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Thread: will this work ?

  1. #1
    Join Date
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    will this work ?

    ok thinking out loud can be dangerous.
    if a 6mm bbl was chambered with a 30 br reamer( a 6 mm bushing or no bushing/tapered ala Jackie)
    could a long 6mm bullet be seated long in a 6br case so it hit the rifling, with 'reasonable" fire forming load, fired and produce a decent 30 br case ?
    just cause I have this 6mm used bbl hanging around.

  2. #2
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    Quote Originally Posted by rsmithsr View Post
    ok thinking out loud can be dangerous.
    if a 6mm bbl was chambered with a 30 br reamer( a 6 mm bushing or no bushing/tapered ala Jackie)
    could a long 6mm bullet be seated long in a 6br case so it hit the rifling, with 'reasonable" fire forming load, fired and produce a decent 30 br case ?
    just cause I have this 6mm used bbl hanging around.



    Why not, mine is a 223 barrel for my 30BR. Don't need no boolits to fireform.

  3. #3
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    Oct 2019
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    thanks butch.
    I was going to use bullets and regular powder
    with no pullet I was having to clean the chamber/bbl every 10 shots or so.
    was hoping to skip that

  4. #4
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    Since I use candle wax instead of bullets. I've never cleaned it, just wipe the chamber down before each session.

  5. #5
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    I had someone ask me about doing something similar. I declined. IMO, it's asking for trouble. When you know what it is and what its for, you probably wouldn't ever have any trouble. The problem is when someone gets that barrel after you're gone. They think they have a .30 BR and try to shoot a .30 caliber bullet down a 6mm barrel. You can think no way they could do that, but people can do some pretty stupid stuff.

  6. #6
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    Quote Originally Posted by Mike Bryant View Post
    I had someone ask me about doing something similar. I declined. IMO, it's asking for trouble. When you know what it is and what its for, you probably wouldn't ever have any trouble. The problem is when someone gets that barrel after you're gone. They think they have a .30 BR and try to shoot a .30 caliber bullet down a 6mm barrel. You can think no way they could do that, but people can do some pretty stupid stuff.
    Agreed Mike.

    The rig I use is not a rifle. It is a barrel with a screw on breach block and a firing pin that I tap with a hammer as I hold it into a big insulation roll.

    I blow out both 220 Russian to 6PPC and 6BR to 30BR using this method.

  7. #7
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    Oct 2019
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    thanks gentlemen,
    I guess I will paint it red when done
    and felt tip a warning on it

  8. #8
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    Quote Originally Posted by rsmithsr View Post
    thanks gentlemen,
    I guess I will paint it red when done
    and felt tip a warning on it
    Engrave or stamp it with the info. Marker comes off too easy. When I started here at the test range, nothing was well marked, and if at all only with marker or paint. Lots of unknown items. I have since marked everything as it was figured out what it was. I stamped it or now use a laser engraver. In addition every test barrel, gage, fixture, or tool that comes out of my shop has at least my own code number on it. This I keep in a record book with all the data about the item. It is also in our online database. Anyone can see a number, look it up and have all the information on it.

  9. #9
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    will do

  10. #10
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    Augusta, Maine & Palm Coast, Fl
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    I have

    simply shot 6 MM bullets through the 30 barrel and it worked nicely. Stout load and plenty of neck tension. I have heard of others who have put a 30 BR chamber in a 6 barrel and that works good. Always intended to do that but never got to it. Now that I have 600 + prepared cases, I have no need to make any more cases, ever, that I can see.

    Pete

  11. #11
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    Just finished 20 rounds. Rebated the rims, uniformed the flash holes, and overall length. Used some Remington primers, 35 grains of Bullseye, and a wax plug. My brass grew .003" in length and the neck thickness went from .013 to .011. It took practically nothing to expand and I turned them. They are ready to size, check seating depth, load, and shoot.

  12. #12
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    Quote Originally Posted by MilGunsmith View Post
    Engrave or stamp it with the info. Marker comes off too easy. When I started here at the test range, nothing was well marked, and if at all only with marker or paint. Lots of unknown items. I have since marked everything as it was figured out what it was. I stamped it or now use a laser engraver. In addition every test barrel, gage, fixture, or tool that comes out of my shop has at least my own code number on it. This I keep in a record book with all the data about the item. It is also in our online database. Anyone can see a number, look it up and have all the information on it.
    Huge +1.

    I recently moved, which means I sorted through my 'stuff'. I had tools and gauges I don't even recognize. People tell me I have a good memory, but my recollection of my own tooling says otherwise. Mark it and make notes about it. Notes in a plain text file on the computer are easily searched.

    GsT

  13. #13
    Join Date
    Mar 2009
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    193
    Quote Originally Posted by jackie schmidt View Post
    Agreed Mike.

    The rig I use is not a rifle. It is a barrel with a screw on breach block and a firing pin that I tap with a hammer as I hold it into a big insulation roll.

    I blow out both 220 Russian to 6PPC and 6BR to 30BR using this method.
    Got any pictures of this setup?

    Also will fireforming this way still work if your using the shorter 30br chamber (1.510)?

    To do so would you trim the 6br brass to 1.500 before firing? And what sort of powder and wax do use?

    Also is there any advantage to fireforming over expanding? Do you turn the necks before fireforming ?
    Last edited by TrxR; 02-09-2020 at 04:32 PM.

  14. #14
    Join Date
    Feb 2006
    Location
    Wilcox, PA
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    178

    I now use playdoe

    Playdoe is eaiser to use than wax for bullets

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