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Author Topic: Lead Free Slug - A Guild Project  (Read 2742 times)

oneshot61

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Re: Lead Free Slug - A Guild Project
« Reply #15 on: October 05, 2016, 10:32:26 AM »
100 yards, average fps about 905? I can push it faster and its still as accurate up to 950, my top speed at my current tune. I'm just a novice at this, but 1-26 seems a bit slow, depending on what you are wanting to shoot as far as weight, length, and power desired. I know you and Mr. Travis  know a ton more than I do, but Mr. Sterne may be a great resource in your search with your current twist.

oneshot61

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Re: Lead Free Slug - A Guild Project
« Reply #16 on: October 05, 2016, 10:38:47 AM »
New picture.

nielsenammo

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Re: Lead Free Slug - A Guild Project
« Reply #17 on: October 05, 2016, 10:39:58 AM »
It is not my twist rate, I don't own a 1:26, it is the twist rate of the 30 caliber Flex.  I am pretty versed in twist rates and bullets.  the 1:26 is common for the .300 caliber pellet rifle and I have been trying to make a slug that is accurate out of it.  Being I don't own one I rely on others to test.  The testing so far has shown poor results with that barrel.  I sent Travis a new slug to try but he only just received it so no word yet.
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oneshot61

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Re: Lead Free Slug - A Guild Project
« Reply #18 on: October 05, 2016, 10:55:39 AM »
I understand. I forgot Travis's gun is a 30. I have no doubts of your abilities for sure. Your reputation precedes you as they say for your service and quality.  I am sure that with your testing, casting and swaging abilities, you will soon find the formula for that barrel-bullet weight and it will a hit :)

cpt_sfc

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Re: Lead Free Slug - A Guild Project
« Reply #19 on: October 11, 2016, 03:50:15 PM »
I have been thinking and have mentioned it several times that depending on who is in charge at the fed level lead could be gone, just like coal. So in that regard , I propose an injection process of a metal heavy but not lead ,started in powdered form mixed with a polymer and injection molded in a simple sabot shape or other shape that would work, Here is when I yell help from BOB . I know this is not cast but polymer are self lube and form well and stay semi solid till they hit something. OK back to casting , Why wouldn't a heavy shot mix by Remington work with a little tweak. Just brain storming.

nielsenammo

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Re: Lead Free Slug - A Guild Project
« Reply #20 on: October 12, 2016, 06:14:51 AM »
I have been thinking and have mentioned it several times that depending on who is in charge at the fed level lead could be gone, just like coal. So in that regard , I propose an injection process of a metal heavy but not lead ,started in powdered form mixed with a polymer and injection molded in a simple sabot shape or other shape that would work, Here is when I yell help from BOB . I know this is not cast but polymer are self lube and form well and stay semi solid till they hit something. OK back to casting , Why wouldn't a heavy shot mix by Remington work with a little tweak. Just brain storming.

There is a powdered metal that can be done on my swage machine.  I talked to Corbin a year or two ago about it so it is not fresh in mind.  I was trying to come up with a lead free bullet back then and it seemed like an OK option to explore but the cost of material was so high.

I believe the binder he suggested to use or try was a mix based on beezwax. The binder is what was going to need experimenting with and with the cost of the material so high I just dropped it.  I am sure there are cheaper sources than Corbin to purchase these materials but even if 20% less look at how expensive it would be.

Here are a couple of links from Corbin:
http://www.corbins.com/powder.htm

look at the copper powder price:
http://www.corbins.com/prices.htm#cup
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cpt_sfc

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Re: Lead Free Slug - A Guild Project
« Reply #21 on: October 12, 2016, 04:27:23 PM »
My dad lived during the great depression and he told me that 22 long  back then , were made of swaged  metal powder, I believe he said  Iron . But if they can make soft air pellets why could they not add heavy powder and form what ever is needed. Even woodstove fuel is made locally here out of saw dust, pressure and heat to make pellets for wood stove's. Now I know that wood won't work but idea of swaging and heat with a low temp polymer binder???. I have made my own Glaser safety slugs from # 12 shot and a jacket swaged together in corbin dies. Maybe something like Winchester uses to bed there rifle recoil lug goes in hot cures hard. Who ever comes out with one that works will be in the lead. Good luck I'm just an old dummy but I'm with you.

Bob La Londe

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Re: Lead Free Slug - A Guild Project
« Reply #22 on: October 22, 2016, 12:22:45 PM »
Some research for an unrelated product idea lead me to think back to this thread.  Copper is already being used for PB bullets.  Why not for Airgun bullets.  It may or may not be suitable for pellets, but I don't see why an annealed copper with thing gas rings couldn't be used in a bullet shooters.  Tolerance might be more critical, and copper fouling might be an issue, but copper should be an option.  Maybe a production line that casts the bullets out of a suitable alloy and then passes them through an anealing oven.  Som material science research would be necessary to find the ideal copper alloy and copper treatment to get the softest copper, but its mostly paper research.  The lab metallurgy research is mostly already done. 

The other thought was with plastic coated bullets.  Some guys are already powder coating and sizing bullets for powder burners.  Why not use the powder coating (plastic) as the rifling engagement for any of a number of core materials.  The risk of course is winding up with an armor piercing airgun bullet that would then promptly be outlawed if existing laws don't already apply to use of those cores.  Tungesten core with plastic coating and gas ribs....  I bet it would sure ring a plate.  Powder coating isn't the only plastic application that could work either.  Its just something that is already being done. 

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Alan

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Re: Lead Free Slug - A Guild Project
« Reply #23 on: October 22, 2016, 02:18:13 PM »
Bob, no doubt you remember the Teflon coated bullets? I know one gunner who shot over 5,000 rounds through a custom barrel with no appreciable loss of accuracy. Only problem was, they'd go through both sides of a world's-best bullet-resistant vest, including whomever was wearing it! So in some respects, I agree with the fed issue some coatings might cause.
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Alan

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ShakySarge

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Re: Lead Free Slug - A Guild Project
« Reply #24 on: October 23, 2016, 01:01:26 PM »
LEAD FREE IS COMMIE TALK!!!![/size]

hehehe  ;) 8)

Matt
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cpt_sfc

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Re: Lead Free Slug - A Guild Project
« Reply #25 on: October 26, 2016, 12:51:08 PM »
YES and it is also HILLARY talk and all the other libs that have been hired by the stupid politicos that has been in office the past how many years , Next they won't let you have a 20 oz beer. HMMMM.I think they did that to pop/soda. You might get rid of the elected a$$ but you are stuck with all the bureaucrats they hire.!!!!!!!!!!!!

nielsenammo

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Re: Lead Free Slug - A Guild Project
« Reply #26 on: October 26, 2016, 10:35:03 PM »
I have sent slugs to Travis and I am waiting for him to get back to me about whether or not they work in the Flex .30.  It has been a challenge to find slugs that work in .300 pellet rifles.  Since this is a Guild project we are trying to use a Flex rifle for the standard.

If this slug does not work I recently got a new mold to try.  I have a couple of PMs to Travis so hopefully we will hear back soon.
  • La Verne, CA
Cast Bullets and Custom Swaged Pellets for Air Guns
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http://nielsenspecialtyammo.com
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