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Thread: How do you find COAL/CBTO

  1. #21
    Boolit Grand Master


    Larry Gibson's Avatar
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    I've been using the split case method for many years. Works for me.
    Larry Gibson

    “Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
    ― Nikola Tesla

  2. #22
    Boolit Master Hannibal's Avatar
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    Quote Originally Posted by JonB_in_Glencoe View Post
    Yeah, but a mold rabbit hole is lots cheaper than a gun rabbit hole, LOL
    I do not subscribe to the theory that an out of spec barrel issue can be corrected by experimenting with oversized bullets. Considering the time and components that will be needed to conduct such an experiment.

    If you find such endeavors satisfying then it's your choice. I simply make other choices.

    Apparently this is a subject we do not agree on. And I'll refrain from joking about it.

  3. #23
    Boolit Master 15meter's Avatar
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    I was given a Hornady case length gauge, been pretty happy with it. The 5/16-32 doesn't sound right for the tap size. I'll have to check what I use.

  4. #24
    Boolit Master Hannibal's Avatar
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    Quote Originally Posted by 15meter View Post
    I was given a Hornady case length gauge, been pretty happy with it. The 5/16-32 doesn't sound right for the tap size. I'll have to check what I use.
    I can't remember what I use but I know is pretty unusual. I think I remember where I put it. I'll check when I get home.

  5. #25
    Boolit Grand Master



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    Quote Originally Posted by Hannibal View Post
    You are probably correct. I knew it was an oddball and 1/4-28 isn't really odd enough. I can't lay my eyes on my tap at the moment.
    Typo on my part. It's 5/16 X 36

    https://bulletin.accurateshooter.com...y-o-a-l-gauge/

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    Last edited by M-Tecs; 12-20-2023 at 04:54 PM.
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  6. #26
    Boolit Buddy
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    I do the cleaning rod method. Easy to do at the range. But that just gives you a COL for that bullet, that seating depth. I usually add .005" to the COL to give a slight seat to the throat, and start load development from there.

  7. #27
    Boolit Master Hannibal's Avatar
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    [/QUOTE]

    Found my tap. 5/16-36 is correct.

  8. #28
    Boolit Master 15meter's Avatar
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    Dug my tap out, yup 5/16-36, ordered right off amazon. 32 just didn't sound right to this old guy's ears. Made a number of my own, that tap has been paid for several times over. Finding Hornady dummy cartridges for the tool is interesting when you are looking for things like 318 Westley Richards or 8x60S.

  9. #29
    Boolit Master Hannibal's Avatar
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    Quote Originally Posted by 15meter View Post
    Dug my tap out, yup 5/16-36, ordered right off amazon. 32 just didn't sound right to this old guy's ears. Made a number of my own, that tap has been paid for several times over. Finding Hornady dummy cartridges for the tool is interesting when you are looking for things like 318 Westley Richards or 8x60S.
    Indeed. They don't offer just anything. Which is fine. Not a big deal to work around.

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check