Just a question on neck sizing.
Is it best to full length neck size or partial say two thirds of the way down the neck?
Which is the best way or is there a generally accepted rule of thumb

Does this help with accuracy, say to center the cartridge in the chamber or is it a myth.

Thanks Neil.

Neil, several things seeing as you posted this on a BR and Target forum.
1. It will be very difficult to neck size only, using a full length sizing die. Try it! You will be sizing the case walls before you are sizing the neck.
2. BR shooters used to neck size only using special dies by Wilson etc. that support the case, while sizing the neck. I still use this method. Nowadays many use a "bump" die that also sets the shoulder back just a hair. This is because, in large part, folks are shooting at very high pressures.
In general, I would ask what rifle you are shooting and what standard of accuracy you are seeking. If you are shooting a factory rifle with no modifications, I would doubt that you would see any significant difference.
Just my 2 cents.
Peter.

Hi Peter,
Thanks for the advice. Yes it is for a factory rifle.
I should have stated in my original posting that I am using a neck sizing die. Sorry about that.
My idea was to only neck size two thirds of the way down the neck and let the unsized portion center the neck in the chamber.

Thanks
Neil

Sorry Neil. Yes. My Wilson neck dies just size the top 2/10 " of the neck. Just enough to hold the bullet firmly. RCBS neck dies can be adjusted to size the entire neck or just a part. Depends if you are going to hunt with these or not. You don't want the bullet falling out!
Peter.

Hi Peter,
I will not be hunting with this rifle as I bought it to go in the 500mtr Fly shoot here in Brisbane.
Its interesting that you only re size the first 2/10ths of your neck, I will try that as the competition only allows you to single round load for each shot.

Neil.