At Brownell's, I found a .223 loaded ammo case gage. It's ordered, and I am going to run all my reloads through it. Just looking at some examples, I can see that I am likely slightly bulging a few of the cases. I
Here's a picture of the problem. The ones on the left are clear and obvious. I would have seen that right away. Some of mine look like the one on the right. It's slight, and most of the lot are okay, then every once in a while, one has this subtle bulge. I'm just going to gage the whole lot and then pull down any that don't pass.