has to book "time" on the line. Some lower demand calibers may only be loaded once a year, so when those are gone, you have to wait till next year.
I talked with a Federal plant supervisor about this long ago. There is a lot of set up involved in setting up a line to load a specific loads for commercial sales, it's not just a matter of swapping dies, and measuring out some loads. Everything has to be proofed and validated. On some lower demand loads, they can spend more time setting up than the production takes.
Plus there are shortages all up and down the supply chain.