If you�ve ever wondered about the purity of the lead/tin casting alloy you�ve mixed or purchased, there is a relatively simple process to determine the percentages. But first, using a good reloading scale, you must determine the specific gravity (SG) of the alloy. I recently received permission from SPG, Inc. to post, on my website, an article I authored on the subject. It was published in the Summer 2014 edition (Issue #86) of the Black Powder Cartridge magazine. Following is the link to the article titled, Measuring & Using Specific Gravities of Lead Alloys: http://www.texas-mac.com/Measuring_and_Using_Specific_Gravities_of_Lead_Alloys.html.

Wayne

Very nice, and thank you for posting it!

I recall that method, but it is nice to be able to have it in the computer and not just in old paper magazines!

John

Excellent article and thanks for increasing my knowledge.