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Thread: hornet brass

  1. #1
    Member
    Join Date
    Feb 2018
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    hornet brass

    I am a relatively new user of the 22 hornet, when I tried to trim the cases i noticed the flash hole is smaller in some cases, my LEE trimmer does not fit thru this smaller flash hole, would it be a problem to drill this out to suit, I haven't noticed any difference in the performance in the brass with the smaller flash hole. , anyone struck this before?

  2. #2
    Member
    Join Date
    Dec 2013
    Location
    Tokoroa
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    1,221
    You would be better off thinning the pin on the trimmer with some wet and dry, It can be tricky drill out flash holes
    another option is to get a Flash hole deburring tool it will clean up the burr inside the case could be all the problem is.

  3. #3
    Member
    Join Date
    Mar 2012
    Location
    Christchurch
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    1,320
    Just drill out the flash holes to the same diameter as the main bunch, assuming they are all the same brand. If you have more than one brand (PPU are reputed to be the best Hornet brass after RWS) and one brand has small flash holes, then uniform that brand with the smallest drill that will fit all of the flash holesl. A smaller flash hole is a good thing, but mixed size flash holes in the same brand of brass is not a good thing because it leads to less than uniform velocity. However, your resizing die will stick in smaller flash holes unless you make the primer ejecting pin smaller in diameter. A well-designed flash hole tool is available from SinclairInternational in the States (this uniforms the flash hole and takes off the burr on the flash hole inside the case) but the postage is a bit eye-watering. It is all compromises, especially when trying for accuracy with the Hornet.

  4. #4
    northdude
    Guest
    i use a lyman flash hole deburer ive come across s&b brass where the flash hole wasn't in the centre of the pocket and was breaking off my decapping pin I use highland brass in both my hornets with 35gr vmax

  5. #5
    Member
    Join Date
    Feb 2018
    Posts
    2
    thanks for that, I have mixed brass, so will have to sort in to brands I suppose and check the primer hole sizing , you are right some of the primers dont decap well, which must the the smaller flash hole brass. makes sense now .

 

 

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