marks on case neck after resizing

[softwind]

Gentleman,

I am somewhat new to reloading and only recently encountered something that I can't explain or find an answer to anywhere.

After putting a number on new .223 Lake City case through a Forster resizing die I noticed multiple thin vertical lines on the necks. I have cleaned the die and double checked that it is set up properly. I believe the cases were lubed properly. No undue pressure when operating my press.

Anyone have an idea what these marks might be?

 

[Travelor]

From you description it appears there is either grit in the neck area of your die or it has been scored by some foreign material.

Who made your dies?

George

 

[Silverfox]

softwind--I think Travelor's suggestion is something you should investigate. Did you thoroughly clean you dies BEFORE you started using them? There can be debris left inside the dies at the factory that could cause some problems if you don't clean them out. You don't mention whether you have a bushing style die or just a regular sizing die, but regardless, if you have access to a bore scope, you might check out the neck area of your die to see if there are flaws.

I recently had thin vertical lines on the necks of some .17 Remington casings and the same problem on some of my .204 Ruger casings I had run through my Type S Redding bushing dies that I used a TiN bushings in. I could not see any flaws on the inside of either bushing, but I sent them back to Redding for inspection, repair/replacement. They sent new bushings back to me. The vertical line problems were solved.

Since that experience, I re-read the instructions for using the TiN bushings and it recommends using lubricant on the necks even with the TiN bushings. I also take the precaution of chamferring and deburring the case mouth before I run them into my sizing dies to remove any burs.

 

[Preacher]

If it's caused by the die, and I'm sure it is, just call Forster about it, and you can be sure they will take care of the problem....

 

[softwind]

Thanks for all the input. I have not been specifically lubricating the necks since I have been using a lube pad. I have been told to try spray lube. Will talk to Forster.

Lot to learn.
Bill

 

[artbosco]

Gentleman,

I am somewhat new to reloading and only recently encountered something that I can't explain or find an answer to anywhere.

After putting a number on new .223 Lake City case through a Forster resizing die I noticed multiple thin vertical lines on the necks. I have cleaned the die and double checked that it is set up properly. I believe the cases were lubed properly. No undue pressure when operating my press.

Anyone have an idea what these marks might be?

Did you CLEAN the inside of the die before you first used it, like you do with a new barrel?

The manufacturing process can leave residue inside. It's always a very good idea to run a patch or two with bore cleaner inside the body and neck, when you first receive them.

In addition it's also good practice to clean the inside periodically to remove powder residue and other bits of grit that builds up over time.

Keep'em clean inside and they shouldn't scratch your brass. JB Bore Cleaning Compound can be used to remove minor imperfections and smooth things up.

 

[brian427cobra]

Skip the spray lubes and get some Imperial sizing wax, clean your die with a strong copper bore cleaner and rock on!