This primer problem has been acknowledged by Winchester for some time now. There is a thread here with the subject "WLR Primer" under Big Game Rifles in the Reloading section that has some info that might help. Rather than searching for a list of lot #s just call Linda Bates (618-258-3530)at Winchester and she will be able to tell you if your lots might be affected.
I had a brick of WLRs but hadn't shot any yet. I called and talked with a woman named Sharon. She has since retired and I believe Linda has taken her place. Anyway, I gave her my lot # and she said they should be sent back. She sent me the shipping material and had it picked up by a carrier. In a few weeks I received a check for more than the purchase price of the primers. The process was very easy for me. It took several weeks in total but I wasn't in a hurry. I wouldn't file a complaint with the online form on Winchester's website. Call and talk to someone in person, that way you know it is being handled.
Just thought I'd relay my experience. Hope this helps.
Last edited by JayJunem; 04/25/17.
