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Thread: Different results seating GCs

  1. #21
    Boolit Grand Master

    Winger Ed.'s Avatar
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    Quote Originally Posted by Gibbs44 View Post
    I seated my first gas checks today and of course had my share of not square checks,
    To eliminate that, put the check on the bench, push the base onto the check, and leave the boolit standing up on the bench.
    You can see it its off of being seated flat. Ones that are- I push 'em down a little harder.
    If they're still 'difficult', I lay that flat wrench for the sizer on top of the die, and push it down square with the press.

    There's a little tool for doing that, but I never felt the need for it.
    Also, you can't find a picture of it--- that probably means it would be real simple to make.
    Political Correctness and the cancel culture is only allowed to exist because of the coward culture.


    In school: We learn lessons, and are given tests.
    In life: We are given tests, and learn lessons.

  2. #22
    Boolit Buddy Gibbs44's Avatar
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    Quote Originally Posted by Winger Ed. View Post
    To eliminate that, put the check on the bench, push the base onto the check, and leave the boolit standing up on the bench.
    You can see it its off of being seated flat. Ones that are- I push 'em down a little harder.
    If they're still 'difficult', I lay that flat wrench for the sizer on top of the die, and push it down square with the press.

    There's a little tool for doing that, but I never felt the need for it.
    Also, you can't find a picture of it--- that probably means it would be real simple to make.
    Thanks for the info, I'll give that a try too. I figured it was probably procedural error on my part. I was pretty much chucking the check in the 4500 and sticking the base to it. Most were ok ish for playing around, but it'll be better next round.

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  3. #23
    Boolit Grand Master

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    Quote Originally Posted by uscra112 View Post
    If the GC is seated square, I don't think the dome will make any difference.

    The old Ideal handbooks told you to use a flat-face bottom punch for plain lead, a slightly concave one for gas checks. Purpose being to keep lube from getting between the bottom punch and the bullet. Lyman dies at least come with a concave bottom punch. The other end is flat, though. Try flipping yours over to see what happens. The chamfer won't be any problem since you're sizing a powder-coated bullet.
    This is correct ... my old Lyman 450 H & I dies have concave bottom punchs .
    I always assumed the slight dome was correct . I've been seating gas checks with the concave surface for about 50 years now and don't see a problem ... in fact I thought it was "domed" to help the gas checks seat square on the shank .
    If it feels better flat , flip the punch over and use the flat end .
    Gary
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    " Let's Go Brandon !"

  4. #24
    Boolit Grand Master popper's Avatar
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    OP question - the 'dome' is due to die pulling the sides of the GC down. Only problem is the GC MUST enter the die correctly. If bullet first, the bullet tends to align the GC better. The dome itself won't decrease accuracy but the is AIR under it. It will get flat on firing.
    Whatever!

  5. #25
    Boolit Grand Master

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    Quote Originally Posted by Gibbs44 View Post
    I was pretty much chucking the check in the 4500 and sticking the base to it.
    That only works for me if the check doesn't sort of make a snap when I put it on.
    If I pick up a boolit, and the check falls off-- then it'll do OK by putting it in the sizer, then run the boolit down.
    Political Correctness and the cancel culture is only allowed to exist because of the coward culture.


    In school: We learn lessons, and are given tests.
    In life: We are given tests, and learn lessons.

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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