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Honing Die Necks

 
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  #8  
Old 04-21-2009, 11:13 PM
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Re: Honing Die Necks

MagMan: Did a die a couple of weeks ago, very easy to do. I had a 40-65 die that sized inside of the case to about.395. then the expander button brought it back out to .407. It seemed an excessive amount to work the brass so I split the end of a dowel with a hacksaw and wound a strip of 220 grit wet or dry sandpaper on it until it was a snug fit, chucked in the cordless drill and held it under the faucet with a trickle of water running. It took a few strips to get it out to the size I wanted, then I finished with 320 grit. Now the expander will just barely open the neck a little more when I bell the mouth for the bullet. It worked well enough I may have to do some others. No postage, no waiting no problem. CliffM
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Old 04-22-2009, 05:18 AM
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Re: Honing Die Necks

y not put the expander ball in a lath and turn it down until its to the specs u want. then as the brass gets pulled out of the die the neck gets expanded to the exact size you want for the right neck tension. or am i missing something here??
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Old 04-22-2009, 06:46 AM
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Re: Honing Die Necks

Woods.......the light just came on , I'm picking up what your saying now. Makes sense, though I think I'm still going to hone this die.


Quote:
or am i missing something here??
I believe that to be the case. By decreasing the size of the expander ball I would be increasing my neck tension. My neck tension is good I just want to get rid of the dreaded expander. By having the right sized neck I would only have to lightly squeeze the necks in by like .003 which again is much easier than pulling something over a sizing button as the run out should be perfect (on the outside anyway).


Cliff, while I was going to get a little more technical with it sounds like your idea will work just fine. I have a couple of practice dies laying around and I'll experiment on those first. Thanks
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Old 04-22-2009, 07:22 AM
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Re: Honing Die Necks

Yes it does sound a bit on the crude side but the results are good. The wet or dry paper cuts fast enough but is not so aggressive as to cause concern about over doing it. The paper is thin enough to make it easy to control diameter by how many wraps are used. Just work it back and forth the full length of the neck like honing an engine cylinder and let the water keep it flushed clean. Run a case through the die at intervals to check progress until you arrive at your desired diameter. CliffM
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  #12  
Old 04-22-2009, 07:58 AM
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Re: Honing Die Necks

Another down side to honing the die is that if you change brass manufacturer or sometimes even get a different lot of brass then the neck thickness can change. That will mean that you will get a different bullet grip every time your brass changes.

Not trying to discourage you just playing devil's advocate here and thinking it through myself.
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  #13  
Old 04-22-2009, 08:17 AM
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Re: Honing Die Necks

Quote:
Another down side to honing the die is that if you change brass manufacturer or sometimes even get a different lot of brass then the neck thickness can change.
I did also think about that. Worse case scenario then I'd have to purchase a bushing for one of my other neck dies. I'm not to worried as I usually keep quite a bit of matching brass around.


Quote:
Not trying to discourage you just playing devil's advocate here and thinking it through myself.
No worries, I just got really excited when all of my cases were flat lines on the concentricity gauge (not even a wiggle). That is what prompted me to try and do this to my other dies. Granted when I seated bullets some of the cases did have some runout (high spots that I pushed in is all I can figure) but not enough to concern me as I just sort them for sight in and fouling.
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  #14  
Old 05-08-2009, 07:20 PM
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Re: Honing Die Necks

As an update tonight I got to honing with a piece of 1/8" drill rod, a few pieces of 200 & 320 grit emery cloth and some reinforced packing tape all chucked up in a cordless drill. It took about a half an hour and I managed to hone close to .0035". After running the 320 the neck looked as smooth as it did before I started. All was done in the kitchen sink with plenty of water.

Total indicated run out on every case was no more than .0005 so to say I'm happy is an understatement.

I did check it like 10 times (trial and error) because I was afraid to go to far. If anyone else has the ambition to try this just remember to take your time and those dies are a hell of a lot harder than they look.

Thanks to all.
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