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How do i calculate the pressure needed ?


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#1 Guest_PyroPDC_*

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Posted 25 June 2009 - 12:00 PM

Could someone tell me what calculation I need to do to work out what pressure i need to apply to my 2" pucks to get to density of 1.7 grams/cc.


Also a 2" black powder puck, How many grams powder would you recommend.


#2 Bonny

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Posted 25 June 2009 - 01:54 PM

Could someone tell me what calculation I need to do to work out what pressure i need to apply to my 2" pucks to [font="arialhelvetica"][size=-1]get to density of 1.7 grams/cc.


The pressure is not important, you need to calculate the volume of the finished puck (with a known weight of DRY powder). Area of 2" puck is 20.25 cm2. If you make the puck 1" thick (2.54cm) then the volume is 51.435 cm3 x 1.7g= 87.44g of BP needed.

#3 Guest_PyroPDC_*

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Posted 25 June 2009 - 02:54 PM

The pressure is not important, you need to calculate the volume of the finished puck (with a known weight of DRY powder). Area of 2" puck is 20.25 cm2. If you make the puck 1" thick (2.54cm) then the volume is 51.435 cm3 x 1.7g= 87.44g of BP needed.


thank you for working that out for me. 87.4g im just imaging that igniting while being compressed :o .


well i took plunge and pressed one out at 6 tons.
Posted Image

Posted Image

very impressed with the finished product. will give it a couple of days to dry, and will post if my black powder has improved

Edited by PyroPDC, 25 June 2009 - 02:57 PM.


#4 Guest_PyroPDC_*

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Posted 26 June 2009 - 09:15 PM

well after a few tests of pyro golf i can now say im very happy with my black powder. up till now my shells have been quite low breaks so now i have improved by lift powder that should fix that problem.

though the press was not cheep i think it was a nesassery tool to move me forward to the next level.


thank you everybody for all the help so far




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