Model 11 .223 light primer strikes

[KHawk]

I’ll give the neck sizing a try. I had a 400 piece bag of once fired brass given to me, by a friend, that I have already prepped and primed. The only brass I have now is fire formed to my chamber. I bought a brick of S&B primers at Cabelas that I used. I’m normally Winchester or CCI primers.

When the first FTF happened, I was able to reload and the round fired. The weird thing I noticed was the dents in the primers began to get lighter and lighter, until you could barely tell the pin had struck the primer.

I just find it odd that these rounds are suddenly not working after working flawlessly before now.