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Lead ? (Read 10015 times)

don1885 Senior Forum Member Offline Posts: 386 Location: East Tennessee Joined: Oct 31^st, 2010	Re: Lead ? Reply #15 - Dec 14^th, 2016 at 10:02pm	Print Post
	Be pretty hard Joe if you want the bearing in the same place in every bullet.

	Don ASSRA #10637
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Lead ? Reply #16 - Dec 15^th, 2016 at 1:43am	Print Post
	frnkeore wrote on Dec 14^th, 2016 at 4:10pm: +Trying to cast with zink contaminated lead, will make your hair turn gray, and then, fall out (huh, Bob?) Frank

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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Cat_Whisperer Frequent Elocutionist Offline No 1, 9.3x74R Posts: 3987 Location: Mountains of Virginia Joined: Apr 17^th, 2004	Re: Lead ? Reply #17 - Dec 15^th, 2016 at 6:59am	Print Post
	RayH wrote on Dec 14^th, 2016 at 9:49pm: Carefully considering all the responses to my inquiry, and after having communicated with RotoMetals, I have come up with the following: RotoMetals makes "scuba weights" as sold by many dive shops. They are made of an antimony/lead mix. "Antimonial lead" is offered by them at approx. 2/3 the price of 20:1 certified lead:tin - (ie. cheaper) - and it is harder than 20:1. It's composition is 95-97% lead: 3-5% antimony. My conclusion is that I'm better off using a known, certified 20:1 for my precision casting. The scuba weights, wheel weights, etc. are fine for high volume production and might be suitable for bulls eye hand gun and the like. Thanks to all for your input. My inquiry is satisfied. You've got a grip on it. Hardness of bullet matched to the application - as well as precision matched to the application. I have 30:1 (one 300 lb batch that becomes 20:1 (by adding a little tin) and about 400 lbs of WW:tin (8%tin) and a couple hundred lbs of linotype. 3 different applications. It took melting each batch in one huge pot and then having a sample of each analyzed.

	Cat Whisperer (trk) Chief of Smoke Pulaski Coehorn Works and Skunk Works Drafted May 1970, Retired Maj. U.S.Army assra #9885
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40_Rod Frequent Elocutionist Offline Extremism in the persuit of accuracy is not a vice Posts: 4285 Location: Knoxville, TN Joined: Apr 20^th, 2004	Re: Lead ? Reply #18 - Dec 15^th, 2016 at 9:25am	Print Post
	My advice is to sell it to some pistol shooter and use the money to buy lead of a known alloy. While Roto metals uses that formula for dive weights who knows what is in the ones that you have. Buying Linotype is dodgy enough I can find at least 3 different formulas for Lino, and can tell you that if the metal came from a commercial printer Lino and monotype are mixed indiscriminately. Wheel weights? A complete crapshoot as to what you will get. 40 Rod


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QuestionableMaynard8130 Frequent Elocutionist Offline Posts: 4144 Location: Benton Harbor MI Joined: Apr 17^th, 2004	Re: Lead ? Reply #19 - Dec 15^th, 2016 at 10:29am	Print Post
	IF you got scuba weights from Roto-metals them are probably OK BUT there are bunch of them floating (so to speak) around--I must have a dozen or more. I have my own old set plus others I acquired that I KNOW we cast up ourselves. The cheap open top molds were available a Diver's supply shops and many shops also cast and sold their own too. I doubt may of us divers were concerned about alloys -----availability and cost were the drivers so I know of no one who ordered them from roto-metals. we could get the mold for 20 bucks and in those days buckets of wheel weights, dead car and tractor batteries etc were pretty much free for the asking. Personally Id save them for pistol bullets ---- and hope and pray there was no zinc contamination to screw up my lead pot.

	sacred cows make the best burger
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BP Frequent Elocutionist Offline Posts: 8039 Location: Westside Joined: Aug 27^th, 2006	Re: Lead ? Reply #20 - Dec 15^th, 2016 at 2:15pm	Print Post
	Soft pouches filled with shot were easier to adjust, and more comfortable.

	There are three kinds of men: The ones that learn by reading, the few who learn by observation, and the rest who have to pee on the electric fence and find out for themselves. Proud Noodlehead
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Schuetzenmiester Frequent Elocutionist Offline Posts: 6707 Location: Cool Wet Side of WA Joined: Apr 27^th, 2008	Re: Lead ? Reply #21 - Dec 15^th, 2016 at 11:56pm	Print Post
	QuestionableMaynard8130 wrote on Dec 15^th, 2016 at 10:29am: Personally Id save them for pistol bullets ---- and hope and pray there was no zinc contamination to screw up my lead pot. They are easy to check. Put them in a solution of water and chlorine. If zinc is present, you will see little zinc oxide bubbles.

	"some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence
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