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bullet size vs alloy (Read 4669 times)

Rich_Siegel Full Member Offline Posts: 177 Location: Maine Joined: Feb 6^th, 2006	bullet size vs alloy Dec 9^th, 2014 at 3:37pm	Print Post
	How much will cast bullet diameters be effected by alloys? Will a softer alloy or straight lead cast a smaller or larger bullet then say a 1 to 20 tin/lead alloy? Thanks. Rich


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Flyer Ex Member	Re: bullet size vs alloy Reply #1 - Dec 9^th, 2014 at 4:54pm	Print Post
	Alloy equals larger in my experience.


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Kurt_701 Frequent Elocutionist Offline Posts: 1050 Location: Missouri Joined: May 20^th, 2004	Re: bullet size vs alloy Reply #2 - Dec 9^th, 2014 at 5:12pm	Print Post
	In my experience the harder the alloy, the mold will throw a larger bullet. Lyman #2 alloy will be larger than 30/1. Straight linotype will be bigger yet. We are talking small differences. Kurt

	M-14 3rd Battalion 27th Marines RVN 68'69'
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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: bullet size vs alloy Reply #3 - Dec 10^th, 2014 at 8:53am	Print Post
	If we are talking lead / tin alloys the differences are minimal Between lets say 20:1 and 40:1 we are talking .0001s of an inch. If you tell your mold maker to scale your mold for .25:1 the difference will be quite small when going up and down looking for an optimal temper. Lead / Tin / Antimony shrink much less than Lead / Tin, that is the up side. The down side is that L/T/A/ alloys almost always leave voids as they cool and solidify. Linotype was designed to give minimum shrinkage in the linotype machine as too much shrinkage would give a light strike in the press. 40 Rod


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SSShooter Frequent Elocutionist Offline Posts: 2942 Location: Southern NJ Joined: Aug 1^st, 2010	Re: bullet size vs alloy Reply #4 - Dec 10^th, 2014 at 9:59am	Print Post
	Harder the alloy the lighter the bullet if that makes any difference to you. With my 40cal bullets can make the difference of a couple of grains going from 30-1 to 20-1.

	Glenn - Stevens 044 1/2, Bartlein SS 5R barrel in 22LR
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noylj Participating Member Offline Posts: 16 Joined: Feb 22^nd, 2014	Re: bullet size vs alloy Reply #5 - Dec 10^th, 2014 at 6:38pm	Print Post
	As you add tin and antimony, the cast bullet will be larger in diameter and lighter in weight. As temperature varies, you will also get variation. Some may disagree, but if you don't flux regularly, you will get variation.


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frnkeore Frequent Elocutionist Offline Posts: 7601 Location: Central Point, OR 97502 Joined: Jun 16^th, 2010	Re: bullet size vs alloy Reply #6 - Dec 10^th, 2014 at 7:53pm	Print Post
	This may be what your looking for. In my experiance, WW and 22/1 are within .0002 of each other with 22/1 casting the larger size. Frank

	ASSRA Member #696, ISSA Member #339
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Rich_Siegel Full Member Offline Posts: 177 Location: Maine Joined: Feb 6^th, 2006	Re: bullet size vs alloy Reply #7 - Dec 11^th, 2014 at 10:24am	Print Post
	Thanks for your help guys. Rich


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