Is there a velocity difference between neck-sized and FL sized brass with identical loads?
Great question, and I find the anser to be yes to a point. I can get vel spreads say of 70fps with new brass. After neck sizing I see the velocity to be on the high side of the ones that are FL Sized but velocity spreads can go down as low as 15fps. If you can keep the necks straight, Neck sizing is great.