A semi auto .223 or better a .22-250 has been on my wishlist for some time. Of course I have accuracy standards too. The mini 14's really are fun just don't shoot the best. Everytime a new prospect comes out it is heavy like the Volquartsen at or over 10 pounds.
A couple times Armalite has had small runs of .22-250 in the AR platform but heavy.
It seems odd that gun makers will make semi auto in .243 and rimfire and shotguns in 10, 12, 20, .410 but avoid the predator caliber gap.
At least the AR platform is slowly changing/improving with several piston actuated versions out.
I wonder how heavy and expensive the new Mini is. I have heard so-so and acceptable accuracy reports so I'm still unsure.