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.280 AI controversy explained ...

Buttermilk said:
I have shot Nosler 280AI brass in a chamber that was the "traditional" Ackley chamber with zero issues.

I also fireformed R-P 280 Rem brass in this chamber with zero issues.


Regards,
Rog
Click to expand...

As have I in 4 different chambers. Measured far to many cases now and after many firings they are no longer than newnosler280ai brass. And if my chamber is somehow .014 short as in saami why do all standard 280rem brass and ammo chamber just fine with no feel that a .014 crush would create ? I guess that's why we are having this discussion. A simple nogo gauge check will hopfully explain a lot more if they ever arrive way down here :D
 
Once again. In the interest of safety I am going to brake my silence and throw one more thing out that should put this to bed.

After talking to the reamer manufactures. To get a good, clear answer to this rodeo. I have narrowed it down to one simple thing.

"THERE ARE TWO DIFFERENT GO GAGES FOR THE TWO DIFFERENT TYPES OF BRASS/chambers".

IF YOU INTEND TO USE THE NOSLER AMMO/BRASS IN YOUR 280 AI you must/should use the matching
head space gage for that chamber.

IF YOU INTEND TO FIRE FORM THE 280 rem brass in your chamber you need to use the 280 rem go gage with .004 crush.

There is .014 to .019 difference in the chambers and factory ammo.

Simply put, There is a difference in the brass/chambers or they would not require two different go gages. To use the wrong gage or brass, ammo would/could be dangerous.

In my opinion If you are mixing brass and have gotten away with it, you have been lucky.

Armed with this information, Everyone is own there own.

J E CUSTOM
 
yawn said:
I'm definatly on this "noproblems " list but I find far to much conflicting information so Im still sitting on the fence as to the actual debate.
Click to expand...

2 1/2 on the "no problems" side

J E Custom said:
Once again. In the interest of safety I am going to brake my silence and throw one more thing out that should put this to bed.

After talking to the reamer manufactures. To get a good, clear answer to this rodeo. I have narrowed it down to one simple thing.

"THERE ARE TWO DIFFERENT GO GAGES FOR THE TWO DIFFERENT TYPES OF BRASS/chambers".

IF YOU INTEND TO USE THE NOSLER AMMO/BRASS IN YOUR 280 AI you must/should use the matching
head space gage for that chamber.

IF YOU INTEND TO FIRE FORM THE 280 rem brass in your chamber you need to use the 280 rem go gage with .004 crush.

There is .014 to .019 difference in the chambers and factory ammo.

Simply put, There is a difference in the brass/chambers or they would not require two different go gages. To use the wrong gage or brass, ammo would/could be dangerous.

In my opinion If you are mixing brass and have gotten away with it, you have been lucky.

Armed with this information, Everyone is own there own.

J E CUSTOM
Click to expand...

4 on the "problems" side

:D
 
J E Custom said:
Once again. In the interest of safety I am going to brake my silence and throw one more thing out that should put this to bed.

After talking to the reamer manufactures. To get a good, clear answer to this rodeo. I have narrowed it down to one simple thing.

"THERE ARE TWO DIFFERENT GO GAGES FOR THE TWO DIFFERENT TYPES OF BRASS/chambers".

IF YOU INTEND TO USE THE NOSLER AMMO/BRASS IN YOUR 280 AI you must/should use the matching
head space gage for that chamber.

IF YOU INTEND TO FIRE FORM THE 280 rem brass in your chamber you need to use the 280 rem go gage with .004 crush.

There is .014 to .019 difference in the chambers and factory ammo.

Simply put, There is a difference in the brass/chambers or they would not require two different go gages. To use the wrong gage or brass, ammo would/could be dangerous.

In my opinion If you are mixing brass and have gotten away with it, you have been lucky.

Armed with this information, Everyone is own there own.

J E CUSTOM
Click to expand...
Jerry thanks for putting in some time here but its really just more of the same. Yes there are two sets of gauges , shown here in the only attempt to prove or disprove the difference that Iv been able to find.
https://gunsmithtalk.wordpress.com/2012/07/17/280-ackley-improved-emperical-headspace-test/
So have they made a mistake?If so how have they got it wrong?
Everything else on both sides is just anecdotal to date.

But assuming there is a difference then using the old chamber will carry possible case head separation risks etc if using nosler 280ai brasss/ammo but if using the supposed shorter saami chamber then any brass or ammo should be a good fit ( nosler) or slightly to long for the chamber (all standard 280rem )so the only issue would be that the bolt may not close?If I understand this corectly using the shorter saami should carry no risk as if the bolt will close on the new brass then it should be held snugly by the shorter chamber and give no case stretch?
None of which should be a substitute for good fireforming practive of course.
 
woods said:
2 1/2 on the "no problems" side



4 on the "problems" side

:D
Click to expand...
no Im a full vote for "no problems because I simply dont have any after many years and 1500 odd rounds. Actually it could be 3 from me given the others Iv dealt with and it would be 4 but I'm not sure what reamer Kimber claim to use in their 280ai.
I just don't have a firm opinion on the difference yet.But Im still digging :D
 
yawn said:
no Im a full vote for "no problems because I simply dont have any after many years and 1500 odd rounds. Actually it could be 3 from me given the others Iv dealt with and it would be 4 but I'm not sure what reamer Kimber claim to use in their 280ai.
I just don't have a firm opinion on the difference yet.But Im still digging :D
Click to expand...

 
Last edited by a moderator:
The very first video shows that there are two head space gauges, but when the originator of the video used both gauges, reamed and set two chambers, one with each gauge he could then swap gauges and have the same head space.

Bottom line if you stick a loaded round in your chamber it would not hurt to check the head space before pulling the trigger, AI, factory or Wildcat. I take a head space gauge with me to buy a factory rifle and it's served me well, some of the factory rifle are head spaced horribly!!!!
 
14 pages of debates about a subject that isn't debatable. This is real simple. All you have to do is look at the reamer specs. Are they different or are they the same. That's one of the good things about numbers.
 
Edd said:
14 pages of debates about a subject that isn't debatable. This is real simple. All you have to do is look at the reamer specs. Are they different or are they the same. That's one of the good things about numbers.
Click to expand...

Thanks Edd.

I like one liners.

J E CUSTOM
 
woods said:
Here's a one-liner, if there are 2 different go gauges, then how can they have the same headspace?
Click to expand...
Because one go-gauge is 0.014" longer so they both zero-out in their own respective chambers... That's how you can have 2 different go-gauges.

Here's a mind-blower...There's 2 different reamers, die sets, and you're not gonna believe this.....Even 2 different No-Go Gauges, too!

:D
 
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