Casting alloy

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  • 2014-07-08 at 02:56 #487425
    jameswilson
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      Howdy,i have been using the medical lead containers and ww for all of my casting,adding some lino as needed for fill out.
      The other day i was reading Pet Loads by MR.Waters and for the 45-70 he was casting 7 parts lino and 5 parts soft lead.
      The question is will it be harder that the ww/container mix that i am using now?

      Thanks for any replys.

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    • 2014-07-08 at 02:59 #492031
      brandonbooth
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        To answer that, you’d need to know the exact recipe that you are currently using.

        http://castboolits.gunloads.com/showthread.php?105952-Lead-alloy-calculators

        This should help.

        2014-07-08 at 05:35 #492032
        michaelburns
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          I calculate that the resulting alloy will be 9.3% antimony and 2.3% tin. Probably of the order of 17-20 BHN, which is still mighty hard alloy (I cast approximately .8% antimony 1.5% tin, BHN 10-11 for revolvers, which approximates 12:1 lead: tin.) Remember that Elmer Keith thought 10:1 was already very hard for long range 44’s.

          2014-07-08 at 09:21 #492033
          adamsutherland
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            For velocities up to about 1800 fps (depends on the firearm and bullet in question) I shoot range scrap thinned with lead flashing/pipe for a BHNS of around 12. I find softer works better than hard. When going over 1800 fps I prefer a tougher alloy not a necessarily harder alloy.

            2014-07-10 at 15:41 #492034
            jameswilson
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              Thanks for the reply’s.
              I was just wondering would it make a good hunting alloy or should i just continue with the stuff i am shooting now.

              It just seemed to me to be a lot harder than is needed for deer hunting.
              Been pushing the mix i use now to just below 2000 in my Marlin in 45-70 and they seem to be accurate out to 125 yards.
              The same mix is used in my 41 mag rifle and it works great to 1900+.
              I do use 2500+ lube and love it. 

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