That's the issue; it's over bore. Eats barrels.
For hunting it's probably acceptable. But for any type of competitive shooting, it's just too over bore.
And if a cartridge isn't being used in some type of competition sport, well, that's a huge drop in demand when compared to those cases that are. Hunters expend, what, maybe 200 rds a year? Competitive shooters can expend that amount in a single day.