It is currently Sat Oct 21, 2017 8:30 pm


All times are UTC - 8 hours



Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: An odd mix ...................
PostPosted: Sun Jul 02, 2017 10:46 am 
Offline
Master Lieutenant General
Master Lieutenant General

Joined: Tue Dec 28, 2004 4:04 pm
Posts: 12640
Location: South of the north pole in the land of falling waters
I recently had some scrap alloy analyzed for content , I'd melted the stuff over twenty years ago and left a note on the pile . The note said 3% meaning I thought it was three percent antimony .

The XRF gun told the tale though the scrap had ;
96.95 lead
1.59 Antimony
.95 tin
.34 titanium
.12 steel
.048 copper

Air cooled samples measure nine BHN and after three days measured almost ten and a half . I tried a oven heat soak then water quench on the same samples and after three days they measured sixteen BHN . Don't know yet what the final age hardening will be but I was VERY surprised to see these results .

Jack

_________________
Buy it cheap and stack it deep , you may need it !

Black Rifles Matter


Top
 Profile  
 
 Post subject: Re: An odd mix ...................
PostPosted: Mon Jul 03, 2017 4:50 am 
Offline
First Lieutenant
First Lieutenant

Joined: Wed Nov 22, 2006 10:47 am
Posts: 237
If it gets harder, the longer it sits, I wonder if it will get brittle at some point? Or so hard it won't "mold" to the lands in the barrel when fired?

Interesting.

_________________
Shooting- the only sport endorsed by the Founding Fathers.


Top
 Profile  
 
 Post subject: Re: An odd mix ...................
PostPosted: Sun Jul 09, 2017 12:16 pm 
Offline
Master Lieutenant General
Master Lieutenant General

Joined: Tue Dec 28, 2004 4:04 pm
Posts: 12640
Location: South of the north pole in the land of falling waters
It measures eighteen or nineteen now and I'm thinking it isn't going to get a lot harder than that . The hardest heat treated lead I've ever heard of was about thirty BHN . Now , considering that jacketed bullets are almost four times that hard , one should be to concerned about the bullets going through the barrel .

When loading lead , bullet fit to the throat is of the utmost importance . Using the right alloy , powder and primer factor in heavily for good results too . I tried a few the other day in the .223 with eight point two grains of Unique and it was woodchuck accurate . Good for practice but I'll still use jacketed bullets when hunting I think .

Jack

_________________
Buy it cheap and stack it deep , you may need it !

Black Rifles Matter


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group