l have had both 222 and 223 Rem in Contenders AND rifles..
0nly advantage is lots of factory ammo for 223.. Disadvantages
are numerous.. A 223 Contender is much louder than a 222.
For ME.. 223s are not as accurate as a triple deuce ln a TC or a
rifle... Big disadvantage for 222 is BRASS. Quite $$$$ compared
to 223R... Before the short PPC and SM ctgs the 222Rem was the
accuracy KING in benchrest...