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Old 05-29-2020, 08:18 AM   #21
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As far as aluminum in general, another issue is simple density; mass per volume (ie, weight of a given size projectile). Since we’re talking about keeping bullet weights light for velocity purposes, let’s start with a lightish 9mm bullet for beginning reference.

A bullet that weighs 115 grains in lead, will weigh around 68-69 grains in zinc. The same bullet will weigh just 28 grains in aluminum. You could push it really fast (remember my postings about extremely-lightweight handgun bullets..?), but it would only be good for extremely close-in use. While most defensive use is extremely close, not ALL of it is. You could be facing an active shooter from across a mall food court, yards away down the aisle of a store, etc. And that light of a bullet, with that poor a sectional density, simply won’t maintain repeatable, predictable POI at any but bedroom distances.

Per QuickLoad software, the 69 grain bullet (115-grain mold, cast in zinc), loaded with Bullseye or even TiteGroup to within normal 9mm+P specs will hit around 1700-1850fps depending on barrel length. If further velocity increase is desired, a simple solution would be to start with a mold intended for a lighter bullet to begin with. Using a 95-grain mold as a starting point would give a 57-grain zinc bullet, which (according to QuickLoad) will hit 1800fps even from a 3" gun, and 1,996 fps from a 5".

Simple, clean, no Dremel required, and will actually fly true substantially further than the 23-28 grain aluminum version would...
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Old 05-29-2020, 08:48 AM   #22
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He would rather spend hours or weeks making inaccurate bullets.
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Old 06-02-2020, 06:11 PM   #23
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Quote:
Originally Posted by John in AR View Post
That could certainly work. There are multiple approaches; two of which listed below:

Option A (your approach):
- Buy aluminum rod and cut it into sections,
- Spin one of the sections in a drill, and using a Dremel, by hand, sand it down while continually checking diameter with calipers, until you get it sanded down to within three one-thousandths of an inch of desired diameter,
- Switch from the Dremel to a file-backed crocus cloth, and continue to sand, again continually checking diameter with calipers until you get to the exact 0.001” tolerance desired,
- Shape one end of the sanded-down aluminum rod into a bullet shape,
- Cut it to desired length
- Drill a hollow cavity into the base


Option B:
- Melt free zinc in a $2 consignment store pot,
- Dip the melted zinc from the pot into a bullet mold with a small ladle or large spoon,
- Drop the finished bullets out of the mold

In what way is Option A the “MUCH easier” approach…?
try it. after they retrieve your dead body, from the fumes, somebody can explain it to your survivors. Zinc, under normal conditions. is extremely difficult to cast. it oxidizes more than melts. I tried it with some pennies, and it sucked a big one. I had a huge fan behind me and a gas mask and was using an oxyacetylene torch to minimize my exposure to the fumes. never did get a filled out mold cavity and I highly doubt anyone ever could.
 
 
Old 06-02-2020, 07:59 PM   #24
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Originally Posted by boati View Post
...never did get a filled out mold cavity and I highly doubt anyone ever could.
I believe that to be completely true. I mean, I believe it’s true that you couldn’t cast a zinc bullet, and so you don’t believe anyone else can either.

You’re wrong, of course. You can see cast zinc 223 bullet tested in gel if you spend twelve seconds searching reloading forums or even just youtube.

To assume that a task or project is inherently impossible just because you personally haven’t taken the time to learn how to do it, is adolescent at best.

https://thereloadersnetwork.com/2019...ts-to-bullets/

 
Old 06-03-2020, 03:06 PM   #25
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Quote:
Originally Posted by boati View Post
...I tried it with some pennies...
Curious how long ago this was..?
 
Old 06-07-2020, 09:26 PM   #26
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2004 oh, somebody could **** with it endlessly, and get it done. I should have said that i know damned well YOU never will, so you're just blowing smoke about how easy it is.
 
Old 06-08-2020, 05:15 AM   #27
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Originally Posted by boati View Post
2004 oh, somebody could **** with it endlessly, and get it done. I should have said that i know damned well YOU never will, so you're just blowing smoke about how easy it is.
You're so cute.

Of course, I never said I was going to do it; you brought up the topic, not me. I just pointed out the undeniable fact that people already have done it. Successfully. On video.



Quote:
Originally Posted by boati View Post
how would you increase density? you're stuck with the same size if casting and can't increase length much with auto loaders, due to box mag size limits...
Quote:
Originally Posted by boati View Post
it's MUCH easier to just turn such bullets out of aluminum rod, which you can buy at any lowe's or Home Depot...
So you worry that zinc doesn't have enough density, and then less than an hour later you recommend using a material with HALF the density. Think about that for a bit.
 
Old 06-09-2020, 12:01 PM   #28
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Quote:
Originally Posted by John in AR View Post
You're so cute.

Of course, I never said I was going to do it; you brought up the topic, not me. I just pointed out the undeniable fact that people already have done it. Successfully. On video.







So you worry that zinc doesn't have enough density, and then less than an hour later you recommend using a material with HALF the density. Think about that for a bit.


I'm really seeing a pattern around logic and reasoning on this site...
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Old 06-09-2020, 12:49 PM   #29
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Originally Posted by Dorobuta View Post
I'm really seeing a pattern around logic and reasoning on this site...
I won't say anything mean, but if you've ever seen the movie "Erik the Viking", think back to the scene with the invisibility cloak. I'm sometimes reminded of that scene, where Tim Robbins thinks he's invisible and so is running around like a lunatic while everyone else is just sitting back, watching the absuridy play out.

That really is the image I get sometimes.
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Old 06-10-2020, 12:27 AM   #30
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Honestly it just boils down to prison yard Jack jaw BS type statements and proven ineptitude in carrying out Rube Goldberg style methods to achieve mediocre results.
Spammed for roughly twenty years across a few firearms and prepper forums only interrupted by enforced vacations to Club Fed.
 
Old 06-25-2020, 07:30 AM   #31
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Got another bucket of cast-off wheelweights yesterday when my truck had brake work done. Another 136 lbs raw (most are 120-125 lbs), which should turn into 98-105 lbs of usable lead for casting. At a ratio of 90% 124-125 grain bullets and 10% 230 grain bullets, that's enough lead for around 5300 or so; gotten free from a local shop.

That puts my total wheelweights on hand at 873 lbs, which represents around 630-645 lbs of usable lead once smelted down into muffin-pan ingots; plus a hair over 600 lbs already ingoted. Total of ~1230 lbs, with out of pocket cost less than $300, and most of that is because I one time bought 200 lbs of clean lead at a scrap yard. If it weren't for that impulse buy, it would be around 1000 lbs for around $100.

Worth asking at your local tire shops and mechanic shops, if you don't mind spending the time to sort & melt them down, which really isn't that much if you do it in batches. I'm thinking next time I sort a batch I may keep the zinc ones rather than pitching them. May (or may not) experiment with zinc bullets one of these days if life ever calms down some. Don't really know if it'd be worth the hassle, since I'd want to use a different casting pot and different mold(s) as well.

I may also be done collecting lead at this point, even if free. What's on hand represents enough for over 5,000 bullets a year into my 70's, which may be all the casting I'm likely to do.

Last edited by John in AR; 06-25-2020 at 07:33 AM.
 
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