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280 or 280AI

 
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  #1  
Old 03-01-2014, 12:27 PM
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Join Date: Jun 2011
Location: Layton Utah
Posts: 197
280 or 280AI

I currently have a sweet shooting 280. I have been kicking around the idea of going to the 280AI.

Would you? Is it worth it? Im thinking I would only gain around 100fps to 150fps.

Whats your thoughts?
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  #2  
Old 03-01-2014, 01:58 PM
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Location: Great Falls, MT
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Re: 280 or 280AI

Use the custom search on the top right corner and you'll be overwhelmed on the subject matter!
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  #3  
Old 03-01-2014, 04:22 PM
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Join Date: Jul 2004
Location: Texas
Posts: 5,465
Re: 280 or 280AI

Quote:
Originally Posted by chad View Post
I currently have a sweet shooting 280. I have been kicking around the idea of going to the 280AI.

Would you? Is it worth it? Im thinking I would only gain around 100fps to 150fps.

Whats your thoughts?

The main advantage to the 280 AI is brass life. The AI version will get you another 100 to 150 yards
of hunting with the same bullet.

Where it makes the biggest difference is if you want to shoot the heavy bullets. It can also compete with the 7 mm Rem Mag.

Both the 280 and the 280 AI are fine cartridges so the choice is yours.

J E CUSTOM
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  #4  
Old 03-01-2014, 05:21 PM
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Join Date: Jul 2007
Location: Billings, Mt
Posts: 782
Re: 280 or 280AI

Not knowing what the twist is in your current barrel and your evaluation that it shoots well, I would leave it alone and shoot the heck out of it till the barrel is gone. Then is the time to evaluate if going to the AI is worth switching to.

It never pays to mess with something that is working better than average - been there, done that.
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  #5  
Old 03-01-2014, 06:45 PM
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Join Date: Dec 2011
Location: Michigan
Posts: 1,084
Re: 280 or 280AI

I have a 280AI and I really like it. I would do another in a second.

I agree with JE, if you are shooting the heavies I think there is value in the AI. The extra capacity helps as I think the 280 is marginal for velocity at 168gr plus bullet weights. Based on my experience, loading to the same relative levels of "hotness", I don't believe the AI competes with the 7Mag. YMMV

All of that being said, if I was set up with dies, loads, drops, etc for the 280, and it was doing everything I needed it to, I wouldn't go AI. If your current 280 is not doing everything you want it to, you may want to research if going AI really will get you there. You may find that to get a major/meaningful change in performance you would be better served going to a bigger 7.

FEENIX is absolutely right that there are reams of data on this subject, and it is worth researching to see what you find. My personal experience (just mine) is that all other things being the same, an extra 150fps from an AI vs a standard 280 is not even close to reality. Remember, I am an AI owner, and a very pleased one at that - I don't think you will be bummed with one, just make sure your expectations are in line before you make the change.

Good luck

Brandon
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  #6  
Old 03-01-2014, 07:31 PM
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Join Date: Dec 2012
Posts: 137
Re: 280 or 280AI

I have a 280 AI and am very impressed with it. Oh, and for what its worth, 150 fps MORE with a 168 gr bullet is a huge difference, esp at longer ranges. Its worth the upgrade. My 280 AI pushes a 168 gr LRAB at 2950 and shoots quarter inch groups at 100 yards. The perfect mountain rifle caliber IMHO.
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  #7  
Old 03-01-2014, 08:16 PM
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Join Date: Dec 2011
Location: Michigan
Posts: 1,084
Re: 280 or 280AI

Quote:
Originally Posted by BCMAG2 View Post
I have a 280 AI and am very impressed with it. Oh, and for what its worth, 150 fps MORE with a 168 gr bullet is a huge difference, esp at longer ranges. Its worth the upgrade. My 280 AI pushes a 168 gr LRAB at 2950 and shoots quarter inch groups at 100 yards. The perfect mountain rifle caliber IMHO.
I don't disagree that 150fps makes a difference. I am stating that in my experience, I cannot achieve 150fps more with an AI relative to a standard 280 (assuming barrel length, relative heat of load, etc is the same). I am not a ballistician, that is just my experience. The extra 2.7 grains H2O capacity relating to 150fps more, IMO, is a difficult sell. I'm certainly willing to hear the experience of others.

In a quick look up,

280 = 62.9 grains H2O
280 AI = 65.6 grains H2O
7Mag = 75.0 grains H2O

Brandon
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