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Rifles, Reloading, Optics, Equipment
Reloading
Fire forming 30/06AI question
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<blockquote data-quote="MNbogboy" data-source="post: 941728" data-attributes="member: 18849"><p>You mentioned that your headspace was off but did you say whether it was tight or loose?....Some if not all the true AI cases were designed by Ackley to shoulder hard to attenuate good concentricity before fire forming (approx .004 shorter than the parent case)....Hopefully that is the case with your 30-06 AI chamber...</p><p></p><p>If the AI headspace allows a "snug" fit with the "Walmart" rounds then I believe you might be well ahead if you use those for fire forming...</p><p></p><p>Nobody can tell us if the "Walmart" Winchester brass is the same as if you bought Winchester reloading brass but with todays prices and availability of components your idea makes good sense...If you price in some fire forming bullets along with the powder and primers the Walmart solution may prove to be economically sound....Also a plus that it might show you that factory stuff may work in a pinch.....</p><p></p><p>If your headspace turns out to be long then you can do as Mudrunner2005 says and seat your bullets out to the lands to maintain the initial concentricity and use a lighter load as he says...Other ways are to expand the neck a little larger than your chamber neck and then only partially necking down the neck...In essence providing a false shoulder for the case to center on....</p><p></p><p>I just went through the same thing with a .257 Roberts AI that I chambered this winter but I couldn't find either loaded ammunition or brass so I ended up buying "high buck" Nosler 7x57 brass and making my own....The Nosler brass turned out to be too soft for my liking and loses primer pockets prematurely....My only alternative was to form the brass from 25-06 and 30-06 cases (Rem)..These are turning out to be much longer lasting than the new Nosler stuff.....And to top it off the Rem 30-06 stuff was "Walmart" stuff once fired by a friend, then formed by me for 25-06 and then about ten fired in one of my three 25-06s, now it has been through a couple of more dies and fired at least 6 times through the Bob AI with only losing a couple of pieces out of 30 or so due to split necks....An advantage for me forming from longer cases is that I can keep the necks long enough from day one....Fire forming from actual Roberts cases or 7x57 necked down cases will leave the necks a little short...In your case I suspect the 30-06 AI necks will end up short at least for a few firings.....</p><p></p><p>Now on to my next project (6.5 - .257 Bob AI)...</p><p></p><p>Good Luck,</p><p>Randy</p></blockquote><p></p>
[QUOTE="MNbogboy, post: 941728, member: 18849"] You mentioned that your headspace was off but did you say whether it was tight or loose?....Some if not all the true AI cases were designed by Ackley to shoulder hard to attenuate good concentricity before fire forming (approx .004 shorter than the parent case)....Hopefully that is the case with your 30-06 AI chamber... If the AI headspace allows a "snug" fit with the "Walmart" rounds then I believe you might be well ahead if you use those for fire forming... Nobody can tell us if the "Walmart" Winchester brass is the same as if you bought Winchester reloading brass but with todays prices and availability of components your idea makes good sense...If you price in some fire forming bullets along with the powder and primers the Walmart solution may prove to be economically sound....Also a plus that it might show you that factory stuff may work in a pinch..... If your headspace turns out to be long then you can do as Mudrunner2005 says and seat your bullets out to the lands to maintain the initial concentricity and use a lighter load as he says...Other ways are to expand the neck a little larger than your chamber neck and then only partially necking down the neck...In essence providing a false shoulder for the case to center on.... I just went through the same thing with a .257 Roberts AI that I chambered this winter but I couldn't find either loaded ammunition or brass so I ended up buying "high buck" Nosler 7x57 brass and making my own....The Nosler brass turned out to be too soft for my liking and loses primer pockets prematurely....My only alternative was to form the brass from 25-06 and 30-06 cases (Rem)..These are turning out to be much longer lasting than the new Nosler stuff.....And to top it off the Rem 30-06 stuff was "Walmart" stuff once fired by a friend, then formed by me for 25-06 and then about ten fired in one of my three 25-06s, now it has been through a couple of more dies and fired at least 6 times through the Bob AI with only losing a couple of pieces out of 30 or so due to split necks....An advantage for me forming from longer cases is that I can keep the necks long enough from day one....Fire forming from actual Roberts cases or 7x57 necked down cases will leave the necks a little short...In your case I suspect the 30-06 AI necks will end up short at least for a few firings..... Now on to my next project (6.5 - .257 Bob AI)... Good Luck, Randy [/QUOTE]
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