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nuclearcricket
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adjustable PP mold
Aug 18th, 2024 at 9:31am
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I have a question for those that are casting with an adjustable Paper patch mold. I have one from BACO, its a .44 cal PP bullet. It does make a very nice bullet but I am having problems keeping the base plug hot enough for it to fill out to  a sharp edge. My allow is in the 30-1 range running at about 750 deg. If I am casting with 2 molds, I get very pretty bullets but often the base has a flaw. If I just use one mold the bullets will often be frosted but with a much better base. Any suggestions would be greatly appreciated.
Sam
  
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SBoomer
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Re: adjustable PP mold
Reply #1 - Aug 18th, 2024 at 11:29am
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Pour at 800-820F and see what happens.
  
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nuclearcricket
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Re: adjustable PP mold
Reply #2 - Aug 18th, 2024 at 12:02pm
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I will fire the pot back up this afternoon and give that a try. I need to make an adjustment on the bullet length any way so I will see if I can get them up to around 430 or so and see how they cast. Currently they are dropping out around 388 but getting a lot of weight variation. I had some heavier ones I had cast earlier and they were a lot more consistent. 
Sam
  
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Jeff Michel
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Re: adjustable PP mold
Reply #3 - Aug 24th, 2024 at 7:57pm
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Consider a hot plate, makes a big difference in keeping your mold temperatures more consistent. That and try a ladle if your not already, I don't think I ever poured a PP bullet worth a hoot from a bottom pour. Good luck and let us know of your progress.
  
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RDBallard
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Re: adjustable PP mold
Reply #4 - Aug 25th, 2024 at 1:48am
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I made up a base plug for my Steve Brooks PP adjustable mould out of stainless steel and it helped. Holds heat better
  
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nuclearcricket
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Re: adjustable PP mold
Reply #5 - Aug 25th, 2024 at 4:22pm
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The SS base plug does sound a bit interesting. I did set up and ran another casting session with just using one mold and I did get a better base fill. I even managed to load and shoot some of them. The seemed to shoot well but to be honest that is a kind of short bullet to patch. So I do need to work on refineing the patching process and do a bit of tweaking on the casting end of things as well. 
Thanks
SAm
  
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