I bet if you check the headstamp, they're all Federal! They love to do that, don't ask me why.
As for the set back and jump forward, the outside-the-case-cannelure, is to prevent set-back of the bullet when it strikes the feed ramp of the barrel. Sort of a ledge the bullet can't go past. Ignore it as far as loading them goes. They may fail sooner than non-cannelured cases, because the cannelure weakens the brass.
That looks to be mixed headstamp brass. It will load alright, but don't expect target accuracy from it. The ONLY way I'll buy once fired brass is if it is sorted, all the same headstamp.
Sent from my backyard via smoke signals!
The more people I meet, the more I love my dog
They're going to get their butts kicked over there this election. How come people can't spell and use words correctly?