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Thread: A possible gas check material

  1. #1
    Boolit Master Tokarev's Avatar
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    A possible gas check material

    I've been using fins from these copper and aluminum CPU heatsinks for shims and workholding, but it suddenly struck me that they could be used for gas checks as well.
    What does everyone think? Are they too thick?

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  2. #2
    Boolit Master



    MUSTANG's Avatar
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    Measurement of thickness? Take the width of the base of the Boolit, then twice the thickness of the material you want to use; then a slight amount larger (.001 or ...?) Thise results in a gas check that is Swaged during sizing onto the Base of the boolit.
    Mustang

    "In the beginning... the patriot is a scarce man, and brave and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot." - Mark Twain.

  3. #3
    Boolit Master Tokarev's Avatar
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    Aluminum: 0.02" 0.5mm - this is how thick the 30cal checks that I have are.
    Copper: 0.01" 0.3mm

  4. #4
    Boolit Buddy dimaprok's Avatar
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    I just did same thing recently was looking a material that's thick enough for 44 mag and tried a CPU heatsink and it was measuring .0156, it worked! I will would prefer .016 if I could find it. The aluminum was soft as butter, it punched and formed perfectly. For my testing purposes it's fine but for mass production there is hardly material.

  5. #5
    Boolit Master Tokarev's Avatar
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    Thanks for the info!
    I am going to the nearest scrap yard to try and buy more of them at the scrap metal prices, like 50 cents each!

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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