Author Topic: does anyone know mathmatic formula for dilution of lead  (Read 675 times)

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Offline mstake

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does anyone know mathmatic formula for dilution of lead
« on: February 08, 2013, 02:04:10 AM »
does anyone know the mathmatic formula for lead dilution?  10lbs of pure - 2lbs 70%/30% lead/antimony - 1lbs of 50/50 = 94-4-3 alloy mix.
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Offline res45

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #1 on: February 08, 2013, 02:21:44 AM »
This is what I use,you will need either Microsoft Excel or OpenOffice Calc. When I finally ended up getting a hardness tester and check my bullets I had cast for alloys I mixed form PB,WW,Lino,Tin it matched up within one or two BHN of what the calculator showed.

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

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #2 on: February 11, 2013, 01:32:37 AM »
thanks but i allready have that kind of data. i  just wanted to know how to caculate it mathmatically.
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Offline mstake

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #3 on: February 12, 2013, 05:57:59 AM »
found out how its done. 10 lbs lead + 2lbs 70%30% lead /antomony + 1 lbs 50%- 50% lead tin = 91.5%lead 4.62%antamony 1.9% tin
                                                   
                                                    13lbs of total alloy
                     
                                        10 lbs of lead X 100%= 10
                             70%lead in 2lbs lead/ant= 2 lbs x 70%= 1.4lbs of lead
                              50% lead in 1lbs lead/tin= 1lbs x 50%= 0.5 lbs of lead
                             ---------------------------------------------------------
                                     10 + 1.4 + 0.5 = 11.9 lbs of lead / 13 lbs total alloy = 91.5% lead in 13 lbs
 
 
part 2                               2lbs x 30% antomony = 0.6lbs of antomony / 13lbs of total alloy= 4.62% antomony
part 3                               1lbs x 50% tin           = 0.25lbs of tin / 13lbs of total alloy = 1.92% of tin
 
                                                     91.5% + 4.62% + 1.92%=  98%% of 13lbs alloy mix
 
Just had to find out how they did that!
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Offline SHOOTALL

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #4 on: February 12, 2013, 06:51:59 AM »
Lyman #2 was 20 lb lead 1 lb 95/5 soder so I have been told . That was old and back before soder was changed to meet plumbing codes and EPA regs . 95/5 was tin/lead . So if you get a stash of old soder , yard sale comes to mind it might contain no antomony or very little. Pretty easy to tell when it melts it looks gritty .
If ya can see it ya can hit it !

Offline mstake

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #5 on: February 12, 2013, 07:57:18 AM »
Shootall it might very well be. this amount was just something i came up with for the math formula to put on here and i could compare my answer to the excel table that will calculate it for you as mentioned by res45.
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Offline SHOOTALL

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #6 on: February 12, 2013, 08:01:33 AM »
I would not begin to know the math involved . It was in an old reloading book and others have qouted it. If I remember it was for harder bullets. Then also if you want antonomy you can add magnum bird shot as it has it in its mix.
If ya can see it ya can hit it !

Offline mstake

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Re: does anyone know mathmatic formula for dilution of lead
« Reply #7 on: February 12, 2013, 09:16:44 AM »
sorry i corrected my numbers to match up with the original question.
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