There are high-BC bullets for .17 and .204 centerfire cartridges, but none match the BC levels or velocities of the fastest .224 cartridges (all modern centerfire cartridges from .22 Hornet through .220 Swift and .223 WSSM), so they remain your best bet for mild-shooting, flat-shooting, wind-defying, long-range predator rifles. Here are some options:

Barnes Match Burners 69-gr. BC .339.
Barnes Match Burners 85-gr. BC .410.
Barnes TSX 70-gr. BC .314

Berger Match VLD Target 70-gr. BC .371.
Berger Match VLD Target 73-gr. BC .343.
Berger Match VLD Target 75-gr. BC .423.
Berger Match VLD Target 80-gr. BC .445.
Berger Match BT Target 82-gr. BC .444.
Berger Match VLD Target 90-gr. BC .551.
Bergert Match BT Long Range Target 90-gr. BC .512.

Hornady Match 68-gr. BC .355.
Hornady Match 75-gr. BC .395.
Hornady A-Max 75-gr. BC .435.

Nosler Custom Competition HPBT 69-gr. BC .305.
Nosler Custom Competition HPBT 77-gr. BC .340.
Nosler Custom Competition HPBT 80-gr. BC .415.

Sierra HPBT MatchKing 69-gr. BC .301.
Sierra HPBT MatchKing 77-gr. BC .372.
Sierra HPBT MatchKing 80-gr. BC .420.

Swift Scirocco 62-gr. BC .307.
Swift Scirocco 75-gr. BC .419.