making 300 Whisper brass from .223 question

[Mike-Sid]

I'm making 300 Whisper brass from .223 brass, and having a few "problems".
here is what I am doing:

1) Trim the .223 brass on a drill press with a jig I made up. I trim them close to the final length.

2) run the brass through a Whisper FL sizing die.

3) do the final trim with my Giraud case trimmer.

Now the problem. If I FL resize with the expander ball in, the sholder does not form fully. If I resize without the expander in, the shoulder forms correctly, but neck not expanded enough to seat bullet.

Do I have to run it through without the expander, then with the expander to form the brass correctly?
What am I doing wrong?

[HUNTER2]

Sounds like you are pulling the shoulder back when the expander ball is removed...Is it hard to remove the ball on the upstroke? Are you lubing it any? Try putting some lube on the inside of the neck.. Are you using recycled brass ( shot more than once, extra hard ), new brass? I have used some remanufactured brass that was so hard it had to be annealed before resizing.. If they are tooo soft with really thick necks they will do the same thing...

[pug]

For the once fired mil brass I run them all through without the expander to fully form the shoulder. This gives a .303 to .304 inside neck but since I shoot boat tails I just let the bullet expand the neck. After they are fire formed I then consider them 300/221 brass and I usually have the expander back on for the second run. Early on I bought two different batches of processed brass made from LC and FC cases and both batches had the smaller id necks so I am pretty sure the volume producers are sizing without the expander. You are not really doing anything wrong.

[Mike-Sid]

Pug, I agree with you! Thanks for the help. I never had this problem before, but then I was running the brass through the size die with the 27 cal expander in, then trim the brass.

Thanks

[Malaga]

Mike.. you are on the right track... speed it up a little I need some brass :)

[Mike-Sid]

Settle down Malaga! Play with your new Trident 9 and mind your own business!

I decided if I cut then resize, the case neck does not form straight. The case mouth has a pronounced bell.
I went back to resizing with out an expander then trimming. The case forms well, except the inside neck diameter is about .290.

This must be the way to go? I guess the 1st loading will be with boat tails.


Am I doing things correctly?

Thanks for the input