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Rifles, Reloading, Optics, Equipment
Reloading
Fire forming issues
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<blockquote data-quote="nicholasjohn" data-source="post: 1769445" data-attributes="member: 109113"><p>I also gave up on the cream o' wheat method, when I couldn't get it to work in the 30-06 Ackley. For a while, I necked the cases up with an 8mm mandrel, to make the secondary shoulder for fire-forming. ( I had to do this because the chamber had been set up with excessive headspace, and factory loads didn't always fire.) Once I got through hunting season with this process, I had the problem rectified. Now I just shoot a mid-range load to fire-form, without loading the bullets into the rifling like some guys recommend. I didn't think this was necessary, since I get a squash fit with firm contact at the neck-shoulder juncture. This has worked fine for years -accuracy is very good; velocity is about what you would expect from a 308 Winchester. </p><p></p><p>If I was to do another AI chamber, I might look into the hydraulic forming method. The decision on which way to go might even come down to dollars & cents - cost of the hydraulic forming dies vs. a couple of boxes of inexpensive bullets. If that was the determining factor, cheap bullets would probably win out, especially if I was only going to need a hundred fire-formed cases. If I was going to fire-form a whole bunch of brass for a prairie dog rifle, I would definitely do it in the field - on live prairie dogs. That's "multi-tasking" at its finest.</p></blockquote><p></p>
[QUOTE="nicholasjohn, post: 1769445, member: 109113"] I also gave up on the cream o' wheat method, when I couldn't get it to work in the 30-06 Ackley. For a while, I necked the cases up with an 8mm mandrel, to make the secondary shoulder for fire-forming. ( I had to do this because the chamber had been set up with excessive headspace, and factory loads didn't always fire.) Once I got through hunting season with this process, I had the problem rectified. Now I just shoot a mid-range load to fire-form, without loading the bullets into the rifling like some guys recommend. I didn't think this was necessary, since I get a squash fit with firm contact at the neck-shoulder juncture. This has worked fine for years -accuracy is very good; velocity is about what you would expect from a 308 Winchester. If I was to do another AI chamber, I might look into the hydraulic forming method. The decision on which way to go might even come down to dollars & cents - cost of the hydraulic forming dies vs. a couple of boxes of inexpensive bullets. If that was the determining factor, cheap bullets would probably win out, especially if I was only going to need a hundred fire-formed cases. If I was going to fire-form a whole bunch of brass for a prairie dog rifle, I would definitely do it in the field - on live prairie dogs. That's "multi-tasking" at its finest. [/QUOTE]
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Fire forming issues
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