You guys sound like you're in the know and as long as you're on the subject of primers, answer me this,
Last night I loaded 300 45ACP. My Winchester (from a new box) primers acted up a little, as in about 10 of 300 hung up in the primer tubes and were very stubborn to get to fall out.
A few just didn't want to go in the tubes at all !
My primer tubes are new, clean and straight.
Is this in your opinion possibly a bad primer lot ?