Ya , couple things you will need to do to it .
1) Is to remove the primer crimp , this can be done with a swedging tool or a simple chamfering tool as Mil Spec brass have crimped in primers .
2) Is to check the OL of the cases to insure that their not too long for your 223 chamber .
3) FL size the case's to insure that they will properly fit your chamber .
stimpy