Larry Koch
Silver $$ Contributor
What he said, don’t sweat the donut.As others have said, a donut is not something that forms on the outside of the neck, but on the inside. Even a true donut, I think of as a complete non-issue as long as the base of the bullet isn't seated into it or below. It's a catchy term that gets way too much attention as long as its below the seated bullet. If the bullet does have to seat below that point, the bushing not sizing that portion of the neck can actually prevent it from being an issue then too, if there is enough neck clearance and the bushing never pushes it back inside the neck. IOW, let it form and just don't push it back in. Again, this only works if there is enough neck clearance where the bullet never contacts it and it never get pushed back it.
Don't sweat them if you're not seating into it.