None of us know what bullet the OP will hunt with nor does he. He's not got the rifle to test any of them yet. He'll decide after that. He may then let us know. Then I'll know, too.
Wisner74,Right now I plan on ordering: A Redding Competition Bushing 3 die Neck sizer set. I figure this would be the one to buy?? I am unsure of which neck sizing bushings to buy though. As I have not had a chance to measure a seated bullet yet. Any ideas??
All of my 300 Win mag builds are set up for the Redding type S FL resize die, the Willis die is cool but if things are right with the reamer and you don't hammer the brass there is no need for it, I keep a couple but I've only used them when there were other issues. I use the Redding mic seater but I'm converting over the the Wilson seating dies but for what your talking you won't see the difference between the Redding or Wilson as long as you have the micrometer.
Wisner74,
I would suggest getting the Type S match FULL LENGTH DIE SET. That consists of the competition Seater die w/micrometer top and Type S full length bushing die. And get the VLD seating stem (#55730 is Redding part number for the 300 WM). Do yourself a favor and wait until you decide on and get the brass you will be using to get the bushing(s). Get one thats .002 under the measurement across the neck of a loaded round and one .001 under to start.
It's to align then seat the bullet into the case neck. That does nothing to align the bullet to the bore.The aim of the seating die is to align the bullet with the bore of the the barrel.
Only if the fired case neck is chamber neck diameter. Don't know if that ever happens. Case necks typically do not touch chamber necks at all when the round's chambered; there's a thousandth or more clearance all the way around. Therefore, the neck plays no part in centering the bullet to the bore. But it should be easy to figure out what does center correctly resized bottleneck cases' bullets in the bore.The base of the neck is left chamber size and allows the case to center itself in the chamber.