Guy on guns america makes "300/whatever ya wana call it today" ready cz's, spook can get your howa chambered "just get him before bullwinkle season", nib howa's in 223 or 204ruger are around $350 shipped to your ffl from guns america.
ETA:
http://www.gunsamerica.com/Search.aspx?T=300/221
heh kelly must be out atm