I never buy milsurp, I only buy ammo with brass casings, and never pay shipping charges. . . and I've had a rule for some time now that if I found 1000 rounds for $300 I had to buy at least 1000 rounds. I suppose your $45/100 is only $15 more, but that's $150 more per 1000. . . . Damn that broken Magic 8-Ball.
That stuff wasn't steel, it was brass boxer primed American Eagle like Walmart used to stock.
As a handloader, I hate milsurp too. Now that I've got my AR running, I'm going through some old "blasting" ammo that's at least a decade old, a lot was LC and other milsurp 5.56.
I've had very mixed results removing the primers and crimps. Some came off easy with the Lee Universal Decapper, others required extreme measures. Removing the crimp and trimming are also annoying. This is based on my experience hand loading straight walled pistol rounds. No comparison regarding the labor invovled

I'm told I need only do all this processing once, and it'll behave for reloading thereafter.