Winchester #41 5.56mm NATO-Spec Small Rifle Primers Box of 1000

I purchased a case of these when they became available because there was nothing else around. I was a bit skeptical because they are much cheaper than many of the others. I use them in .223/5.56,,, small primer 6.5 Creedmoor,,,,, small primer .308 win. They have worked perfectly. No difference at all from CCI. I just ordered my 5th case of them.