Skip to content Skip to footer
Please to create posts and topics.

Reloading .223

I've reloaded a lot of ammunition in my day.  Most of the handgun ammo has been on a Dillon RL550B and an XL650, which is the current machine.  Most of the rifle ammo has always been on a single stage and for bolt-actions.

I am now trying to reload .223 Remington for the first time.  I have RCBS does that were given to me, so I'm trying them first before buying Dillon dies if I need to.  They are the SB, which I'm assuming mean small base.

I have a Dillon case gauge.

I am starting with a bunch of recent LC once-fired brass.  In the un-resized condition, it fits the case gauge perfectly.  I resized one and now it will not fit the case gauge, with part of the rim still not sinking in.

What do I need to do first?

First, see if the size die is making firm contact with the shellplate. With most brands of dies this is necessary to reach minimum headspace. Next, after resizing, be sure to remove all the case lube from both the outside of the brass and the inside of the gage, as this can give a false reading.

It sticks up 0.006" after resizing.  And I have to push a LITTLE bit to get it to drop that far into the gauge.

Before resizing, the case dropped in to a perfect fit in the gauge.

I didn't see your reply until after my added info.  I will try your suggestions now.  I did wipe off all lube residue on case and gauge, but there was no change.  I will try to get die to go further down and compress the shellplate a bit.

It works now.  I had to do it twice and now there is a noticeable feel as the shellplate contacts the die, lifting it and the toolhead slightly as it cams over, but the brass falls into the case gauge flush.  Thanks!

Will Dillon be making a die for the SDB in .223 or will I have to upgrade to another machine?

223 is too tall for the Square Deal machine. You would need to go up to the RL550B or XL650.

By Reloaders, For Reloaders.

Reloader.com © 2026. All rights reserved.

Go to Top
E-mail
Password
Confirm Password