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7 RUM Brass from Bertram

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Unread 01-10-2013, 07:42 PM
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Join Date: Feb 2006
Location: Eastern NC
Posts: 242
7 RUM Brass from Bertram

I received my Bertram 338 Edge brass from Shawn this week. The quality appears to be outstanding. It occurred to me that if Bertram would make the high quality Edge brass, they may likely make us some high quality RUM brass with a large enough order. I am specifically interested in the 7 RUM brass in order to push the 195 Berger. Does anyone have an interest and/or any insight in how to pursue this? Maybe Shawn could bring in the RUM brass also? Thanks in advance for your help.
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  •   #2  
    Unread 01-10-2013, 07:55 PM
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    Join Date: Jan 2004
    Location: Blackfoot, Idaho
    Posts: 8,859
    Re: 7 RUM Brass from Bertram

    jett,

    If the Edge is nothing more than the 300 Ultra necked up one could resize the Bertfam brass 7 - Ultra but . . .

    How do you keep your Edge brass distinguished from the RUM brass? I don't have an Edge so that's not a prob at my place.

    What we do out here in the sticks when something needs to be done is do the Mcgiver thing and . . . usually get into trouble sooner or later. . .

    Here's a possible workaround:

    The Coloring of Brass
    by Royce W. Beal
    written on 17 March 1995 specifically for the readers
    of the rec.guns newsgroup.
    questions should be directed to me at SLQZ4~CC.USU.EDU


    Read this entire essay before attempting any one
    treatment. If you choose to just "cut and paste" part
    of this, please make sure you get the safety instructions
    and warnings after the recipes. Under no circumstances
    do I consider myself liable for any accidents which occur
    while using any of these chemicals. Also, I do not consider
    myself an expert in this field and am still doing research
    for the FAQ. This will be a temporary article. Because I
    am still experimenting, I cannot vouch for all of these
    colors.
    Concentrations and conditions Do matter. (Concentration
    is more important than actual volume, so if you want to
    use less, make sure that you use proportionately less of
    each ingredient) If you want good results follow the
    recipes closely. Above all it is important that the brass
    surfaces be clean. This means an extra hour or so in the
    tumbler for the cases and then touch them only sparingly.
    I have tried to collate recipes which will require the
    acquisition of the more common chemicals. I have also tried
    to steer clear of the really hazardous arsenic and cyanide
    salts (which you probably can't get anyway) If you feel
    that you've been cheated by this, please refer to the
    references section of this report and find the books for
    yourself in any well stocked library.
    It is my understanding that these are all surface
    coatings and should not damage or weaken the brass.
    obviously you will want to do this treatment with unprimed
    brass. Do NoT USE METAL UTENSILS (ok maybe stainless steel)
    Glass or Plastic containers are the preference. If you are
    really worried about what this is going to do to your brass,
    refer again to the reference section below.


    TIFFANY GREEN:
    Copper Sulfate................. 8 ounces
    Ammonium Chloride......... .....4 ounces
    Sodium Chloride........... .....4 ounces
    Zinc Chloride............. .....l ounce
    Acetic Acid............... .....2 ounces
    Water..................... .....l gallon

    VERDE:
    Copper Nitrate................. 16 ounces
    Ammonium Chloride.............. 4 ounces
    Acetic Acid.................... l quart
    Water.......................... l gallon

    GREEN:
    Iron ( ferric) Nitrate......... 2 ounces ( Fe(III)(No3)3)
    Sodium Hyposulphite............ 8 ounces
    Water.......................... 1 gallon
    (use at boiling temperature, brass can be immersed
    or the solution may be "painted" on)

    HARDWARE GREEN:
    Iron (ferric) Nitrate.......... l ounce (Fe(III)(No3)3)
    Sodium Thiosulfate............. 6 ounces
    Water.......................... l gallon
    (use at 160F)

    RED:
    Iron (ferric) Nitrate.......... 6 ounces (Fe(III)(No3)3)
    Sodium hyposulphite............ 6 ounces
    Water
    (use at 170F will speed up this reaction)

    BLUE:
    Sodium Hyposulphite............ 8 ounces
    Lead Acetate................... 4 ounces
    Water.......................... l gallon
    (use at boiling temperature)
    or
    Lead Acetate................... 2 to 4 ounces
    Sodium Thiosulfate............. 8 ounces
    Acetic Acid.................... 4 ounces
    Water.......................... l gallon
    (use at 180F. This color will change if
    not lacquered [Do NoT LACQUER FIREARM CARTRIDGES]
    Take your chances with the color change.)

    BLUE BLACK:
    Copper Carbonate............... 1 pound
    Ammonium Hydroxide............. l quart
    Water.......................... 3 quarts
    (Add the water after the carbonate and hydroxide
    have been mixed. There must be excess Copper
    Carbonate. Use at 175F. This color can be fixed
    (made more permanent) by quickly dipping in a 2.5%
    Sodium Hydroxide solution.)

    BLACK:
    Ammonium Hydrosulfide........... 2.25 ounces
    Potassium sulfide............... 1 ounce
    Water........................... 1 gallon
    (use at room temperature or COOLER for best results)


    BROWN:
    Potassium Chlorate.............. 5.5 ounces
    Nickel Sulfate.................. 2.75 ounces
    Copper Sulfate.................. 24 ounces
    Water........................... 1 gallon
    (use at boiling temperature)



    SAFETY:
    1. NEVER taste any of these chemicals.
    2. Keep very far out of the reach of children.
    3. Most Nitrates are good oxidizing agents and
    should not be stored with anything flammable.
    4. Acetic Acid has a VERY strong pungent odor.
    Use in well ventilated areas. This acid can
    be airborne in vapor form. If you feel that
    you have breathed enough of it to feel
    uncomfortable, leave the area and drink a
    carbonated soft drink. "Have a Coke" Do not
    underestimate this chemical.
    5. Many of these chemicals may stain your skin or
    clothing. Wear rubber gloves and protective
    clothing including glasses of some sort.
    6. Steam can cause serious burns. Solutions of salts
    can actually exceed the boiling point of water.
    The steam from these solutions can be very dangerous.
    BE CAREFUL WITH STEAM AND BoILING SoLUTIoNS.
    7. Feel free to change concentrations for experimentation
    purposes but do not change the ingredients in any
    one recipe.
    8. Always be fully awake and alert around chemicals.

    CONVERSIONS AND INTERPRETATIONS:
    Ounces are assumably troy ounces, even when dealing
    with liquids or solutions. Do not use fluid ounces.
    1 ounce = 31.103 grams = 480 grains
    1 quart = 0.25 gallon = 946.4 mL
    1 gallon = 3.78S L

    REFERENCES:

    Meyer, Walter R. title: Plating and Finishing Guidebook
    ninth edition - 1940 pp.72-75 (cited)

    Metal Finishing Guidebook-twenty-eighth edition - 1960
    article by Hall, Nathaniel
    Title: Coloring of Metals pp. 477-479 (cited)

    Krause, Hugo title: Metal Coloring and Finishing

    Hiorns, A. H. title: Metal Coloring

    Field, S and Bonney, S.R.
    title: Chemical Coloring of Metals (not cited)
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