Ya, I'd also argue the 6.8 western is the only obscure cartridge out of any that are mentioned. I think you're hinting at marketting? If 6.8 had PRC after it instead of western this would be a different story. You could headstamp a 7saum case with "28prc" and guys would think it's the greatest thing ever. Point being, is neither of the cartridges mentioned besides the 6.8 western will be and have ever been obscure. They are proven and sustained for reasons well outside of obscurity and will continue to be a stable reamer used by many precision smiths. But that run of ADG 6.8 that's supposed to hit soon should tell. It wont best a 7saum and it will probly best the "beloved" 6.5prc but it will remain "obscure" because ding dongs think PRC makes you a long range guru.
Doesn't Lapua and Peterson make 300wsm brass...
ADG 300SAUM....