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Old 08-02-2020, 04:44 PM   #1
canny
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Default Using Ackley dies on non AI cases

Im thinking I can use a 7mm-08 AI to neck size only a 7mm-08 Rem case and then use the AI seating die to load rounds just for fireforming.

Am I correct on this thinking?


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Old 08-02-2020, 04:59 PM   #2
cattlelackranch
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Default Using Ackley dies on non AI cases

The die will more than likely form the bottom of the case to sammi specs and push the shoulder junction forward. The AI die will not touch the shoulder therefore making your case too long to chamber in your rifle. You may get away with it once but I would expect youll run into issues closing the bolt.
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Old 08-02-2020, 05:04 PM   #3
sierracharlie338
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Help me understand, you bought a 7-08AI and dies but have 7-08 brass that you are trying to load to fireform the brass?


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Old 08-02-2020, 05:12 PM   #4
canny
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Originally Posted by sierracharlie338 View Post
Help me understand, you bought a 7-08AI and dies but have 7-08 brass that you are trying to load to fireform the brass?


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Correct, but the 7-08 brass is new brass. All I need to do is size the neck and stick a bullet in it.


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Old 08-02-2020, 05:15 PM   #5
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Quote:
Originally Posted by canny View Post
Correct, but the 7-08 brass is new brass. All I need to do is size the neck and stick a bullet in it.


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Got ya. Id consider an expander mandrel and holder from 21st century or K&M so you can get a specific neck tension straight out of new brass. Then seat using your AI die.


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Old 08-02-2020, 05:17 PM   #6
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Quote:
Originally Posted by sierracharlie338 View Post
Got ya. Id consider an expander mandrel and holder from 21st century or K&M so you can get a specific neck tension straight out of new brass. Then seat using your AI die.


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But will it work the way Im thinking? Im not worried about neck tension with this part since Im just fire forming. Afterwards once I have all my brass formed then its something to consider.


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Old 08-02-2020, 05:25 PM   #7
sierracharlie338
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Originally Posted by canny View Post
But will it work the way Im thinking? Im not worried about neck tension with this part since Im just fire forming. Afterwards once I have all my brass formed then its something to consider.


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Not positive in the neck sizing honestly due to the change in shoulder angle but the seater die should have enough adjustment in it to seat the bullets without crushing the shoulder or any obscure effects.


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Old 08-02-2020, 05:35 PM   #8
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If youre just fireforming and the brass will chamber, just run the expander ball on the die through the neck to round it out (if there is one), seat a bullet and shoot it. The expander on the die should be a thou or two less than bullet diameter allowing enough neck tension to shoot unless your jamming your bullet but Id assume youre not. If no expander then well need plan b so you may have to cream of wheat them bitches

Last edited by kck; 08-02-2020 at 05:42 PM.
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Old 08-02-2020, 05:38 PM   #9
Artos
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Your AI dies if properly made should have a crush fit on the shoulder to snug the standard brass up in the chamber...run the standard brass through your AI dies as you normally would and seat the bullet out till you can see marks on the bullet just in case the crush fit isn't snug. The marks should be at least 1/2 as long as they are wide & even square is ok.

FF loads should be a moderate starter load.
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Old 08-03-2020, 09:23 PM   #10
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It works. I do the same thing forming 30-06 brass to 280AI.

I size with AI dies but then I hydro-form instead of fire forming.
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Old 08-05-2020, 07:51 AM   #11
flyinstroke
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Thats how I have done all of my 26-06 AI brass. I used the AI dies to fireform 25-06 brass. No problems so far
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