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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
500 Jeffery based wildcats
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<blockquote data-quote="Swamplord" data-source="post: 762787" data-attributes="member: 2460"><p>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...</p><p></p><p>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....</p><p>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)</p><p></p><p></p><p>500 Jeffery .532" neck OD</p><p></p><p>500 S&W .530"</p><p>300 Win Mag .513"</p><p>6.5x284 .500"</p><p>6.5x55 Swede .480"</p><p>454 Casull .477"</p><p>30-06 Springfield .470"</p><p>44 Magnum .457"</p><p>220 Swift .445"</p><p>6.5 Grendel .437"</p><p>40 S&W .424"</p><p>30-30 Win .419"</p><p>25-35 Win .416"</p><p>5.45x39 .394" final die used and 330 gr. Cutting Edge bullet seated with good tension</p><p></p><p>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 )</p><p></p><p>Now I have $500 saved to build a real set of dies from my fired cases !!!</p><p></p><p>Next I will work on continuing to reduce the neck to accept a .338 cal bullet...</p><p></p><p>additional dies required</p><p></p><p>9mm Luger .391"</p><p>9x18 Makarov .384"</p><p>357 Magnum .379"</p><p>30 Carbine .354" ready to seat 338" bullet</p><p></p><p>gotta get me the 30 Carbine and 9x18 Mak dies and ready to go !</p><p></p><p></p><p>......</p></blockquote><p></p>
[QUOTE="Swamplord, post: 762787, member: 2460"] 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 ! ...... [/QUOTE]
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500 Jeffery based wildcats
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