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Thread: Checks- To size or not to size?

  1. #1
    Boolit Master
    Petander's Avatar
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    Checks- To size or not to size?

    Those dark purple bullets were coated,then Lee-sized to .359 , then heat treated. I then seated Hornady checks with a Lyman lubrisizer using the seater,checks snapped on, crimped and measured .362.

    No neck tension problems loading,I also get a very clean barrel,shooting these from a Rossi carbine with a rough,large bore.

    Green and gold bullets were fully sized with the Lyman,checks are measuring .3595 , bullets being .359 (that is a modified 358 die.)

    Depending on your glasses,you can actually see the check size difference in the pic. Purple ones look like "scrapers", which they are.

    Is there a general rule or reason to size gas checks closer to bullet size?


  2. #2
    Boolit Grand Master
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    Is there a general rule or reason to size gas checks closer to bullet size? If the gas check is too much larger than the bullet it is going to expand the casing/neck and you won't have neck tension.
    Hell, I was there!

  3. #3
    I'd crimp them all.
    As well as the neck tension issue and pain in the butt seating them in the case you might get fliers if they get cock-eyed upon firing. Not too likely but why introduce non standard procedures that could work against accuracy.

  4. #4
    Boolit Grand Master
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    if you don't size them to bullet why use them?
    Hit em'hard
    hit em'often

  5. #5
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    I seat, crimp, & size all in one stroke, and have good results.

    But if that process works for you, its a good idea.

    As far as doing the seating, sizing, etc in more than one step:
    I try not to make extra work for myself.
    I've found that there are plenty of other people more than glad to do that for me.
    Last edited by Winger Ed.; 11-27-2019 at 03:16 PM.
    Everyone can learn from their mistakes.
    However; it's less painful, and cheaper to learn from the mistakes of others.

    Old age and treachery will always overcome youth, and skill.

    OK folks. Enough of this idle chit chat. This ain't no retirement home.
    EVERYONE!!
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  6. #6
    Boolit Master
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    Thanks everyone. They are all crimped,just not all sized.

    Just wondering how much over bullet size everyone else is using them. And why. Gas checks are a new variable to me,I shoot plain base everything. Now this Rossi carbine is giving me unusual leading so I'm giving checks a go here

    At least the 362's keep the barrel clean @ 1900 fps. Oddly enough,I have no neck tension or loading problems. Accuracy was normal,no group testing yet though. Breaking claybirds ok @ 75 m.


  7. #7
    Boolit Grand Master
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    I guess if it ain't broke don't fix it!
    Hell, I was there!

  8. #8
    Boolit Master
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    Quote Originally Posted by swheeler View Post
    I guess if it ain't broke don't fix it!
    This is also true. I wish I knew the bore size.

  9. #9
    Boolit Master
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    Quote Originally Posted by Petander View Post
    This is also true. I wish I knew the bore size.
    Now I know. .3566.




  10. #10
    Boolit Buddy
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    Man the chamber must be large. None of my revolvers (38/357) will allow a for a bullet even close to that large. Do you get good case life? I would say keep using them as long as you get good performance.
    n.h.schmidt

  11. #11
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    Quote Originally Posted by n.h.schmidt View Post
    Man the chamber must be large. None of my revolvers (38/357) will allow a for a bullet even close to that large. Do you get good case life? I would say keep using them as long as you get good performance.
    n.h.schmidt
    I apologize,it was the .3566 GROOVE diameter being miced above,not bore. My bad plus the language barrier.

    Bore is about .3485- .349, can't mic that one,calipers only.

  12. #12
    Boolit Master
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    New Hornady checks are tighter, seated base is .3615 and they snap better,old ones were generally just a little loose with my particular mold/alloy.

    Snap is good. Old ones came with a mold I got recently.


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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