I have always liked the x57s, have had good experiences with the 7, .257, and 8.
All three are massively underrated in my view.
I guess I just have to ask: Why the heck, when Big Army was making up the 30-03 nee 30-06, trying to rip off the Mauser 98, didn't a 30x57 come out of the dust?
And along that line, why has there never, ever been a 308x57? Sure, there are the Argentines, and the Boer War cartridges, but I woulda thought at some point, some army somewhere would have gone for a 30 on the real 57.
