Dead Lizzard; Frank's suggestion is dead on. Check out The Forester Products pdf here: http://www.forsterproducts.com/clien...structions.pdf . They have a pic and a few instructions on the subject. Basically, I only size the first 2/3 of the neck which keeps the last 1/3 of the neck a larger diameter. This larger diameter helps to (among other things) align the bullet to the bore.

Cheers
EM