CZ 527 221 FB will get you 3500-3600 with 40's and AA 1680. The guns are accurate out of the box. May want to tweak the trigger to your liking or use the SST trigger. Whittaker's has the gun for $615 right now.
That speed is right up there with a 223 and 40's.
Lapua brass is available for a touch more than Rem brass.
^^^^^^^ +1
Or the same gun in 222 if you can find one....
