Thread: Case neck sizing and effect on accuracy

Originally Posted by Gillie

When you test full length sized cases and neck sized cases you might want to use a chronograph at the same time. You will likely find the neck sized cases will shoot a little faster but at least you will see which produces a more consistent velocity as well.

From what I've read and observed through my own loading it doesn't have much if any effect on sd. Consistency is key. Kinda doesnt matter which way you size, as long as it is consistent and concentric.

I used to neck size but now just partial fl size bumping the shoulder 2 thou or so. Worked well for me