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#1230265 - 02/24/09 09:58 PM 22 250
jlstetler Offline
Predator Master

Registered: 01/11/09
Posts: 86
Loc: Georgia
How do you make a gun AI?

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#1230266 - 02/24/09 10:01 PM Re: 22 250 [Re: jlstetler]
gotchanow Offline
Die Hard Member II

Registered: 11/30/06
Posts: 1256
Loc: sandy, ut
just run a reamer into the chamber and you have an AI. If your gunsmith knows what hes doing he will set the barrel back 4 or 5 thousandth then recut the chamber and reheadspace the rifle with a slight crush fit to aid in fireforming the cased. Its a pretty simple process actually.

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#1230267 - 02/24/09 10:03 PM Re: 22 250 [Re: gotchanow]
jlstetler Offline
Predator Master

Registered: 01/11/09
Posts: 86
Loc: Georgia
What does it really do then is it more accuate or faster bullet speeds or what?

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#1230268 - 02/24/09 10:17 PM Re: 22 250 [Re: jlstetler]
2muchgun Offline
PM Junkie

Registered: 01/18/05
Posts: 14660
Loc: Michigun
Depending upon the cartridge, as some benefit more than others, you will gain some velocity and have to trim brass less frequently.....
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#1230269 - 02/24/09 10:18 PM Re: 22 250 [Re: 2muchgun]
2muchgun Offline
PM Junkie

Registered: 01/18/05
Posts: 14660
Loc: Michigun
22-250 Rem brass stretches more than most.......
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#1230270 - 02/24/09 10:20 PM Re: 22 250 [Re: 2muchgun]
gotchanow Offline
Die Hard Member II

Registered: 11/30/06
Posts: 1256
Loc: sandy, ut
Improved cases are straighted and the shoulder angle is increased they simply hold more powder than the parent case.

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#1230271 - 02/24/09 10:25 PM Re: 22 250 [Re: gotchanow]
IDBob Offline
Die Hard Member with a vengeance

Registered: 01/07/07
Posts: 4988
Loc: Peck Idaho
Have to say it's not as simple as just running a reamer into a chamber. Barrels are usually removed and set back a thread or two so that once the AI chamber is cut standard ammo will also chamber.
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#1230272 - 02/24/09 10:26 PM Re: 22 250 [Re: gotchanow]
jlstetler Offline
Predator Master

Registered: 01/11/09
Posts: 86
Loc: Georgia
so basically there is hardly any change from the regular 22 250 to a 22 250AI?

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#1230273 - 02/24/09 10:27 PM Re: 22 250 [Re: jlstetler]
2muchgun Offline
PM Junkie

Registered: 01/18/05
Posts: 14660
Loc: Michigun
22-250AI benefits from a decent velocity boost. You'll trim less brass......
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#1230274 - 02/24/09 10:28 PM Re: 22 250 [Re: jlstetler]
gotchanow Offline
Die Hard Member II

Registered: 11/30/06
Posts: 1256
Loc: sandy, ut
You will get more velocity since you case capactiy in increased a certain percentage you will be able to use more powder thus pushing the bullet faster. More powder equals more speed but also more throat erosion.

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#1230275 - 02/24/09 10:31 PM Re: 22 250 [Re: gotchanow]
jlstetler Offline
Predator Master

Registered: 01/11/09
Posts: 86
Loc: Georgia
ok thanks

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#1230276 - 02/25/09 12:06 AM Re: 22 250 [Re: IDBob]
gotchanow Offline
Die Hard Member II

Registered: 11/30/06
Posts: 1256
Loc: sandy, ut
Quote:

Have to say it's not as simple as just running a reamer into a chamber. Barrels are usually removed and set back a thread or two so that once the AI chamber is cut standard ammo will also chamber.




huh? The headspace is essentially the same and the 223 Improved is a larger case so the 223 rem will always chamber. The barrel should be set back but isnt absolutely necessary since the headspace is the same. Like I said the barrel should be set back for a slight crush fit. I dont think I would ever turn off two threads to recut an ackley chamber its just not necessary 4 or 5 thousands then set the headspace with a .001 crush to make sure you get a tight fit in the chamber for fireforming. Yes it is that simple.

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