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500 Jeffery based wildcats

 
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  #8  
Old 02-12-2013, 05:09 AM
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Location: Alaska
Posts: 430
Re: 500 Jeffery based wildcats

Quote:
Originally Posted by Varminator 911 View Post
Some question a Lapua on a 700 action. This is fatter yet. Is that enough steel?
Enough steel where ? don't know what you mean ! give me a valid question so I can answer it !

many 338 Lapuas have been built on the Rem700 actions and including 7.82 Warbirds, both operate at higher pressures than the 500 Jeffery

Rem 700's can be easily made to run the parent 500 Jeffery cartridge, don't see why necking it down to 375 cal. would make a difference !


...
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500 Jeffery based wildcats-500-jeffery.jpg  
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How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
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"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
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  #9  
Old 02-12-2013, 05:57 AM
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Re: 500 Jeffery based wildcats

I necked down the 500 Jeffery case to get an idea on what it would look like, the neck will be longer of course, I left it short so I can measure the chamber first to make an adjustment to fireform with proper headspace..... the shoulder will also be fire formed up to 35 degrees...

necking down wasn't as difficult as it would appear to be, I had most of the necessary dies to gradually reduce the diameter of the neck, after determining the proper diameter I bought a couple more die sets to get the proper squeeze....
I just used the bottom portion of standard caliber dies with the appropriate diameters to reduce the neck with zero case losses.... (lotsa Imperial wax)


500 Jeffery .532" neck OD

500 S&W .530"
300 Win Mag .513"
6.5x284 .500"
6.5x55 Swede .480"
454 Casull .477"
30-06 Springfield .470"
44 Magnum .457"
220 Swift .445"
6.5 Grendel .437"
40 S&W .424"
30-30 Win .419"
25-35 Win .416"
5.45x39 .394" final die used and 330 gr. Cutting Edge bullet seated with good tension

I realize that is a lot of steps and a lot of dies.. but it worked and I gradually reduced the huge neck opening down to accept a .375" bullet with no problems, I have a batch of brass ready to fire form and did not need to purchase expensive case forming dies ( $500 and 6 month wait was the quote )

Now I have $500 saved to build a real set of dies from my fired cases !!!

Next I will work on continuing to reduce the neck to accept a .338 cal bullet...

additional dies required

9mm Luger .391"
9x18 Makarov .384"
357 Magnum .379"
30 Carbine .354" ready to seat 338" bullet

gotta get me the 30 Carbine and 9x18 Mak dies and ready to go !


......
Attached Thumbnails - Click to View Larger
500 Jeffery based wildcats-375-mjolnir.jpg   500 Jeffery based wildcats-375-mjolnir-378-wby-9.53-saturn-375-rum-375-wby-375-h-h.jpg  

__________________
How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
WIKIPEDIA


"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
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  #10  
Old 02-13-2013, 03:05 AM
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Join Date: Jan 2009
Location: Ketchikan,AK
Posts: 51
Re: 500 Jeffery based wildcats

I am always amazed when guys are excited to shoot cartridges of this magnitude. The muzzle breaks used must be quite effective??? I own break less 8MM Mag and 340 WBY and consider those quite substantial as far as recoil is concerned. Holy crow! Good luck with this. I was hoping to see more happen with the 6.5 Prometheus as well.


Tim J
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  #11  
Old 02-13-2013, 09:13 AM
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Join Date: Oct 2008
Location: Alabama
Posts: 5,548
Re: 500 Jeffery based wildcats

Swamplord.....What program are you using to design those cartridges? I have been looking for a cartridge building program that actuall works (RCBS Load v3 doesn't work unless you're a computer nerd).

Anyone know of a program where you can design a cartridge, simply by inputting different dimensions and it automatically changes its look, as you inpt different data?

I have a cartridge design in my head, but have no way to design it other than drawing it by hand, which is difficult. I'd rather have a 3D model on a computer with all technical data.
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"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger

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Quote:
Originally Posted by WildRose View Post
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  #12  
Old 02-13-2013, 09:29 AM
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Join Date: May 2004
Location: Alaska
Posts: 430
Re: 500 Jeffery based wildcats

The 6.5 Prometheus project is alive and well, have the rifle completed, waiting for Neil Jones to finish up my dies and will start load development when dies arrive, have a fluted 8.5 twist BRUX barrel to burn up with load developement and fireforming brass and to see how long the tube will last, then will throw an 8 twist Bartlein bbl on. I'm hoping throat life will be a bit better with the long neck and 35 degree shoulder, we shall see.....


...............
Attached Thumbnails - Click to View Larger
500 Jeffery based wildcats-6.5-prometheus-bringer-fire.jpg   500 Jeffery based wildcats-whiskey-.jpg  

500 Jeffery based wildcats-whiskey-b.jpg  
__________________
How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
WIKIPEDIA


"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
Reply With Quote
  #13  
Old 02-13-2013, 09:39 AM
Silver Member
 
Join Date: May 2004
Location: Alaska
Posts: 430
Re: 500 Jeffery based wildcats

Quote:
Originally Posted by MudRunner2005 View Post
Swamplord.....What program are you using to design those cartridges? I have been looking for a cartridge building program that actuall works (RCBS Load v3 doesn't work unless you're a computer nerd).

Anyone know of a program where you can design a cartridge, simply by inputting different dimensions and it automatically changes its look, as you inpt different data?

I have a cartridge design in my head, but have no way to design it other than drawing it by hand, which is difficult. I'd rather have a 3D model on a computer with all technical data.
I use Quick Design, I just pull up the parent case I am working with then tweak it with the dimensions I have in mind. It does exactly what you describe and works with Quickload its sister program..

If you want, pm me to get my email so you can send me your info and I can draw up your cartridge and compute all data as case water capacity and shoulder angle...etc..
__________________
How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
WIKIPEDIA


"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
Reply With Quote
  #14  
Old 02-13-2013, 10:13 AM
Silver Member
 
Join Date: May 2004
Location: Alaska
Posts: 430
Re: 500 Jeffery based wildcats

I have successfully completed necking down the 500 Jeffery case down to .338"

using all the steps as for the 375 then continuing with the next steps

9mm Luger .391"
(did not have 9x18 Makarov dies at .384")
357 Magnum .379"

the final die body used was the 357 Magnum and did not need to use the 30 Carbine die,
338 cal bullet seated with good tension for fireforming

Once the first case was successfully completed I came up with a name for my new wildcat...

"338 WOLVERINE" (The Alaskan Beast)

in the pic below the case is almost ready for fire forming, neck left short intentionally until I have a chamber to measure then the neck will be lengthened and shoulder fireformed up to 35 degrees...



.....
Attached Thumbnails - Click to View Larger
500 Jeffery based wildcats-338-wolverine-338-378-wby-8.59-titan-338-edge-338-laua-338-norma-340-wby-338-winmag.jpg   500 Jeffery based wildcats-375-mjolnir-338-wolverine.jpg  

__________________
How is it y'all still don't know the difference between CALIBER and CARTRIDGE ??

"In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires."
WIKIPEDIA


"Fear of weapons is a sign of retarded sexual and emotional maturity"
Sigmund Freud
Reply With Quote
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