I have some brute-forced cases for Fireball made from 223 brass, and I had some of "that" happen. So, that's probably a result of original forming, or a possible lube dent you missed when loading.
Not a big deal as long as the bullet doesn't touch the dent when seated, in my experience, anyway.
The crinkly shoulders don't affect accuracy to any degree, as long as the neck formed on center -- I trimmed and turned all the necks on the brute forced brass, including any possible "donut." The cases shoot fine even if they are kind of ugly.
But the 22-250 has a bit of taper, and if you have to FL size them, that dent you have will move up into the shoulder/neck junction and might be an issue.
It won't move much, but it will move -- by then, I would guess that the body of the case is showing the stretch at the base.
So -- if you want, shoot and monitor. If not -- chuck it....it's just one case that doesn't meet your standards.
