Hello, I´m not a experienced reloader but I´ve reloaded some. I´m continuing reading that the better for brass is only resize the neck. But in my Dillon 550, if try to only resize the neck, the pin don´t remove the used primer, I need to go downer to remove the primer and then the all brass is resized. I´ve put down the pin all I can do it but continue resizing the 80% of the leght of the brass.
Did I need another dies? Wich be good for my Dillon 550 for .308? Now I have Dillon´s ones. I don´t find the respond to my question.

Thanks.

I don`t have any experiance with the Dillon dies but they should allow you to lower the decapping pin enough to "partitially size" your cases. This is my prefered way to size with a full lenght sizer. The idea is to set your die to just touch the shoulder of the case. The body of the case will see some sizeing but it will be a minute amount compared to a full lenght size. Case life will improve, and your cases should have a good chamber fit with little run out. I personally feel this a better way to sie then full or neck only.

To part size I set my die into the press with the ram raised until contact is made with the shell holder. I then raise the die 1-2 full turns and with a empty , lubed case that I`ve colored the shoulder useing a magic marker I slowly size and screw the die deeper, checking the case until I see the die hitting the case shoulder. The die will rub off the ink when contact is made. Don`t go for a full shoulder contact! You just want the die touching enough to insure it is connecting. I then check to see if the case easily chambers in my rifle if not I add 1/16th - 1/8th turn to the die and try chambering again. When the case easily chambers I lock the ring and use the die as set.

If you do not want to size the body then you will need a neck sizer. They are available from all the die manufactures as far as I know, and should be sold by Dillon too if you prefer their tooling..

If you just want to try neck sizing only pick up a Lee Collet Die.

They cost very little and come with instructions, although I find that I get a better result having the die threaded in much deeper than recommended.

I use a lot of Lee Collet dies. The big advantage with them is you need no lube.

Other manufacturers make neck sizing dies as well but they need lube.

I don't think the Lee collet die will work if you use it in the 550 according to Lee's directions. It may work if you use the 550 as a single stage press.

Use the die you have. You could get a decapping die, $8.00 for Lee, and use it in position one, and the full length die in position two.

Don't laugh. Even though you use a Dillon you can still do this. Get a Lee punch and base set and decap all your brass by hand. It goes quickly.
Then set your die for neck or partial sizing and give it a try.

Thanks to everybody. I´ll prove the differents solutions. Regards,

Hi Stephen
I had the same problem with a Forster FL die. The only way I could punch out all the primers while only partially sizing the neck was to wind the expander button in a bit further, which meant that the expander wasn't in the right spot. In the end I bought a universal de-capping die. This adds another step but I don't do big volumes and like to have everything set up as a want it!
Cheers
Alex

like joe said, lower the decapping pin to knock it out. for setting the die, i use the stoney point tool to measure the shoulder and then set the die to bump back .002. seems to work well.

Lee collet die! works great!