Recent content by ikeda

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    Reproofing a BPE rifle to NE?

    A very interesting video featuring the anatomy of the ".500 Nitro Cartridge for Black Powder express rifles."
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    British double rifle gauge to caliber conversion

    The problem is that my 40 gauge is not .488" it is .497" bore diameter, and .505" groove diameter....go figure.
  3. I

    Reproofing a BPE rifle to NE?

    Like I said, I have no way of knowing what was actually asked or agreed to. During this discussion you originally mentioned only arsenic, now you say you asked for arsenic, antimony, "other alloys" and heat treatment . So which is it? But I repeat...what I do know is that Hawk has always...
  4. I

    Reproofing a BPE rifle to NE?

    Obviously I have no way of knowing what you asked for, or if what you asked for would perform satisfactorily, nor do I know what Hawk delivered. But what I do know is that Hawk has always delivered exactly what I asked for in a timely manner.
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    Reproofing a BPE rifle to NE?

    But Hawk doesn't use linotype or any other alloy. They use essentially pure lead, which is barely affected by the addition of arsenic.
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    Reproofing a BPE rifle to NE?

    Arsenic (As) Melting point, 1,503o F. Arsenic is a catalyst to heat treating Pb/Sb alloys and only a trace is required (¼ to ½ of 1%). Arsenic in itself does little to harden the alloy. Tin and/or antimony are added to lead (~2% to ~5%) to increase its strength and hardness. In the as cast...
  7. I

    British double rifle gauge to caliber conversion

    My .505" 440 gr Hawk bullets arrived and here are the results so far. 50gr SR4759 1743 fps 56gr Accurate 5744 1744 fps 59gr IMR 4198 1634 fps 61gr IMR 4198 1723 fps Estimated pressure of the loads are less than 9.0 Tons Hopefully I'll have a chance to do some...
  8. I

    Reproofing a BPE rifle to NE?

    Did you say arsenic, but mean antimony?
  9. I

    Reproofing a BPE rifle to NE?

    Thanks for the advice. A practiced hand can tell lose and tight spots in the bore. A pin gauge tells you nothing about the groove diameter.
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    Reproofing a BPE rifle to NE?

    This method is the only way I know of that will give you the groove diameter. It also allows you to check the bores for tight or loose spots along the length of the barrel.
  11. I

    Reproofing a BPE rifle to NE?

    Nope....I used lead slugs driven through the barrels and measured very carefully with a dial caliper.
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    Reproofing a BPE rifle to NE?

    Woodleigh is a very good bullets but the 440 gr and 450 gr bullets are too large diameter for my gun. Fortunately, I’ve had very good luck with Hawk. They made some thin (.025”) jacketed 400 gr .466” diameter bullets for my sons 577/450 that he used in Namibia and they were great…also made...
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    Reproofing a BPE rifle to NE?

    It is obviously important to have access to a chronograph. My new gun 440 gr Hawk RNSP, .505" diameter. Hornady 3" brass, Rem 9 1/2 Mag primers with a wad, shot from 25.875" long barrels. 50 gr. SR 4759 1743 fps 56 gr. Accurate 5744 1744 fps 59 gr 4198...
  14. I

    Africa hunting ammunition use

    I can't remember ever shooting an animal with factory loads. Of course I've hunted most of my animals with antique Winchesters. Not too many factory loads available out there for 38-72, 40-82, 50-110, 33 Winchester, 577/450, etc.
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    British double rifle gauge to caliber conversion

    The grooves seem to be a quite conventional square shape....the barrel has 6 grooves. Interesting observation....the left barrel seems to have been shot a lot more than the right, which generally goes against the common perception of the right barrel getting shot the most.
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