Roland Thunder
New member
I have an M&P CORE 9mm Pro Series pistol that I had the Apex trigger kit installed on. I have a problem with light primer strikes, about 3 or 4 rounds out of every 100. I've talked to others that have an M&P 9mm with the Apex kit installed that have that problem as well. I was advised to switch to Federal primers (I had been using CCI). I tried Federal and that seemed to have solved the problem. My local gun store does not have Federal but sometimes they have Winchester. My LGS has told me they would try to get me some Federal primers but they did not know how long it would take to get them in.
I am wondering how Winchester compares to Federal or CCI as far as hardness.
I am wondering how Winchester compares to Federal or CCI as far as hardness.