243 Ackley Improved Sizing Die

Seabeeken

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Apr 30, 2013
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Interesting. I went down and checked my reamer and dies. my chamber was cut by Hart barrels with my ptg reamer labeled 243 ackley imp. My redding dies are marked 243 win imp 40° and work perfectly. I have the bushing fl sizer and competition seater, bot marked alike. I dont have any brass on hand as it was repurposed. Ive never heard of a different version with a 40° shoulder.
 

lancetkenyon

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Jun 3, 2013
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Does both your FL sizer and your body die size the same? Or is the decapping die a neck sizes only?
Do you have an idea of what you want?
My .243 Win Imp 40° dies are a bushing neck die, body die, and comp seater.

My .260 Rem Imp 40° FL bushing die should be in this week.

Once it gets in, I will size a couple of the fired .243 AI brass to make sure everything is good. If so, I will reach out to you to sell the .243 Win Imp 40° set I have. Need and Lapua LRP .243 Win brass too? Most are fire formed to .243 AI. I have 100+. I bought 300 new Alpha .260 Rem SRP brass for my build.

To be honest, I would be reaching out to Redding if I were you, and discussing this further. I almost say they miscut your die. Especially since two of us here have the measurements you need with our .243 Win Imp 40° sets.
 

GRG

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Feb 1, 2017
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I have quite a bit of brass but you can go ahead and shoot me a price for dies and the brass separate.

Thank you
 

GRG

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Feb 1, 2017
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Well I saw a set of 243 Akley Imp FL dies on eBay, hard to find. I think I looked at them around 6am and had just been listed so grabbed them right away. Got them in yesterday so resized some brass and they are perfect. Bumping the shoulder just under .002" and reducing the shoulder diameter about .004-.005" as it should be. The weather is turning to crap but will get some ammo loaded and give it a run when I can. As I said before my other 243 Win Imp. 40° body die reduced the shoulder diameter from .260" to .250-.251". When it did that it would move the entire shoulder forward.
I'm happy now.
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20211227_183400.jpg
 

tim1457

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Jan 23, 2010
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SC
It took 13 months to get the dies but they finally got here yesterday. Accurate Arms and Ammo said according to Redding they were backlogged 2-3 months. Just got around to fireforming some brass, too much going on, but impressed so far with the rifle. 3-shot groups at 100 yards.
Timothy Sanders Sr
 

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Seabeeken

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Apr 30, 2013
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NW NC
I had similar results with mine. i used mine for Groundhogs and it loved the sierra 85 hpbt. amazing groups and terminal performance. Longest shot i could take on the property was a 400 yd head shot.
 

Ackley Man

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Mar 21, 2009
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Arizona
It took 13 months to get the dies but they finally got here yesterday. Accurate Arms and Ammo said according to Redding they were backlogged 2-3 months. Just got around to fireforming some brass, too much going on, but impressed so far with the rifle. 3-shot groups at 100 yards.
Timothy Sanders Sr
Tim,
What you may find, which is not uncommon, is that your fire forming loads will print tighter group that your standard loads with fire formed brass. It's a phenomenon that no one, to my knowledge, has been able to explain. I've broached the subject with several "Ackley" authorities and precision rifle smiths none who can provide a explination other than based on assumptions.
I'm sure your will really enjoy your AI. If you are turning necks just be cautious about the dreaded donut.
 
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