While I have some concerns about the Winchester primers and have heard quite a bit about failures, I have been using them (though not exclusively) for the last twenty years and will likely go ahead and use up what's left.
I have often seen a difference on the target between match primers and standard primers but not always has the advantage gone to the match primers. I had one bunch of Federal Small Rifle Match primers which would not shoot as well as any standard primer, from any manufacturer, including Federal, in the 6BR I was trying them in. I tried a couple of boxes then sold the rest. GD
