I loaded up 30 rounds with two loads to try.
Not a large problem, I had 300 rounds of .204 Ruger loaded up that had been neck sized for my factory barrel and I found they would not chamber in my new barrel unless I used excessive force on the bolt. Worried I would gall the lugs I purchased a cheap RCBS kinetic bullet puller and pulled all 300 rounds. I then FL resized them all (after removing the decapping rod/pin) and began load development for the new barrel.
You will be fine, just remove the decapping pin/rod and be sure to use lots of lube, wipe the lube off with a rag (rather than tumble them, if like me, that is how you remove lube).
Be glad you only have 30 rounds to do, my 300 nearly wore out my bullet puller
