The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old December 29, 2012, 09:45 PM   #1
barnbwt
Senior Member
 
Join Date: May 17, 2012
Posts: 705
Anyone here ever make a bullet mold?

Bullet molds seem like simple enough contraptions; two well-faced blocks of metal with alignment pins, and a centered cavity milled where they meet.

I've seen how-to's using mills and lathes, but surely (surely) folks back-in-the-day didn't always have access to such tools, but built functional molds nonetheless. Is there any way to make a bullet mold with lube grooves without heavy machinery?

Thanks, all

TCB
__________________
"I don't believe that the men of the distant past were any wiser than we are today. But it does seem that their science and technology were able to accomplish much grander things."
-- Alex Rosewater
barnbwt is offline  
Old December 31, 2012, 01:54 AM   #2
barnbwt
Senior Member
 
Join Date: May 17, 2012
Posts: 705
Anyone even tried this?
__________________
"I don't believe that the men of the distant past were any wiser than we are today. But it does seem that their science and technology were able to accomplish much grander things."
-- Alex Rosewater
barnbwt is offline  
Old December 31, 2012, 02:17 AM   #3
snuffy
Senior Member
 
Join Date: May 20, 2001
Location: Oshkosh wi.
Posts: 2,780
Bullet molds made the old way are made using a cherry. The cherry looks just like the bullet, but is made like a milling cutter.

A special vise is used that has 2 moveable jaws, both move inwards toward each other to end up centered below the cherry. The mold blocks are mounted to those vice jaws, with the faces lined up perfectly so they close exactly as the center of the mold faces are directly under the cherry.

As the mold blocks close on the rotating cherry, the bullet cavity is cut into each block.

Modern molds are made with CNC milling machines that have a complicated programs written to do all the machining on every aspect of the mold.

If what you're asking is; can you make a mold at home with a simple drill press? Then the answer is no.
__________________
The more people I meet, the more I love my dog

They're going to get their butts kicked over there this election. How come people can't spell and use words correctly?
snuffy is offline  
Old December 31, 2012, 03:38 AM   #4
Bake
Senior Member
 
Join Date: November 11, 2012
Posts: 237
You might try Googleing or Binging "Paper Patch Bullets". A few years ago I made some shotgun slugs by using a mold made out of hardwood. Got maybe 6 or 7 before it started to burn.
Bake is offline  
Old January 1, 2013, 02:00 AM   #5
barnbwt
Senior Member
 
Join Date: May 17, 2012
Posts: 705
Centering vise; interesting. The only other "how to" I'd seen was a guy using a boring cutter (cutter mounting offset to the shaft) on a mill--sounded like it caused horrific noise/vibration (probably makes good quality difficult) and took the guy forever to finish (he'd leave it running 45min between cutter adjustments).

I'd guess that regardless of how the mold is made, the cutter is the most crucial part of it. The DIY I saw used a home-made cutter that only had 1 "flute." He just turned the shape of the bullet and ground the shaft half-through then relieved it behind the "cutting edge." It looked like it sorta worked, if he was lucky/careful.

How good of quality (i.e. roundness) does a mold have to be for the bullet to work properly in a typical sizing die to true it up after? For when I do have access to a real milling setup

TCB
__________________
"I don't believe that the men of the distant past were any wiser than we are today. But it does seem that their science and technology were able to accomplish much grander things."
-- Alex Rosewater
barnbwt is offline  
Old January 1, 2013, 02:37 PM   #6
erikk
Member
 
Join Date: October 2, 2012
Posts: 19
When I was 9 made a gang mold from oak for my sling shot :-) When I started reloading for real I buy commercial molds-usually LEE cause I like them & they are inexpensive
erikk is offline  
Old January 1, 2013, 05:50 PM   #7
FrankenMauser
Senior Member
 
Join Date: August 25, 2008
Location: 1B ID
Posts: 6,855
Accurate Molds uses a CNC lathe for all of his molds.

He preps the blocks, makes his relief cuts, and pre-drills the pilot holes.

When an order comes in, he writes the code, clamps the blocks in a custom hydraulic chuck, loads the code in the machine, and lets 'er rip.

He has 2 tools for bullet molds, in his shop:
CNC mill (only uses a fly cutter and 2 other bits)
CNC lathe (only uses four cutting tools, two of which are for brass)

That's it.


If you can prep your blocks on the lathe, you don't even need the mill.
__________________
"Such is the strange way that man works -- first he virtually destroys a species and then does everything in his power to restore it."
FrankenMauser is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:20 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.07111 seconds with 9 queries