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Rifles, Reloading, Optics, Equipment
Reloading
Old Bullets OK
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<blockquote data-quote="HaroldNRAEndowment" data-source="post: 1746248" data-attributes="member: 111610"><p>I would say they are OK with an assumption that all jacketed bullets use pure lead for the core material. That being said back in the late 70's Early 80's I was thinking about casting my own bullets out of lead and one cannot use pure lead once the velocity reaches a certain point due to the softness and possibility of the lead melting and stripping off the bullet and leaving blobs of lead in the barrel which would be devastating for the next shot. The solution is to make an alloy made of lead and antimony. The article I read, please correct this if the article was wrong, said that over a period of time the antimony would start migrating within the bullet and start separating from the lead and create balls of crystallized antimony within the lead. The bullet would no longer be considered a uniformly homogenized alloy. I am not sure if homogenized is the correct word, however the lead would be soft and the globs of antimony would be like abrasive pieces in the soft lead. Now when we think about a jacketed bullet the jacket would protect the bore, but under those circumstances the core material would not be in the state it was designed to be. The Big Question is, Do All Jacketed bullets use pure lead Or do they use a lead alloy. Even if they use a lead allow the next question would be is the alloying metal antimony. This is an article I read many years ago and the general information is correct, but I hope I did not make a miss-statement on the alloying metal used. At that time I chose not to cast my own lead alloyed bullets due to the infrequency I was shooting.</p></blockquote><p></p>
[QUOTE="HaroldNRAEndowment, post: 1746248, member: 111610"] I would say they are OK with an assumption that all jacketed bullets use pure lead for the core material. That being said back in the late 70's Early 80's I was thinking about casting my own bullets out of lead and one cannot use pure lead once the velocity reaches a certain point due to the softness and possibility of the lead melting and stripping off the bullet and leaving blobs of lead in the barrel which would be devastating for the next shot. The solution is to make an alloy made of lead and antimony. The article I read, please correct this if the article was wrong, said that over a period of time the antimony would start migrating within the bullet and start separating from the lead and create balls of crystallized antimony within the lead. The bullet would no longer be considered a uniformly homogenized alloy. I am not sure if homogenized is the correct word, however the lead would be soft and the globs of antimony would be like abrasive pieces in the soft lead. Now when we think about a jacketed bullet the jacket would protect the bore, but under those circumstances the core material would not be in the state it was designed to be. The Big Question is, Do All Jacketed bullets use pure lead Or do they use a lead alloy. Even if they use a lead allow the next question would be is the alloying metal antimony. This is an article I read many years ago and the general information is correct, but I hope I did not make a miss-statement on the alloying metal used. At that time I chose not to cast my own lead alloyed bullets due to the infrequency I was shooting. [/QUOTE]
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Old Bullets OK
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