A .223 is considered a center-fire rifle, right?It is now legal to use center-fire rifles on fur bearers from the start of deer season until the season on fur bearers closes (typically the last day of February), so on any public land that allows fur bearer hunting use of a center fire rifle is legal for hogs as long as the fur bearer season is open.
This is a relatively new law, but I got solid confirmation on it last year.