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As you can see I'm pushing these 162's and 168's to the velocities some are getting from their 140's and 150's.

I do love long barrels.


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I looked up my RL22 load.

60gr RL22
168 Berger HVLD
Nosler brass
WLR

The 64gr Magpro load also works well with the Berger but the pressure is up near 64K.

I don't have any problem running cartridges to their SAAMI limit but many prefer more sedate pressures.


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This is the argument folks make for the 7RM.

You can get the same velocities as a hot loaded 280AI but at more sedate pressure (~60K)

I prefer the 280AI to the 7RM.


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From my digging on the 280ai....sane velocities/pressure are the following max limits :

140's.......3200
150's.......3100
160's.......3000


Those are my goals with my 280ai.

It should keep me in the 63k range max.

Tony

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Haven't tried any bullet under 162gr in mine but your quidelines seem good.

I get a bit more velocity due to the 26" barrel and the fact that I'm comfortable pushing up to near 65K.

Even though I'm a full grain under the max MagPro load, and I'm getting no pressure signs I'll likely call this max.

I may try 65gr to see if I run into pressure. If I don't I'm going to shoot for 3100 with the 162 Amax just to see if I can get there. I'll likely dial my hunting loads down to the 64gr level at 3050.

Anyone get into the 3100's with a 160 in the 280AI?


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Originally Posted by BobinNH
Doug seems like 3040-3050 with a 150 is "normal"velocity for the 280AI(?)....I noticed that's where John Sundra ended up with his JRS cartridge,which is pretty much the same thing.


Morning Bob!

I put together a few of the 62.0 load last night with varying COAL, which averaged 3060 fps with that in mind.

Unfortunately the weather isn't cooperating this morning..

Shouldn't be stressing anything at that velocity, and if I want more I'll reach for the 7 Rem Mag or the 7mm Dakota... grin



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The favourite load in my one 280AI was the 150TSX at 3050 fps, with around 62.5 grains H4831 Extreme (slow lot). It had a 9 twist 24" barrel.

Other loads were the 140 at 3160 with the same powder, and the 120 at about 3375 with H4350.

With the 140s I got 3200 fps with RL22, but 4831 was more accurate.

Same with 7828 and the 150s, more velocity but the 4831 loads were so accurate I stayed there.


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Put 56 rounds of 280 Rem through my brand new AI today. Even in high winds and drifting snow I got a few 1" groups.

Quite happy with the caliber in the Montana.

Finally found the secret to my Montana in 30-06. It likes the bullets deeply seated.

Good day for the Ls.


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Even though I have an 84L Montana in 30-06, I am thinking the 280AI may be a must-have chambering.

As close as the 280AI treads on the heels of the 7WSM, and with the 84L Montana 1/2 pound lighter than the 7SM 8400 Montana to-boot, the 280AI in an 84L just has so much going for it.

With the 30-06 and the 280AI being so close in performance, it doesn't make much sense for me to get one.

But I think I need one anyway.

_


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It's funny, until the MT appeared I couldn't find the love for the 280 Ai... however in that package it makes an inordinate amount of sense.

Sort of... laugh


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Buy one wink .

You'll trick it out exactly the way I would......then go back to your .270. Just give me a heads up before you list it in case I'm working.

George


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I find love for the 280Arkey just looking at those shoulders!

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Originally Posted by NH K9
Buy one wink .

You'll trick it out exactly the way I would......then go back to your .270. Just give me a heads up before you list it in case I'm working.

George


Ha!

Not gonna buy one, that I do know.

Just encouraging Whelenaway grin


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Quote
It's funny, until the MT appeared I couldn't find the love for the 280 Ai... however in that package it makes an inordinate amount of sense.

Sort of... grin


I agree. Since the Nosler Rifles never gained any real traction, and there was no other off-the-shelf platform, it was not making any headway.

In my mind, the Nosler rifles are very good products, but just priced too high. A semi-custom rifle with a Vanguard action is a tough-sell in that price range.

And yes, it makes sense . . . sort-of grin

It won't do anything the 270 or 30-06 won't do, but the differences between all of these chamberings is so small, you have to look at very small incremental changes and hope to find something that rings your bell.

_


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Ha!

Not gonna buy one, that I do know.

Just encouraging Whelenaway grin



It's working grin

And if I'd seen your 257 in time, that one would be on it's way here too. grin

Maybe you could use an 84L Montana in 30-06 ? grin

_


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[quote=Brad]It's funny, until the MT appeared I couldn't find the love for the 280 Ai... however in that package it makes an inordinate amount of sense.

Sort of... laugh [/quote
Brad,
It doesn"t have to be a MT.... it could be a Sako........ 7 shots .280AI,
YMMV,
BD

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Nice rifle, and nice shooting BD grin


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Originally Posted by WhelenAway
Even though I have an 84L Montana in 30-06, I am thinking the 280AI may be a must-have chambering.

As close as the 280AI treads on the heels of the 7WSM, and with the 84L Montana 1/2 pound lighter than the 7SM 8400 Montana to-boot, the 280AI in an 84L just has so much going for it.

With the 30-06 and the 280AI being so close in performance, it doesn't make much sense for me to get one.

But I think I need one anyway.

_


The thing about the .280AI is that it's not really a Magnum! As you point out its close however sometimes a magnum will not reach far enough at least in theory.

Since I have a 7mm WSM that weighs less than a M70 Featherweight I have no want for a 280AI today. At least the way I use 'magnums'.

To each his own.

On the other hand if this were a 280AI I might take it. wink
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Originally Posted by Savage_99

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10k words..

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All guns should be locked up when not in use!
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