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#1462104 - 12/29/09 04:16 PM How 'bout the .270 AI?
2Rope Offline
Seasoned Member

Registered: 10/29/02
Posts: 151
Loc: NW. New Mexico
After reading the question about the .270 Wby, I was wondering if anyone had any experience with the .270 A.I.? The old .270 is pretty impressive as it is for medium sized game...
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" Trust yer neighbors, but brand yer calves! "

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#1462123 - 12/29/09 04:27 PM Re: How 'bout the .270 AI? [Re: 2Rope]
Outlawkyote Offline
Seasoned Member

Registered: 12/08/09
Posts: 361
Loc: hiding in sagebrush
The 270 bullet line up isnt that great. You might consider a 280AI for a better choice in bullets. I loved my 280AI.
If thats too big, maybe a 6.5mm 06 AI? Getting to be lots of bullet designs for it too.

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#1462201 - 12/29/09 05:37 PM Re: How 'bout the .270 AI? [Re: Outlawkyote]
JBPrecision Offline
Die Hard Member

Registered: 12/25/08
Posts: 533
Loc: Pa
.277 bullets are starting to show up, especially in the VLD line. However bullet choice is still lacking in that caliber. If you want one go for it

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#1462205 - 12/29/09 05:41 PM Re: How 'bout the .270 AI? [Re: Outlawkyote]
pcammo Offline
Die Hard Member II

Registered: 01/03/05
Posts: 1686
Loc: Helena, MT
There are plenty of bullets to choose from in .277" diameter. The .270 AI is easy to load for, and easy to shoot. In a long barrel you will gain 150fps or more. In a 22-24" barrel you will likely gain 80-120fps. We have taken many sage poodles beyond 1000 yards with 135gr. Sierra MatchKings or re-sized 150gr. 7mm Berger VLD's. I can push the 135gr Sierra to about 3425 in a 30" Kreiger. The 150gr Berger will safely fly 3275 from the same barrel.

Berger is now producing a line of .277" bullets, removing the need for expensive bullet sizing equipment. Is there a real difference between the .270 AI, 6.5-06 AI, or the .280 AI? Not really. There are plenty of good components available for all of them. All of them have similar trajectories. All of them are capable of good accuracy and precision.
John

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#1463211 - 12/30/09 11:33 AM Re: How 'bout the .270 AI? [Re: pcammo]
dogtired Online
Die Hard Member III

Registered: 01/02/06
Posts: 2075
Loc: Gunnison, CO
If you are going to improve the 270 (if possible) I would suggest the 270 Gibbs over the AI. The 270 Win has a long neck in standard form, the Gibbs shortens the neck and then blows out the shoulder. I personally think that the 270 is pretty darn good as is.

http://www.loaddata.com/members/search_detail.cfm?MetallicID=500

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#1463296 - 12/30/09 12:44 PM Re: How 'bout the .270 AI? [Re: dogtired]
2Rope Offline
Seasoned Member

Registered: 10/29/02
Posts: 151
Loc: NW. New Mexico
Thanks all! I have a pre 64 m70 Winchester in '06 that I want to make something out of. The .280 AI is still on top of the short list at this time but having shot a lot of game with a .270 I was just thinking.... I value the thoughts presented here and Thanks again!
_________________________
" Trust yer neighbors, but brand yer calves! "

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#1463319 - 12/30/09 01:10 PM Re: How 'bout the .270 AI? [Re: 2Rope]
rkite Offline
Seasoned Member

Registered: 07/02/07
Posts: 232
Loc: Arlington, Virginia
It would be nice if they made a heavier VLD bullet in .257 and .277 for custom barrels. They make heavy VLD bullets for 6mm and 6.5mm that require a 1:8 twist.
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Pre-64 Model 94 Win 30-30,
Post 64 Model 70 Featherweight 270 Win,
Remington Spartan Combo 12/.308

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#1463358 - 12/30/09 01:54 PM Re: How 'bout the .270 AI? [Re: rkite]
pcammo Offline
Die Hard Member II

Registered: 01/03/05
Posts: 1686
Loc: Helena, MT
Originally Posted By: rkite
It would be nice if they made a heavier VLD bullet in .257 and .277 for custom barrels. They make heavy VLD bullets for 6mm and 6.5mm that require a 1:8 twist.


I have often wanted the same thing. Corbin will make you a sizing die for about $600.00 that will size 7mm bullets to .277". Of course then you will also need the $2000.00 press to go with it. Then, there are only a few barrel makers that will cut a custom twist for you. The .270 barrels are almost all 1:10.
John

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