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How do I corn meal 22-250 to AI

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Unread 02-18-2008, 08:25 PM
Platinum Member
Join Date: Dec 2001
Posts: 1,104
this might help
260 Ackley Case Forming
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Unread 02-27-2008, 02:46 AM
Silver Member
Join Date: Jan 2007
Location: Great Falls, MT
Posts: 205
When I had my -250 rechambered to AI the chamber was cut to crush fit standard 22-250 rounds (I think how Akley intended it). With that I just chambered a standard 22-250 round, pulled the trigger, and viola, a 22-250AI case was ejected. Got some pretty good groups from those loads too...and a coyote, and a bunch of gophers...

That's why I like the AI chambering if you want a wildcat, fireforming is easy and you can save the cream-of-wheat for breakfast, cornmeal for fish and fast powders for pistols.
Genises 27-3: Now therefore take, I pray thee, thy weapons, thy quiver and thy bow, and go out to the field, and take me some venison...
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Unread 03-02-2008, 06:55 PM
Junior Member
Join Date: Nov 2007
Posts: 14
or use hornadys hydroforming dies

I hydro form my brass, prime with spent primer, fill with water, place in press, hit with hammer 3 times, tip water out, deprime, and there you have AI formed brass, no COW no firing....
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Unread 03-03-2008, 07:14 AM
Bronze Member
Join Date: Nov 2006
Posts: 30
Where do you get the hydro forming dies? I could not find them on their web site. Can you provide a link?


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Unread 03-08-2008, 07:07 PM
Junior Member
Join Date: Nov 2007
Posts: 14
you just phone

Hornady, talk to Lonnie Hummel, if he is back from his operation.... Im sure if he isnt there somebody can hook you up..... You send in 3 fired cases and 3 unfired cases and they make it custom for you...... I have a set in .22-250AI and have a set of .338 Lapua AI coming......

I used to COW, and there is NOT A HOPE I would bother again. Hydroforming all the way........
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Unread 03-11-2008, 10:19 PM
Silver Member
Join Date: Sep 2002
Location: calgary alberta canada
Posts: 113
I have ben COW forming cases for many years with no problems.
Something I learned recently is make bloody sure your cornmeal is perfectly DRY and do not point the barrel straight down.
I was fireforming some brass in the shop and had, as near as we can tell after the fact, the cornmeal plug the bore when pointed straight down to fire the cartridge.
I now and will forever have small bits of an MRC action in my thigh
Hydoform dies are on order now, and yes I do limp slightly now.
Long Distance is BETTER than being there
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Unread 03-11-2008, 11:16 PM
Platinum Member
Join Date: Apr 2004
Location: Reno Nevada
Posts: 1,747
Mrc Action ?

What you mean the gun blew up? MRC what is that?
How does it profit a man if he gains the whole world but loses his soul?
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