http://greysguns.blogspot.com/2011/0...on-recall.html

just a heads up.

DO NOT USE WINCHESTER® RANGER® 223 REMINGTON 64 GRAIN POWER-POINT® AMMUNITION THAT HAS A LOT NUMBER ENDING IN DK01, DK11, DK21, DK31, DK41 or DK51. The ammunition Lot Number is ink stamped inside the right tuck flap of the 20-round carton, as indicated here:

edit:
oops forgot to post the direct link
http://www.winchester.com/library/ne...andRecall.aspx