Home Forums Reloading Big Game Rifles 280 Ackley vs 7 Rem Mag

I purchased my first 7mm Mag in the early 70's and have used this cal off and on since then and have had one in the safe for the last 30 plus years but when i go hunting it is my 280 Ack or 270 Win i picked up. I believe the 7 mm Mag is a good cal and it gives the man who is hunting with one the illusion he is hunting with one of the mighty Magnums, when in all reality he is hunting with a 30-06 clone because the ballistic are almost equal when you compare bullet weight and vel. If you like the 7mm Mag then by all means use it. Myself give me the 280 Ack or 270 Win . My next 7mm will be 7x57 if i decide to build another. By the way i rebarreled my 7mm Mag to 25 STW.

Kimber New Products

Did not realize it--picked it up off another thread--good for the 280 AI

My 30-06 will do right at 3000fps w/ 150's

My 7RM will push 140's to 3325fps easy

Doesn't seem quite the same to me.....but maybe I'm just ignorant.

Brett

BTW same 7mag will push 154IB's to 3230fps via R25

Use the same barrel length with the 06 and 7 Mag and the difference isn't worth arguing over.

That's not what I've found...but I guess results will vary


Brett

From the standpoint of effect on game,the two are similar,which makes sense because they are comparable cartridges.

But the 7 mag is faster than the 30/06,and shoots flatter; it was designed to be,and always will be,because it holds more powder.The 280 AI is the one that I never "got",or understood...still don't.

That is because you are a 270 slut. You might as well admit it.

The market is closed today, so here is a perspective...

The 280AI is to us uh..."seasoned" 7mm sluts what the 280 could have been if it had been loaded to the gills right from the get-go just like the 270 was.

I think the best thing "they" could do is let the 280 die a well-deserved death and factory chamber the AI in its place as the standard non-magnum 7mm.

God bless Kimber. God bless Nosler.

It would save us from being subjected to reading that same Remington 740 Auto story in every 280 article forevermore as well. If you want a kinder gentler 7mm you have the 7-08 which already pushes some of the 280 factory round speeds I have chronographed. Sad.

If there is such a thing as a sweet spot, there it is in the 7mm as the 280 case plus 4 grains loaded to 270 pressures.

I haven't got my hands on the original S&H 7x61 case (not the super) but I'll bet it is close to the AI's capacity and we all know the 7mmSAUM is. Good reason--it is a good place to be.

If you think I am a velocity crazy, think of it this way. What if "they" by some inane logic, decided the 270 should run at lower pressure?

270 sluts would be baying like a pack of hounds.

FWIW Bobbin, I think the trajectory advantage of larger cases will continue to be overlooked as long as we have smaller cases loaded to higher pressures in the same caliber, and guys continue to equate the cartridge diameter with killing performance rather than bullet design.

I haven't checked any factory loaded 270s in a while, but a few years ago it was not uncommon to get speeds in the 2700-2850 fps range with 130 grain factory loads, including the major manufacturers.

Bob,

I've owned/shot the 280 AI and RCBS since the mid 70's, that said,

I have never read so much BS on a thread about the round.

I've come to the conclusion if you want an AI version of the 280 go buy a 270 Win.

Really? I thought that honor was only for the 280 and 7x57...:)

I've only clocked Federal in the 270 and they pretty much were on the money.

Call a lil shop called Jarrett Rifles.......ask for Kenny.

The .280 Remington and the 7MM Remington Mag. are great cartridges, In fact they are almost as good as the 30-06.

Yep, Kenny gets it and so do thousands of others like myself. What's not to like about sending 140's down range at 3200 fps, great case life, 4 in the belly and just plain coooool looking.

Someone said the 280AI was the finest case a guy could put in a std LA Remington.

Brilliant guy......grin

Brilliant maybe.......but under schooled as well...

As for KJ's work, ahh I'll pass thx

Dober

Mighty glad to see you guys on this thread...was afraid the dark side had taken control...:)

I have both a 280 Imp and a 7 Mag.

I had the 280 Imp built a number of years ago because I liked the 7 Mag so well.

The 280 has a Krieger and the 7 Mag has a Hart.

Shooting a 140 grain bullet you will get the same velocity with the 280 Imp using 10 grains less powder.

If you are going the 7mm Rem Mag route instead of the 280 Ack then you might as well chamber your rifle for the 7MM STW and then you will see some improvement over the 280 Ack because the 7mm Rem Mag just doesn't have that much for the greater amount of powder it requires.

Not underschooled either, I don`t have a Jarrett......grin

he`d be a better splainer than me on the subject.

My Borden and Scott collection will suffice.......say least.