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Thread: A rudimentary question: Can one use .416 gas checks on .401 bullets?

  1. #1

    A rudimentary question: Can one use .416 gas checks on .401 bullets?

    The title of my post says it all--I assume .416 gas check (41 Magnum) also work on .40 caliber bullets because neither Lyman nor Hornaday seems to offer a .40 caliber gas check. TIA

  2. #2
    Boolit Master
    Tom W.'s Avatar
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    Mar 2005
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    I have made a bunch of .45 Colt sized with my old FreeChex II and Pepsi cans folded over once. On a whim I decided to try some on boolits for my .44 Mag and they did just fine.
    Remember that these were aluminum checks. I dunno if copper checks will squeeze up enough or not. Can't hurt to try a few....
    Tom
    μολὼν λαβέ


    Did I ever mention that I hate to trim brass?

  3. #3
    Boolit Master

    Rcmaveric's Avatar
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    As long as it fit check fits the shank and has enough thinknes to crimp on snug then i dont see why not. I can use .270 cal check on 6.5mm but not the other way. They both have the same size check shank diameter. But the cup thickness is different. You crimp a 6.5 mm check ok to a .270 bullets and I can pull it off with my thumb nail.

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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