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October 1, 2020, 09:21 PM | #1 |
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Join Date: December 5, 2019
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Customizing the Lee sizing die
The bore on my Arisaka meaasures .31105 and the Lee sizing die is .311. I need .312. Would you suggest I size to .311 and PC to .312, PC to .312 to .313, or use valve grinding compound to enlarge the sizing die to .312? I was thinking of using the same ram rod and put valve grinding compound on it or a bullet and drive it through the sizing die a few times.
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October 1, 2020, 10:11 PM | #2 | |
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Join Date: October 28, 2006
Location: South Central Michigan...near
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Quote:
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October 2, 2020, 07:11 PM | #3 |
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Join Date: October 16, 2014
Location: Iowa
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Either method will work. I’ve done both. I’ve used 600 grit valve lapping compound to open up a sizing die. Just apply some of the compound to a few bullets and size them. Check the resulting diameter often. The Lee did only took a handful of passes to enlarge. I tried the same thing with a Lyman die and it took much longer.
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October 3, 2020, 12:55 PM | #4 |
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Join Date: December 5, 2019
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Thanks reddog81!
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October 11, 2020, 01:20 AM | #5 |
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Join Date: October 23, 2005
Location: US
Posts: 3,657
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I too would hone the die some. I’m a fan of sizing being my last step before loading the projectiles.
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October 11, 2020, 05:46 AM | #6 |
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Join Date: September 15, 2007
Location: NC
Posts: 753
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How to hone a Lee sizing die.
http://www.castpics.net/subsite2/How...Size%20Die.pdf If you have any of the Lee Breech Lock presses you can use the Lee Breech Lock sizing kit https://leeprecision.com/bl-bullet-sizer-kit.html Then purchase which sizer you want to use. https://leeprecision.com/breech-lock-bullet-sizing-kit/ Most all military type surplus rifle that I have come across will chamber a much larger dia. bullet than the groove to groove dia. of the bore, with a few exceptions. In general, I size my bullets .002" over groove dia. or as large as will easily chamber. Powder coating will add .002" at a minimum usually more depending on the thickness of the coating. |
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