Re-chambering one of my 700 Rem ADL 270's

[SecretSquirrel38]

You can do a remage yourself. Call northland shooters supply. Taking the old barrel off will be the hardest part but if you are not saving the barrel it's not that bad.

Thanks but I am not doing that job. Certain things are better left to professionals. May have the barrel sold so I don't want to mess it up.

 

[cajun]

Thanks but I am not doing that job. Certain things are better left to professionals. May have the barrel sold so I don't want to mess it up.

It's not difficult. If you have any common sense or mechanical aptitude it's easy. You can also save some money. Buying a blank plus paying a gunsmith for chambering unless he's real cheap you will come out ahead.

 

[K.E.C. Darkside]

Mostly deer and coyote out to 500 yards. My longest shot has been at a yote at 401 yards and 358 yards deer with the 270 24" barrel. I have a 243 at my disposal and over 350 pieces of brass and bullets to load up for it.

25-06.

 

[Idaho Lefty]

Thanks but I am not doing that job. Certain things are better left to professionals. May have the barrel sold so I don't want to mess it up.

Criterion Barrels ARE, way Up there, in Accuracy !
Might want to, call around and see what kind of, Prices that, a Good / reliable Gunsmith charges to, Remove Your old Barrel and Head Space, a New Criterion Barrel on your action.
Call Jim at, Northland SS for, His idea's on, the subject or, If, he knows someone who can, Do the Work, for you.
I did my Own RemAge barrel, on a New Rem 700, SS receiver, in 6 XC ,..But, I was, a Gunsmith and chambered Rifles for, 20+ years.
Agree with, Secret Squirrel, If, NOT Mechanical or, very Familiar with THIS,.. just PAY someone else to Do, the work !
PS; the .280 Rem. and the .280 Ackley imp. ( Better, YET ! ) is, a FINE choice, in a Cartridge and, the 7MM Bullet HAS, Nice, High, BC's !!

 

[Idaho Lefty]

Thanks but I am not doing that job. Certain things are better left to professionals. May have the barrel sold so I don't want to mess it up.

Here's a Guy that KNOWS, his "Limitation's",. Congrat's for, admitting, it !
And,. Don't let anybody, talk you Out of the .280 Ack imp !
And, If ever going for, Elk / Moose,. you Will HAVE,.. Enough Gun

 

[SecretSquirrel38]

25-06.

Thought about. The open terrain where I hunt will cause it to move around too much with the wind. No one has ever harvested anything with less than a 270 win in the field. 1 mile x .5 mile. 280AI give me the velocity and energy close to a 7mm Mag with less the powder with a wider bullet selection.

 

[SecretSquirrel38]

Criterion Barrels ARE, way Up there, in Accuracy !
Might want to, call around and see what kind of, Prices that, a Good / reliable Gunsmith charges to, Remove Your old Barrel and Head Space, a New Criterion Barrel on your action.
Call Jim at, Northland SS for, His idea's on, the subject or, If, he knows someone who can, Do the Work, for you.
I did my Own RemAge barrel, on a New Rem 700, SS receiver, in 6 XC ,..But, I was, a Gunsmith and chambered Rifles for, 20+ years.
Agree with, Secret Squirrel, If, NOT Mechanical or, very Familiar with THIS,.. just PAY someone else to Do, the work !
PS; the .280 Rem. and the .280 Ackley imp. ( Better, YET ! ) is, a FINE choice, in a Cartridge and, the 7MM Bullet HAS, Nice, High, BC's !!

Thank you. I will give Jim a call on Thursday or Friday. My gunsmith quoted me $250 for everything. That included truing up the action and test firing. I have to bring a box of factory loads. I also have to bring 4-5 dummy rounds for when I drop it off the barrel removal before I order any barrel. Pricing out the Criterion now.

 

[BEEMAN]

Thought about. The open terrain where I hunt will cause it to move around too much with the wind. No one has ever harvested anything with less than a 270 win in the field. 1 mile x .5 mile. 280AI give me the velocity and energy close to a 7mm Mag with less the powder with a wider bullet selection.

Run some numbers with the 131-135 gr 25 caliber bullets. I think you'll be surprised. A 25-06 AI with a fast twist barrel would be great at the distances you mentioned. My 25-284 shooting the 131 BJ is impressive in the wind. As was mentioned earlier, be sure you get the right twist.

 

[ducky]

Appreciate the suggestion. I shoot the 130gr GameKing out of my 270 over 44.9grs of IMR4350 with the 24" barrel that gets sub .5 MOA groups at 100 yards....To me there is too much wind for a lighter/smaller bullet

First off, I think you're about 10 grains light on your powder charge. If you're shooting 130s pushed by 44.9 grains in your .270 Win, all I can say is no wonder you're looking for a .280 AI.

I'll second what @BEEMAN said about running numbers. A 6mm 103 gr and a .277 145 gr ELDX at 2900 fps will not drift enough in the wind a 500 yards that you'll be able to tell the difference. There is only .2 MOA difference in wind and trajectory, but it does favor the .270 Win. The heavier bullet does carry 400 ft-lbs more energy.

 

[Idaho Lefty]

Thank you. I will give Jim a call on Thursday or Friday. My gunsmith quoted me $250 for everything. That included truing up the action and test firing. I have to bring a box of factory loads. I also have to bring 4-5 dummy rounds for when I drop it off the barrel removal before I order any barrel. Pricing out the Criterion now.

