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Thread: 6mm mcr

  1. #1
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    6mm mcr

    saw this case in a artle years ago.any one shoot it or know about it

  2. #2
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    Quote Originally Posted by g n brezinski View Post
    saw this case in a artle years ago.any one shoot it or know about it
    Are you looking to increase your post count? You asked this on 5-22-2018 and received an answer. If you don't remember this just use your search function.

  3. #3
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    i will ,,,,sorry my brain some times skips a beat.

  4. #4
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    6mcr

    GNB -

    Howdy !


    I did search on the net, for the 6MCR. First item that came up was bnechrest.com/archive/index.php/t-95849.html
    This was apparently, a post about precision shooting w/ the .30-30 Win .

    In the posts that came up from the archive...... Pete Wass made an input dated 09-04-2016, where in he talks a bit about the 6 MCR.

    An elaborate-to-make wildcat, based off .30-30 .



    With regards,
    357Mag

  5. #5
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    If I remember right the cartridge was developed by Harvey Miller. The MCR stands for Miller Custom Rifles.

    It is very similar to a 219 Donaldson except with a 6mm neck.

    Harvey had a fair amount of success with it, setting some world records with it I think.

    Harold Broughton cooked up a similar cartridge he called a 240 Coyote #2, also based on a 30-30 case.

    These cartridges came along as a result of Sako ending production of 220 Russian brass.

    I messed with the Coyote, and experienced brief moments of greatness followed by prolonged periods of mediocrity.

    Federal actually made small primer pocket 30-30 brass, called 30 American, just for these wildcats.

    I think Dave Tooley was the force in the Fed. 30 American brass coming along.

    FWIW
    Steve Kostanich

    PS If anyone out there finds some error in my post, please correct things.
    Last edited by Steve Kostanich; 06-08-2021 at 06:54 PM.

  6. #6
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    Quote Originally Posted by Steve Kostanich View Post
    If I remember right the cartridge was developed by Harvey Miller. The MCR stands for Miller Custom Rifles.

    It is very similar to a 219 Donaldson except with a 6mm neck.

    Harvey had a fair amount of success with it, setting some world records with it I think.

    Harold Broughton cooked up a similar cartridge he called a 240 Coyote #2, also based on a 30-30 case.

    These cartridges came along as a result of Sako ending production of 220 Russian brass.

    I messed with the Coyote, and experienced brief moments of greatness followed by prolonged periods of mediocrity.

    Federal actually made small primer pocket 30-30 brass, called 30 American, just for these wildcats.

    I think Dave Tooley was the force in the Fed. 30 American brass coming along.

    FWIW
    Steve Kostanich

    PS If anyone out there finds some error in my post, please correct things.


    Steve, I have some of that brass from Red Cornelison. It is Federal without headst6amp. I also have a few that has no flash holes.

  7. #7
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    Butch,

    I still have 10 boxes of the 30 American brass!!!

    Steve

  8. #8
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    Quote Originally Posted by Steve Kostanich View Post
    Butch,

    I still have 10 boxes of the 30 American brass!!!

    Steve
    As you well know, folks still look for them.

  9. #9
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    Quote Originally Posted by Steve Kostanich View Post
    Butch,

    I still have 10 boxes of the 30 American brass!!!

    Steve
    Is it undrilled or small flashhole?

  10. #10
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    All the 30 American brass had/has small flash holes. If I remember correctly we had a prototype run done initially with no head stamp or flash hole to test flash hole size. It wasn't many pieces. Probably a few hundred. Easy enough to do. Make 30-30 with no hole or head stamp.

  11. #11
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    Cool

    Quote Originally Posted by dave tooley View Post
    all the 30 american brass had/has small flash holes. If i remember correctly we had a prototype run done initially with no head stamp or flash hole to test flash hole size. It wasn't many pieces. Probably a few hundred. Easy enough to do. Make 30-30 with no hole or head stamp.
    when i first met vic. Swindlehurst in london ont. In1974 he was shooting a 30 30 case necked to 6mm and shot in the ones with it '

  12. #12
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    Cool

    Quote Originally Posted by billbrawand View Post
    when i first met vic. Swindlehurst in london ont. In1974 he was shooting a 30 30 case necked to 6mm and shot in the ones with it '
    a.. He was shooting a 30 rem case necked to 222. Man called orin bellows moved into our town in 1947 wilcox pa

  13. #13
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    30 American Dies

    I think I have a set of these dies that came out of Jef Fowler’s estate. If someone is interested let me know. They are like new.

    Dgconder1980@yahoo.com

  14. #14
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    Cool

    Quote Originally Posted by billbrawand View Post
    when i first met vic. Swindlehurst in london ont. In1974 he was shooting a 30 30 case necked to 6mm and shot in the ones with it '
    a.. He was shooting a 30 rem case necked to 222. Man called orin bellows moved into our town in 1947 wilcox pa he later developed the alumin sleeve ilater chambered it for hunting turkeys you could use 25 30 32 rem cases for it.

  15. #15
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    Quote Originally Posted by Dave Tooley View Post
    All the 30 American brass had/has small flash holes. If I remember correctly we had a prototype run done initially with no head stamp or flash hole to test flash hole size. It wasn't many pieces. Probably a few hundred. Easy enough to do. Make 30-30 with no hole or head stamp.
    Dave, I have a few of those cases that I got from Red Cornelison. I believe he said they came from Federal.

    Billy, we have a forum member that lives in NM that shoots a 30-30 in bench rest and he has killed many PPC shooters.

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