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Thread: Gas checks and muzzle breaks

  1. #1
    Boolit Man 35isit's Avatar
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    Gas checks and muzzle breaks

    New guy here. Have a XP in 7BR. It has a non-removable muzzle break. Are there any concerns using a gas checked bullet in it? The brake has ports around the whole circumference. Thinking about the RCBS 145 silhouette bullet.
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  2. #2
    Boolit Master
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    Is the brake inside a rifled part of the barrel, or is its inside diameter larger than groove depth?

  3. #3
    Boolit Master



    mpmarty's Avatar
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    Muzzle brake shouldn't care about gas checks. However, I have had lead bits spewed from the brake on my 7.62 Nato AK shooting cast boolits without checks. The guys to the right of my shooting position had more to duck than supersonic hot brass.
    Marty-hiding out in the hills.

  4. #4
    Boolit Master

    runfiverun's Avatar
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    you may or not have to clean some lube or some lead slivers from it.
    it's all an educated guess,,,, till the trigger is pulled.

    the more i find out about shootin boolits, the more it contradicts everything i ever learned about shooting jaxketed.

  5. #5
    Boolit Man 35isit's Avatar
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    Quote Originally Posted by richbug View Post
    Is the brake inside a rifled part of the barrel, or is its inside diameter larger than groove depth?
    It is screwed on semi permanently to the end of barrel and is larger than bore diameter.
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  6. #6
    Boolit Master
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    Quote Originally Posted by 35isit View Post
    It is screwed on semi permanently to the end of barrel and is larger than bore diameter.
    You should be fine.

    I have seen "ported" type brakes where they pulled each and every gas check off.

  7. #7
    Boolit Master yondering's Avatar
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    Yup, what richbug said. You shouldn't have any trouble. Does your brake have a lip on the inside at the front (exit) end? Some designs do, some don't. If there's no lip, there shouldn't be anything to hang up a gas check.

    It might be a good idea to make sure you use the hornady style checks that crimp on, rather than the old lyman style that fall off, although that probably isn't necessary.

  8. #8
    Boolit Master in Heaven's Range

    AZ-Stew's Avatar
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    Two photos:

    The one on the left is a muzzle break.

    The one on the right is a muzzle brake.

    Regards,

    Stew
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  9. #9
    Boolit Master in Heaven's Range

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    That said, I have a Magna-Ported T/C Contender 45-70 that has no problem with 'checked boolits.

    Regards,

    Stew
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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