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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257 FERGUSON Hot Tamale
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<blockquote data-quote="Fiftydriver" data-source="post: 35777" data-attributes="member: 10"><p>Speed Demon,</p><p></p><p>Forming cases is pretty easy the way I do it. What I do for my customer is have them buy a Redding Competition Bushing neck sizing die in 25-06.</p><p></p><p>I then use teh same reamer to basically rechamber the sliding sleeve in the die and chamber it to the correct depth to allow a 7mm STW case to fit in it.</p><p></p><p>Then all you have to do is buy the different size bushings and take a couple steps and neck the brass down with the one die by changins to smaller and smaller bushings until you are at the correct diameter.</p><p></p><p>I designed my reamer so that you do not have to turn your case necks if you do not wish to. The neck of the reamer is 0.00175" over the diameter of a loaded 257 STW round using Win 7mm STW cases. This is a very quality fit. One should varify the thickness of your necks before shooting but on average, the Win brass is fine.</p><p></p><p>YOu can still take a light 0.0005" pass on your necks if you want to true things up perfectly and you will still have a good snug neck.</p><p></p><p>This reamer is not designed as a BR chamber, more as a BR/Hunting hybrid chamber to ge tthe most accurately safely from these high intensity rounds.</p><p></p><p>In my opinion, the 85 gr pill is a poor choice for this round you will not get an efficent powder burn unless you go to a much faster powder and then you will get a low load density situation which can cause a variaty of problems.</p><p></p><p>The 100 gr is as light as I recommend.</p><p></p><p>THe 115 gr pills should easily get 3800 fps in the 30" Lilja 3 groove barrel. I do not know if I will drive them that hard but they should easily be able to do it.</p><p></p><p>Richard Graves of Wildcat bullets in Alberta Canada is sending me some bonded core flat base 130 gr hunting bullets to try in the STW. I suspect I will be able to puch then to near 3600 fps.</p><p></p><p>He is also sending me some prototype 140 gr Rebated boattails to test. Thats right a 140 gr bullet with a B.C. higher then a VLD design.</p><p></p><p>I will be looking to get 3400 fps with these in the STW.</p><p></p><p>THe 257 STW will get more velocity with the heavier bullets. The heavy bullets just help the very slow burning powders burn more efficently adn thus produce better velocities.</p><p></p><p>The 115 gr class bullets and heavier are far better choices for the 257 STW on deer size game but velocity sells, sometimes at the expense of on game performance.</p><p></p><p>Good Shooting!!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 35777, member: 10"] Speed Demon, Forming cases is pretty easy the way I do it. What I do for my customer is have them buy a Redding Competition Bushing neck sizing die in 25-06. I then use teh same reamer to basically rechamber the sliding sleeve in the die and chamber it to the correct depth to allow a 7mm STW case to fit in it. Then all you have to do is buy the different size bushings and take a couple steps and neck the brass down with the one die by changins to smaller and smaller bushings until you are at the correct diameter. I designed my reamer so that you do not have to turn your case necks if you do not wish to. The neck of the reamer is 0.00175" over the diameter of a loaded 257 STW round using Win 7mm STW cases. This is a very quality fit. One should varify the thickness of your necks before shooting but on average, the Win brass is fine. YOu can still take a light 0.0005" pass on your necks if you want to true things up perfectly and you will still have a good snug neck. This reamer is not designed as a BR chamber, more as a BR/Hunting hybrid chamber to ge tthe most accurately safely from these high intensity rounds. In my opinion, the 85 gr pill is a poor choice for this round you will not get an efficent powder burn unless you go to a much faster powder and then you will get a low load density situation which can cause a variaty of problems. The 100 gr is as light as I recommend. THe 115 gr pills should easily get 3800 fps in the 30" Lilja 3 groove barrel. I do not know if I will drive them that hard but they should easily be able to do it. Richard Graves of Wildcat bullets in Alberta Canada is sending me some bonded core flat base 130 gr hunting bullets to try in the STW. I suspect I will be able to puch then to near 3600 fps. He is also sending me some prototype 140 gr Rebated boattails to test. Thats right a 140 gr bullet with a B.C. higher then a VLD design. I will be looking to get 3400 fps with these in the STW. THe 257 STW will get more velocity with the heavier bullets. The heavy bullets just help the very slow burning powders burn more efficently adn thus produce better velocities. The 115 gr class bullets and heavier are far better choices for the 257 STW on deer size game but velocity sells, sometimes at the expense of on game performance. Good Shooting!!! Kirby Allen(50) [/QUOTE]
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.257 FERGUSON Hot Tamale
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