He pushed a lot of shoulder up into what is now neck, the Lee Collet die does a lot more to neck uniformity than most dies, but that doughnut he created isn’t going anywhere without neck turning or reaming.
Stinks you’d cut them before asking. Lots of folks can and do use good Lapua 243win brass, and 6.5 Creed Lapua brass is pretty easily found these days - with the advantage of small primers. Personally, I’d get a cheap Forster handheld neck turner, or borrow one from a fellow reloader, and finish what you started. Like I said, sometimes, once you stepped in it, you might as well keep walking. Right now, they’re just expensive paperweights. At least if you finish them out, they’ll have utility again. Right now, they’re trash, so it’s on you to rectify your mistake and spend the energy to turn them back into high quality, useful brass.
How many pieces are you talking about?