.243 resizing ball

I have a question. I am working up some loads for my .243 using Winchester brass, hornady full length sizing die, redding boss press. I am using rcbs lube and mica for the neck. for some reason I have to use what I think is excessive force when I pull the brass back over the expander ball and I don't know why. I took the die apart and cleaned it out well and it seemed to be working slightly better but within 2 or 3 shells it seems that I am fighting too much friction and almost seems to grate of the ball. Anybody have any ideas?

Thanks for your time.
 
I tried resizing .243 without the mica and the grating and some of the excess pressure seems to have subsided, however it still seems like a lot. I don't remember having to use this much pressure when I resize my .270 shells. Any tips that could help?

Thanks
 

76Highboy

Administrator
Staff member
Hello jcreloader. It sounds like you need to lube inside of the neck case. If you run the cases dry you will reduce the life of the expander ball and it is hard on the neck. I prefer the Redding Imperial Convenience Pak. You take the case mouth and dip it into the media which will apply graphite into the inside neck of the case. Seeing how graphite is in most powders there is no contamination. I hope this helps. Keep an eye on the .243 cases as they grow fast. it's inherent on the .243.

Highboy

 
Thanks. My brain is telling me graphite. . . Duh you should know that! yes that seemed to be the problem, I was even using a brush to apply the powder to the inside of the neck case and it didn't seem to be sticking. I couldn't figure it out. I will keep an eye on the neck cases. Thanks for taking a moment.
 

76Highboy

Administrator
Staff member
Thanks. My brain is telling me graphite. . . Duh you should know that! yes that seemed to be the problem, I was even using a brush to apply the powder to the inside of the neck case and it didn't seem to be sticking. I couldn't figure it out. I will keep an eye on the neck cases. Thanks for taking a moment.
Your welcome.

Highboy
 
I don't know if this will be helpful to this thread but I was also searching around for info and found a tip that was helpful online. Gunblue off of YouTube (Yes I know put your negative YT epitaph here) said that the grating over the expander ball is because of sooty residue after firing and it needs to be brushed out. I bet tumbling the brass even for a few hours does not get the inside of the neck as clean as it needs to, especially on a 6 mm cartridge, and that could possibly be what I was experiencing. He used a nylon brush coated with something that might make everybody here cringe (Contamination!) but the concept seemed sound.
 
Tumbling want necessarily remove all the residue in the case neck unless you use the wet tumbling method, or something like a brass prep center. Basically what I do is I have a plastic insert like you use on dry wall that accepts a screw but I mount a bore brush in it and run it through my case necks a couple time before I size them, I don't use any cleaner along with the bore brush. I don't load that many rifles cartridges at a time so that step is easy and fast and more cost effective for my needs.
 
Yes I also run a little case neck brush. Makes for a lot less wear and tear on case, expander ball and shoulder of the reloader!
Saludos
Janito
 
I take a couple of extra steps.

  1. Remove decapping rod from die.
  2. Use a universal decapping rod to deprime.
  3. Resize your brass.
  4. Use a Lyman M die to expand the neck.
  5. Prime and load.
  6. Crimp with a Lee FCD.
If you don't want to buy the universal, and wish to stay with "size and decap on one stroke", replace your 24 expander ball with a 22 one. It will still hold your decapping pin on, but it won't touch your neck.

Easier on the shoulder because all work is done on the downstroke. Added: to clarify, I meant easier on YOUR shoulder, not the brass' shoulder. :)

Easier on the brass because the M die is not knurled. It doesn't gouge the inside of the neck.
 
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Tumbling want necessarily remove all the residue in the case neck unless you use the wet tumbling method, or something like a brass prep center. Basically what I do is I have a plastic insert like you use on dry wall that accepts a screw but I mount a bore brush in it and run it through my case necks a couple time before I size them, I don't use any cleaner along with the bore brush. I don't load that many rifles cartridges at a time so that step is easy and fast and more cost effective for my needs.
Thanks
 

AR Precision

Moderator
Staff member
I don't know if this will be helpful to this thread but I was also searching around for info and found a tip that was helpful online. Gunblue off of YouTube (Yes I know put your negative YT epitaph here) said that the grating over the expander ball is because of sooty residue after firing and it needs to be brushed out. I bet tumbling the brass even for a few hours does not get the inside of the neck as clean as it needs to, especially on a 6 mm cartridge, and that could possibly be what I was experiencing. He used a nylon brush coated with something that might make everybody here cringe (Contamination!) but the concept seemed sound.
You can use a brush and run it thru the neck with unique by Hornady, I use it sometime. It does not contaminate the powder. I use Redding with graphite and dip the necks in also.
 

AR Precision

Moderator
Staff member
I don't know if this will be helpful to this thread but I was also searching around for info and found a tip that was helpful online. Gunblue off of YouTube (Yes I know put your negative YT epitaph here) said that the grating over the expander ball is because of sooty residue after firing and it needs to be brushed out. I bet tumbling the brass even for a few hours does not get the inside of the neck as clean as it needs to, especially on a 6 mm cartridge, and that could possibly be what I was experiencing. He used a nylon brush coated with something that might make everybody here cringe (Contamination!) but the concept seemed sound.
You could also polish your expander ball it could be the factory may not have polished it good which is common.
 

AR Precision

Moderator
Staff member
I have a question. I am working up some loads for my .243 using Winchester brass, hornady full length sizing die, redding boss press. I am using rcbs lube and mica for the neck. for some reason I have to use what I think is excessive force when I pull the brass back over the expander ball and I don't know why. I took the die apart and cleaned it out well and it seemed to be working slightly better but within 2 or 3 shells it seems that I am fighting too much friction and almost seems to grate of the ball. Anybody have any ideas?

Thanks for your time.
And you could even have a bad die. Some things slip thru quality control sometime, just a thought.
 
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