I used, 2 NEW, Norma Brass cartridge CASINGS ( Un-Fired / un-sized 6 XC casings ) and, a "Go Gage" to set, my Headspace.
I made sure that, the Bolt closed on, the 2 Casings and that, the Bolt closed, very TIGHTLY on, the Go gage,. the Rifle Group's, in the 2's and 3's and I have, NO,. Brass Stretch ! To disassemble your Rifle, Remove Barrel, install and Headspace New Barrel,.. $250 sound's Reasonable @ Today's Prices.
Why the "Dummy Rounds" ?? they should Be, Factory Ammo or Factory Brass IMO (as Reloaded ammo can Be, Out of Spec and cause, issues ).
Dummy rounds are usually used when, a Gunsmith Reams / Chambers the Barrel and used to See, IF, the Free Bore is, Okay
The Barrel will Be Pre-Chambered By Northland and the Headspace will be, checked / SET,.. by the Gunsmith

 

[SecretSquirrel38]

First off, I think you're about 10 grains light on your powder charge. If you're shooting 130s pushed by 44.9 grains in your .270 Win, all I can say is no wonder you're looking for a .280 AI.

I'll second what @BEEMAN said about running numbers. A 6mm 103 gr and a .277 145 gr ELDX at 2900 fps will not drift enough in the wind a 500 yards that you'll be able to tell the difference. There is only .2 MOA difference in wind and trajectory, but it does favor the .270 Win. The heavier bullet does carry 400 ft-lbs more energy.

Correction I am running 55grs of IMR4350. I just checked my book and my post.

270 Win Found My Recipe

Shot my 270 Remington 700 ADL with 24 inch barrel at the range today and found my recipe. I am going to run 20 and make sure it's repeatable and make scope adjustments. 130 gr Sierra SBT Gameking 55 gr IMR4350 (max load) Federal 210 primer Remington brass That's a three shot group at 100...

www.longrangehunting.com

 

[ducky]

Thank you. I will give Jim a call on Thursday or Friday. My gunsmith quoted me $250 for everything. That included truing up the action and test firing.

$250 is what my GS charges just to blueprint a M700 action $350+ parts if he installs a Sako or M16 extractor. It's another $150 to install a pre-fit barrel, or $450 to thread, chamber, crown, and muzzle thread a customer supplied barrel blank.

My guess is you'll still be looking at $700 +/- to rebarrel your rifle. A NSS Criterion barrel for a M700 will run $440 plus shipping from NSS. The barrel is $335, barrel nut $30, and muzzle threads $75. Add in shipping costs and gunsmith install and that's how I came to $700.

Outlier right now has the cheapest pre-fit barrels shipped. I don't know who makes their barrels, and I don't know anyone using one. They don't offer .280 AI only 7mm-08, 7mm RM, and 7 PRC, and only offer two contours MTU and Full Bull. So you would probably be looking for a new rifle stock if you use them. If you bought the 7-08 you could rechamber to .280 AI, but ruins the affordability of the barrel.

Shaw will be the cheapest route for a new barrel installed if you use their service. As long as you're willing to wait 3-4+ months to get your rifle back. However, it'll only save maybe $100 over a NSS pre-fit installed by your GS.

 

[Wild Monkey]

I have 2 Remington 700 ADL's in 270 Win. One with a 24" barrel and the other with a 22". I am going to re-chamber the shorter barreled rifle to 280 AI to match the type of deer and coyote hunting I do. I don't want to spend more than $400 to do it. From what I have read I just need to get a new barrel because both rounds are wildcats from the 30-06 and everything will fit/work changing from 270-280. Other rifles I have are 30-06, 308 and 300 Win Mag. I was thinking about 25-06 or 35 Whelen, but have decided on the 280 for what I do and where I hunt. The 35 Whelen is a great round but I don't want to have to get another suppressor for one gun. Last night I saw someone post about a company that I can get a barrel for like $250-$350 but I can't for the life of me find it this morning. Any help would be appreciated.

I barreled my 700 myself. It's really easy, and I used a new take-off barrel to do it. I just bought the tools needed and used the vice I have mounted on my bench. It's the least expensive choice.
That being said, I don't recommend what you are doing. In my unqualified opinion, your 270 rifle is better left as is and I'd recommend buying a new rifle. Since you are dead set on the 280 Ackley Improved, plenty of off-the-shelf Rifles offer this chamber.

Honestly, I'm very disappointed in the quality of the Remington 700 Rifles. It gets a lot of hoopla, but the extractor is flimsy and weak. There are far better Rifles out there to choose from. The 700 was a great Rifle when it came out 60-plus years ago because it was accurate and cheap, and I mean cheap.
I am a fan of the 7mm, but in 2025, I would consider the 7mm-6.5mm Weatherby RPM if you insist on a re-barrel. If purchasing new, then a new 7mm offering is the ticket like 7-PRC or 28 Nosler or even a Sherman offering in a custom rig. The 6.5-06 Improved wildcats or 6.5mm RPM shooting the heavies can do the job, but it's whatever motivates you, it's your Hunt.

 

[FEENIX]

25-06.

Thought about. The open terrain where I hunt will cause it to move around too much with the wind.

That depends on your bullet selection and load. The Berger 133(G7 = .315)/135(G7 = .334), Hornady 134 ELD-M (G7 = .325)/138 A-Tip (G7 = .350), and 145 Black Holes (G7=.371) are no slouch. And if you need heavier than 145s, there's Chinchaga 163s.