I like neck sizing. It improves accuracy a lot. Does it really matter on a hunting rifle? Probably not but it's nice to shoot tiny groups and it also adds to you confidence. I don't resize the whole neck though, only about a 1/4" of it. That helps keep the case centered up in the chamber. Bronko has a very good point.By neck sizing only you will notice after a few firings the bolt will start to close tight, thats the last thing you want when you are a good hunt is to have a bolt close so tightly you have to darn near have to hit it with a hammer. The solution to that is by a bump die. It will only bump the shoulder back and not touch the neck. It might size the body a little bit but it will be very very little. After you run you're cases through the bump die then neck size them.That will fix the tight bolt when chambering around.