Welcome guest, is this your first visit? Create Account now to join.
  • Login:

Welcome to the NZ Hunting and Shooting Forums.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed.

Terminator DPT


User Tag List

+ Reply to Thread
Page 3 of 3 FirstFirst 123
Results 31 to 35 of 35
Like Tree39Likes

Thread: Help Offered – Range Contamination

  1. #31
    MIA somewhere in Nam 300CALMAN's Avatar
    Join Date
    Dec 2014
    Location
    Reluctantly JAFA
    Posts
    2,085
    Name:  edible20lead20paint.jpg
Views: 121
Size:  81.9 KB
    Angus_A and gonetropo like this.

  2. #32
    Cook Angus_A's Avatar
    Join Date
    Sep 2012
    Location
    Wellington
    Posts
    1,200
    Quote Originally Posted by 300CALMAN View Post
    I have always wanted to give powder coating a go. Using something like this:

    https://www.harborfreight.com/10-30-...tem-94244.html

    Coincidental it will probably slow down corrosion of the projectiles

    Weather you believe lead is toxic or not your local council is convinced so that is a problem. Anyway I have been involved in the investigation and clean up of a few and yes some of them probably have enough lead to mine.

    I am off to the range with my sieve.
    Need a hand? Sounds like fun
    "A party without cake is just a meeting" - Juila Child

  3. #33
    Member Boaraxa's Avatar
    Join Date
    Jul 2014
    Location
    Southland
    Posts
    805
    Quote Originally Posted by Maca49 View Post
    There must be some seriously lead contaminated land in the UK with hundreds of years of lead shot. How serious is the situation in NZ? or is it just a perceived prob. I can understand a little the inside ranges, but thats contained and can be managed and Ive only ever know one person with diagnosed lead poisoning, did shit loads of .22 inside range shooting. I used to eat lead paint off my toys as a baby and always had my mouth full of lead slugs in my teens, made thousands of lead projectiles and my old mate has cast thousands more than me, with yearly tests for lead poisoning and never had a negative result, the doc concluded the tests were as waste of time.
    Maybe thats why my arse drags on the ground a bit these days?
    Are we just too PC?
    I no a section of river round these parts that takes a bit of a hammering , one day I was down looking for heavy yellow stuff instead I found pounds of lead couldn't believe it I spent a few days there quietly working away till day 5 it sounded like world war 3 & felt like it 2 , lead plopping all over the show I started dropping really loud F bombs until the shooting closest to me stopped, turns out it was a monthly gathering , shooting clays one of the traps they fire over the river can only imagine how much lead is on the downstream side.

  4. #34
    Member canross's Avatar
    Join Date
    Jan 2017
    Location
    Western Canada - Soon to be Christchurch
    Posts
    43
    If the main issue is contaminated earth berms, then a dry washer is an easy way to separate out the lead. Basically it's a gold sluice that uses air instead of water. It generally works best with dry soil, but the benefit is that you don't need a huge water supply, and you don't have to worry about runoff. If you're concerned about dust you can enclose it and run water fogging nozzles around it so that any dust that comes out is caught before it drifts. Since berms need to be rebuild semi-regularly anyways, you run the dry washer during the rebuild and move your berm back and forth each time (Assuming a range with staggered raised berms for multiple distances).

    All the lead that is pulled out gets pre-dried and liquefied in a heavy walled trough to avoid vapor explosions - a large diameter steel pipe could be gas axed lengthwise for the trough - the heavy wall should transfer enough heat to the starting end to cook the water out of the lead before it gets hot enough to liquefy, then trickles into big pot with a bottom pour spigot to pour off the lead as it liquifies. The dross and stones/sand that get in are skimmed off or left floating - as long as you never run the pot all the way down you'll have a pretty decent lead alloy.

    I should ad - I've only ever seen the dry washer used for gold mining - never built one, but have spoken with people who have and they say they're easy to make - they're just less efficient than wet sluices. They are supposed to be better than recirculating sluices. I have bulk reclaimed lead from berms using screens then refining it out using heated troughs. It works great, especially when your trough is heavy walled and wide/long enough that you can really apply heat to it and put large quantities of lead/rock through it at a time.
    Last edited by canross; 30-05-2017 at 05:19 PM.
    Wirehunt likes this.

  5. #35
    Member
    Join Date
    May 2016
    Location
    Rollerston
    Posts
    60
    i was part of a crew that striped and replaced the backstops at the navy base at the end of the whangaparaoa peninsula ,we did the 300m, 100m range and also the pistol range ,this was about 10years ago , we must have got 2 1ton bags of lead gravel mix out of that before we could dump the rest of the material in the back stops

 

 

Similar Threads

  1. Replies: 17
    Last Post: 13-02-2017, 03:10 PM
  2. meth contamination
    By northdude in forum Off topic
    Replies: 49
    Last Post: 24-04-2016, 01:42 PM
  3. A day at the range....
    By Wildman in forum Reloading and Ballistics
    Replies: 4
    Last Post: 07-08-2015, 07:30 PM
  4. been offered brno 22 in good condition
    By turner nz in forum Firearms, Optics and Accessories
    Replies: 18
    Last Post: 14-11-2012, 08:46 PM
  5. Replies: 1
    Last Post: 17-10-2012, 03:36 PM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Welcome to NZ Hunting and Shooting Forums! We see you're new here, or arn't logged in. Create an account, and Login for full access including our FREE BUY and SELL section Register NOW!!