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Rifles, Bullets, Barrels & Ballistics Applied Ballistics

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AI?

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  #1  
Unread 02-08-2012, 07:58 PM
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Join Date: Feb 2012
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AI?

what exactly does this change in a given caliber?
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  •   #2  
    Unread 02-08-2012, 08:06 PM
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    Re: AI?

    Quote:
    Originally Posted by the11car View Post
    what exactly does this change in a given caliber?
    The best of my understanding is the shoulder angle of the case!
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      #3  
    Unread 02-08-2012, 08:11 PM
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    Re: AI?

    Fireforming a case to an Ackley Improved reduces the body taper of the case and blows the shoulder out to a 40-degree angle. There is an increase in powder capacity of from both and the total increase depends on the cartridge.
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      #4  
    Unread 02-08-2012, 09:46 PM
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    Re: AI?

    Left fire formed 220 swift AI
    Right standard swift case.
    Attached Thumbnails - Click to View Larger
    AI?-220-ackley-40o-degree.jpg  
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      #5  
    Unread 02-08-2012, 09:54 PM
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    Re: AI?

    Quote:
    Originally Posted by the11car View Post
    what exactly does this change in a given caliber?
    AI cases are damn sexy.

    Most are based on factory calibers that would allow you to also shoot off-the-shelf ammo in a pinch.

    Jon
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      #6  
    Unread 02-08-2012, 10:41 PM
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    Re: AI?

    so a barrel has to be re chambered? looking at some ballistic charts i've seen it makes alot of difference... thanks for any info
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      #7  
    Unread 02-08-2012, 10:46 PM
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    Re: AI?

    I've thrown this photo up before on other posts, but it applies to this thread as there are 3 AI Cartridges in this photo. Left to right and for refrence, cartridges are : 7mm STW, .30-06 ACKLEY iMPROVED, 6.5-06 Ackley Improved, .243 Ackley Improved, and the .243 Winchester.

    AI?-dans-guns-ii-009.jpg

    Hope this helps,

    Dan
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