Thanks for the list Pappy. I've got four full boxes of WLR's and one box of WLRM's - all purchased in the last three years or so. None match the numbers on the list but some are only off by a digit or two. Excellent info on the contact at Winchester - will call Monday and see what they say about my lot numbers.

About half way thru another WLR box (lot number also not on the list) purchased in the same general timeframe and never noticed any issues - need to go take a close look at the bolts on those rifles also.

Great info everyone - will post my experience and lot numbers after the call with Winchester.